SOME LISTS OF ODONATA COLLECTED IN NEVADA AND CENTRAL CALIFORNIA DURING 1913 AND 1914

578 PROCEEDINGS? OF THE NATIONAL MUSEUM

17. SOME LISTS OF ODONATA COLLECTED IN NEVADA AND CENTRAL CALIFORNIA DURING 1913 AND 1914

592 PROCEEDINGS OF THE NATIONAL MUSEUM.

vol.52.

These

nymphal

sldnswerecollectedJanuary6, 1915, onthe roots and trunks of alder trees overhanging Los Trancos Creek where theyhad been probablysincethe preceding August,

17.

SOME

LISTS

OF ODONATA COLLECTED

IN

NEVADA AND CENTRAL

NO.2192.

DRAGONFLIES, CALIFORNIA AND NEVADA— KENNEDY. 593

yonsfrom 1,000 to 3,000feetdeep. This westslopeisadryregion, exceptinthebottomsofthecanyons,andhasafamiasimilar tothat of the Coast Kanges, but at an elevation of about 4,000 feet this beginstogive placetothe purelyCanadian faunaofthecrest of the range. Here,at elevations of 6,000to 10,000 feet,are found

many

specieswhichflourish at sealevelinBritishColumbia, Itisin this Sierra region that several ofthese species reachtheirsouthernmost ranges.

The

entirenorthern third of the State is unexploredas far as its dragonflies areconcerned.

The

southeastern partoftheStatehas a faunawhichresembles thatoftheinterior valleys,butismorestrongly Mexican.

PALO ALTO, SANTA CLARA COUNTY, CALIFORNLA.

Palo Alto andStanford Universityaresituated on theflatat the southernend of SanFrancisco Bay. This is a plaindotted

by

the richgreenofnumerous low, round-topped liveoaks and, except for artificial reservoirs, is dry from April to

December

of each year.

Five miles westoftheUniversity therollhigdarkgreenslopes ofthe Coast

Range

riseto analtitude of2,000feet. Thesearecovered

by

conifersontheir westslopesand inthe deepmoist canyons, buton theirdriereasternsidetheredwoodsandfirsgive placetoscruboaks, laurels, and dense brush.

Numerous

perennial torrents rush

down

throughtheheavyshadeofthealders inthenarrow windinggorgesof thesemountains tosinkintothesandof theirdrybedsinthe lower foothills,ortobe

dammed up

andled

away

in irrigation pipes. Hid- den

away

onthehighslopes ofthemountainsarevarious_spring-fed

dams made

towaterstock,which havea

more

abundant dragonfly faunathantheponds oftheflatbelow. Sucharethe

"Mud Lakes"

ofStanford students, whichlie at anelevationof 1,400 feeton the ridge betweenCortede

Madero

and Los TrancosCreeks.

1.ARCHILESTES CALIFORNICAMcLachlan.

Many

specimensintheStanfordcollection. Probably onalllarge ponds in the fall. I have not collected about Stanford at this season.

2.LESTESCONGENERHagen.

Occasionalon allponds,

3.LESTESDISJUNCTUSSelys.

On

themountain ponds. Specimens fromthe Coast

Range

have the pterostigmasblack, thehumeralstripeblueandlittleornoblack on or posterior to the second lateral suture.

The

appendages are identicalwitheastern disjunctus}

1Specimens from theLake Tahoeregionhaveabroadstripeonthesecondlateralsuture. Specimens fromWashington and Oregonare asblackonthesides asthosefrom the EasternStates. One Oregon malehas the thoraxentirelyblack.

65008°—Proc.N.M.vol.52—17 38

594 PROCEEDINGS OF THE NATIONAL

MZ'SEUM. vol.52.

4.LESTESSTULTUSHagen.

Very abundant on the

"Mud

Lakes"; emerging during June (see page484).

5.LESTESUNGUICULATUSHagen.

Occasional onthe mountainponds.

G.ARGIA VIVTOAHagen.

Common

aboutallperennialsprings.

7.ENALLAGMACALVERTIMorse.

Occasional on Felt

Pond

during

May

and June, also on

"Mud

Lakes."

8.ENALLAGMA CARUNCULATUMMorse.

Common

onallpondsandstreams except themountaintorrents.

9.ENALLAGMA CYATHIGERUM(Charpentler).

Common

onallstreams and ponds except the mountain torrents.

10.ENALLAGMA PRAEVARUM (Hagen).

Occasionalon alllowlandstreams and ponds.

Common

at

"Mud

Lakes."

11.TELEBASISSALVA (Hagen).

Occasional aboutponds.

12.ZONIAGRION EXCLAMATIONIS(Selys).

Common

intheoutlet to SearsvilleLake. Occasionalonponds.

13.ISCHNURA CERVULASelys.

Common

on all ponds.

The

females colored like the males are

common

in this locality.

The

femalesareverydefinitely dicliromatic.

14.ISCHNURAERRATICACalvert.

Occasional about ponds. Most often taken on the westernmost ofthe

"Mud

Lakes."

)5.ISCHNURA PERPARVASelys.

Common

about allponds andstagnant streams.

The

localmales havelessyellowonthe

abdomen

thanOregonand Washingtonmales.

16.CELAENURADENTICOLLIS(Burmeister).

Occasionalonponds.

17.CELAENURA GEMINAKennedy.

One

male, Sharon Pond.

18.CORDULEGASTER DORSALISHagen.

On

^allperennialmountain torrents (see p.515).

19.GOMPHUSSOBRINUSSelys.

A

stray female

was

takenonFelt

Pond

inApril,1914(seep. 558).

20.OCTOGOMPHUSSPECULARIS(Hagen).

On

all perennialmountain torrents (see p. 574).

21.ANAXJUNIUS(Drury).

Occasionalonthelargerponds.

22.AESHNA CALIFORNICACalvert.

Common

about ponds fromApriltillJuly.

23.AESHNA MULTICOLORHagen.

Common

from

May

toSeptember.

NO.2192.

DRAG0NFLTE8, CALIFORNIA AND NEVADA— KENNEDY. 595

24.AESHNA WALKERIKennedy.

Co

mm

on on San Francisqiiito and other creeks from Augustto November.

25.LIBELLULAFORENSISHagen.

Common

onpondsandstagnant streams.

26.LIBELLULAPULCHELLADrury.

Occasionalonponds.

27.LIBELLULASATURATAUhler.

Common

onallponds.

28.PLATHEMISLYDIA (Drury).

Common

onallponds.

29.ERYTHEMISSIMPLICICOLLIS(Say).

Common

onallponds.

30.SYMPETRUM CORRUPTUM(Hagen).

Common

on ponds. This is on the wing from the latterpart of FebruarytiUDecember.

31.SYMPETRUMILLOTUM(Hagen).

The

most

common

Sympetrum. This has also a long season,

March

tillNovember.

32.SYMPETRUMMADIDUM(Hagen).

Common

on themountain ponds,emergingin June.

33.PACHYDIPLAX LONGIPENNIS(Burmeister).

On

FeltPond.

34.TRAMEALACERATAHagen.

On

Sharen Pond.

STEVENS CREEK, SANTA CLARA COUNTY, CALIFORNIA.

The

upper10miles ofthiscreekisaclear,swiftmomitainstream.

During the rainy season it empties into

San

Francisco Bay, but from Jmie to

December

there is no water in its lower

more

^level

course. It comes

down

through a narrow gorge, and is heavily shaded

by

alders andbaytrees.

1.ARGIA VIVIDAHagen.

Occasional aboutsprings along thelower courseof thecreek.

2.CORDULEGASTERDORSALISHagen.

Common

ontheswiftupperend ofthe creek (see p. 515).

3.OPHIOGOMPHUSBISONSelys.

One

specimen

was

^seennear theTrout Farm.

4.OCTOGOMPHUSSPECULARIS(Hagen).

Common

ontheswiftupperendofthecreek.

5.AESHNA PALMATAHagen.

One

female was taken in Augustnear Soda Spring. This is the farthestsouthwest recordforthespecies.

6.AESHNA WALKERIKennedy.

Common

along the creek (see p.586).

7.SYMPETRUMILLOTUM(Hagen).

Two

seenbelowtheTrout Farm.

596 PROCEEDINGS OF THE NATIONAL MUSEUM.

^{vol. 52.}

SANJOSE, SANTA CLARA COUNTY, CALIFORNLA.

SanJoseison the flat land at the extreme southern endof

San

Francisco Bay.

The

collecting

was

done along Coyote Creek, a sluggish

mud-banked

stream flowing throughthecity.

1.HETAERINA AMERICANA(Fabricins).

Four specimenstaken

May

16, 1914.

2.ARCHILESTES CALIFORNICAMcLachlan.

Nymphs common. Have

not collected at this place later than July4.

3.HYPONEURA LUGENSHagen.

One

specimen taken.

Not common.

4.ARGIA AGRIOIDESCalvert.

Abundant

during July

when

streamis most stagnant.

5.ARGIA VIVIDAHagen.

Not common.

6.ENALLAGMACARUNCULATUMMorse.

Common.

7.ENALLAGMA CYATHIGERUM(Charpentier).

Common.

8.ENALLAGMA PRAEVARUM (Hagen),

Not common.

9.TELEBASIS SALVA (Hagen).

Common.

10. ZONIAGRION EXCLAMATIONIS (Selys).

Occasional during

May

andJune.

11.ISCHNURA CERVULA Selys.

Abundant.

12.ISCHNURA PERPARVASelys.

Common.

13.CELAENURADENTICOLLIS(Burmeister).

Occasional.

14.CELAENURA GEMINA Kennedy.

Pairincopulation.

15.PROGOMPHUSBOREALIS McLachlan.

Two

seen.

16.GOMPHUSSOBRINUSSelys.

Very abundant during

May,

1914; none seen during May, 1915;

thisprobablydueto late rains(see p. 530)

.

17.ANAXJUNIUS (Drury).

. Occasional.

18.AESHNA CALIFORNICA Calvert.

Abundant

during

May.

19.AESHNA MULTICOLORHagen.

Abundant

duringsummer.

%

NO.2192.

DRAGONPLTES, CALIFORNIA AND NEVADA— KENNEDY. 597

20.MACROMIA MAGNIFICAMcLachlan.

Abundant

during

May,

1914. These emerged in numbers, the exuviae being

common

in thegrassrootstwo feetabovethestream.

In 1914 theemergence took place before

May

10.

Few

wereseenin 1915.

21.LIBELLULASATURATA Uhler.

Common.

22.PLATHEMIS LYDIA (Drury).

Common.

23.ERYTHEMISSIMPLICICOLLIS (Say),

Common.

24.SYMPETRUM CORRUPTUM (Hagen),

Occasional.

25.SYMPETRUMILLOTUM (Hagen).

Common.

SANLORENZORIVER, SANTA CRUZ,CALIFORNIA.

This is astream less than 20 miles long, which flows

down

the heavily timbered west slope of the Coast

Range

and empties into Monterey

Bay

at the town of Santa Cruz. I collected on Zyante Creek, whereI

saw

no imagoes but foimdevery stream-sidetreeand logcoveredwiththe exuviaeofOctogompJiusand Cordulegaster.

The

adultsof thesehadevidentlymigratedfartherupstream.

The

other species were taken onthe San Lorenzo in therockygorge between Big Trees and Rincon, the best collecting being in the vicinity of Rincon. Probably the best collecting in the San Lorenzo is in the open vaUey towards Felton, above Big Trees, which part of the streamIdid notvisit.

1.HETAERINA AMERICANA(Fabricius).

Common

below BigTrees.

2.ARGIA

EMMA

Kennedy.

Common

from BigTreestoRincon.

3.ARGIA VIVIDA Hagen.

Occasionalbelow BigTrees.

4.ENALLAGMA CARUNCULATUM Morse.

Occasionalbelow BigTrees.

5.ENALLAGMA CYATHIGERUM (CharpenHer).

Common

below BigTrees.

6.ENALLAGMA PRAEVARUM(Hagen).

Occasionalbelow BigTrees.

7. ZONIAGRION EXCLAMATIONIS(Selys).

Common

below BigTrees.

8.CORDULEGASTERDORSALISHagen.

Exuviaeveryabimdant on middle reaches of Zyante Creek.

No

imagoes seen at all and noexuviaefound below the swiftwater in the Zyante.

The

imagoes

had

emerged and evidently migrated farther

up

thecreek.

598 PROCEEDINGS OF THE NATIONAL MUHEUM.

vol.52.

9.OPHIOGOMPHUS BISONSelys.

Two

specimensweretakenonasmall gravel barintheSan Lorenzo atBigTrees,where twoexuviaewere fomid on the baseof analder overhanging thestream.

Two

otherimagoes were takenon ariffle at the Rincon powderworks. These catches areinterestmgin that thisspecies

had

been

known

onlyfrom afemale, thetype,which, de- positedintheMcLachlancollection,

was

labeled

"from

Santa Cruz, Cahfornia." Probablythe type

had

been takenon theSan Lorenzo River.

10.OCTOGOMPHUS SPECULARIS(Hagen).

The

exuviae of this specieswere abundant withthe Cordulegaster exuviae onthemiddle reachesofZyanteCreek, but none wereseen belowthisand no imagoes wereseen.

11.AESHNA CALIFORNICA Calvert.

Severalwereseen aboveRincon.

12.AESHNA MULTICOLORHagen.

Severalseen along therailroadaboveRincon.

LOSGATOS RIVER,SANTA CLARA COUNTY, CALIFORNLA.

Excepting for Argia vivida

Hagen

and a few Cordulegaster and OctogompTius on its headwaters, this stream is practically without Odonata. Thisisbecauseoftheverydenseshadeontheupperpart of thestream, and thefact thatso

much

wateris

removed by

irri- gation and for the town ofLos Gatos that in any ordinary season theriverisentirelydryinitsopenportionbelowLosGatos.

From

June6 to 9 I collected at points onthe

Napa

River. This small river,lying entirely in

Napa

County, drains a shallow valley onthenorthside of SanFrancisco Bay. Thisvalley,lyingjust east of the

main

rangeof the Coast Mountains, is ratlier dry so thatit

resembles the Sacramento Valley.

At

Napa, wherethe first collec- tions were made, theriver is a tide stream and gave no Odonata.

At

Calistoga, the only other ])lace examined, the river

was

also without Odonata.

NAPA, NAPACOUNTY, CALIFORNIA.

The

collecting at

Napa was

done on the extensive estate of the Insane Hospital.

A

small, clear mountain stream, which comes

down

through a deep

ravme

east ofthe asylum, is ledinto aseries ofponds andreservoirs. These

swarm

with Odonata.

1.ARCfflLESTES CALIFORNICAMcLachlan.

The

shallows aboutthe

main pond swarmed

with the

nymphs

of this.

One

teneral

was

taken.

2.LESTES,species.

Thisspecies

was common

on thepond.

3.ARGLA VIVIDAHagen.

Common

along the lowerhalf ofthe stream.

NO.2192.

DRAGONFLIES, CALIFORNIA AND NEVADA— KENNEDY. 599

4.ENALLAGMA CARUNCULATUMMorse.

On

the''FirePond."

5.ENALLAGMA CYATHIGERUM(Charpenticr).

Common

onstreamsandallponds.

6.ISCHNURA CERVULASelys.

On

''FirePond."

7.ISCHNURA PERPARVASelys.

On

^allponds.

8.CELAENURADENTICOLLIS(Burnieister).

On

"FirePond."

9.CORDULEGASTERDORSALISHagen.

On

the mountain stream, where both imagoes and exuviaewere collected.

10.GOMPHUSSOBRINUSSelys.

Severalwere caughtonthelargestpond,

11.OCTOGOMPHUSSPECULARIS(Hagen).

Common

onthestreamwhereseveralweretaken while seated on rocksor foliage inthesunnyopenings.

12.ANAXJUNIUS(Drury).

A

singlefemalecaughton oneofthe ponds.

13.AESHNACALIFORNICACalvert.

Abundant

aboutthe ponds,

14.AESHNA MULTICOLORHagen.

Common.

15.MACROMIAMAGNIFICAMcLachlan.

One

male caught on the largest pond. This was the only indi- vidualof thisspecies seen.

16.TETRAGONEURIACANISMcLachlan

These werevery abundant onthe largestponds. Thisistheonly place in thewest at which I have taken this species though ithas beenrecordedfrom the StateofWashington.

^

The

individuals flew slowly and dodged awkwardly and always stayed in loosely organizedflocks, the individuals in which flew in short (40 feet) frequently changed beats. During

windy

weather theyflew ina protected ravine opening onto the

pond

and at such tinier flew close to the ground so that they were easily caught.

Early in the morning (9 o'clock)

many

spent

much

of their time perchedon lowbushes.

When

thewind

was down

theyflewabove the tree tops. Theseflockswere composed ofmales and femalesin about equal numbers and aU. were intent on catching the various minute insectsfilling theair. While

many

flew over thesurface of the watertheir presence there appearedto befor food rather than aflight ofthe males hunting ovipositingfemales. During the two dayscollecting I

saw

nofemalesovipositing and nopairs incopula- tion.

However

the gelatinousstrings of eggswere abimdant inthe

1Muttkowski, CatalogueoftheOdonataofNorthAmerica,p. 125.

600 PROCEEDINGS OF THE NATIONAL MUSEUM.

vol.52.

Potamogeton in the edge of the pond. I collected about eighty individualswhichseemed toreduce the abundanceathird orahalf.

Several exuviae were found clinging to stones about 4 feet above the water. These Ihavemisplaced or lost.

In life the eyes of the male were bright green above and gray below; those of thefemalelessgreen above

and

gray below.

17.LIBELLULAFORENSISHagen.

On

the"FirePond."

18.LIBELLULASATURATA Uhler.

On

allponds.

19.PLATHEMISLYDLA(Driiry).

On

the small"FirePond."

20.ERYTHEMISSIMPLICICOLLIS(Say).

On

the"FirePond."

21.SYMPETRUM CORRUPTUM(Hagen).

On

allponds.

22.SYMPETRUMILLOTUM(Hagen).

On

thelargestpond.

23.SYMPETRUMPALLIPES(Hagen).

Occasional.

CALISTOGA, NAPA COUNTY,CALIFORNIA.

The Napa

River at this point is a small, sluggish stream and seemed to

contam

no Odonata.

The

collecting

was

done in the streamsfrom agroupof

warm

springsinthefieldseast ofthe town.

Severalacres offlatlandatthefoot ofthelowhillsontheeast side of thenarrowvalleyfairlyoozed

warm

water.

The

largerspringswere sohotthatthey containednolife. Ditches

had

beendugin different directionsthrough thisboggyareafor dramage. Inthese thewater variedfrom tepid to coolandsupported variousspecies ofOdonata.

Several days of rain

had

very evidently reduced the collecting at thispoint.

1.ENALLAGMA CYATHIGERUM(Charpentier).

Occasional.

2.ENALLAGMA CARUNCULATUMMorse.

3.ISCHNURA CERVULASelys.

Occasional about the coolerwater.

4.ISCHNURA PERPARVASelys.

Common.

5.CELAENURADENTICOLLIS(Burmeister).

The

most abundantspecies. Forhabitsseepage500.

6.AESHNACALIFORNICACalvert.

Seen.

7.AESHNA MULTICOLORHagen.

Severalseen.

One

taken.

8.LIBELLULAFORENSIS Hagen.

Occasional.

NO.2192.

DRAQ0NFLIE8,

CATAFORNIA

AND NEVADA— KENNEDY. 601

9.LIBELLULASATURATA Uhler.

Common. Many

femalesofthisspecieswere found deadinthehot stream flowingfromthelargestspring. Perhaps they

had

tried to oviposit here, as theotherstreamswere badlyovergrownwith vege- tation.

10.PLATHEMIS LYDIA (Drury).

Common.

11.ERYTHEMISSIMPLICICOLLIS (Say).

Abundant.

12.SYMPETRUM CORRUPTUM (Hagen).

Occasional.

13.SYMPETRUMILLOTUM (Hagen).

Common.

COLUSA, COLUSA COUNTY, CALFPORNIA.

From

the

Napa

Valley I traveled

up

the Sacramento to Colusa, where I collected on eJune 11. This town is on the banks of the Sacramento, which is a navigable stream at this point.

The

bot- tomshereare

many

mileswide andbeing lowerthanthefloodstage of the river, are traversed in various directions

by

dykes. These break

up

the natural drainage so that waste irrigating water has producednumerous

more

orlesspermanentsloughs.

1.HETAERINA AMERICANA (Fabricius).

Common among

the willowsfringingtheriver.

2.LESTESCONGENER Hagen.

Very abundant ontheslough westoftown.

3.ARGIA

EMMA

Kennedy.

Abundant

on the banks of the river.

The

majority of the indi- vidualsweretenerals.

4.ENALLAGMA CARUNCULATUM Morse.

Common

onthesloughs.

5.ZONIAGRION EXCLAMATIONIS (Selys).

Two

males and onefemaleon the riverbank.

Not

abundant.

6.ISCHNURACERVULA Selys.

Common

onthesloughs.

7.ISCHNURA PERPARVA Selys.

Common

onthesloughs.

8.CELAENURA DENTICOLLIS(Burmeister).

The

most abundantspeciesonthesloughs.

9.OPHIOGOMPHUSOCCIDENTIS CALIFORNICUS Kennedy.

Two

males of this pale variety of occidentis were taken on the sandy

bank

of the river opposite the town. Exuviae were very abundant

among

the willows alongtheriver (seep. 547).

10.AESHNA MULTICOLOR Hagen.

Common

aboutthesloughs.

11.LIBELLULAFORENSIS Hagen.

Common

onthesloughs.

602 PROCEEDINGS OF THE NATIONAL MUSEUM.

vol.52.

12.LIBELLULASATURATAUhler.

Occasional.

13.PLATHEMISLYDIA (Drury).

Common

about thesloughs.

14.ERYTHEMIS SIMPLICICOLLIS(Say).

Abundant

onthesloughs.

15.SYMPETRUM CORRUPTUM (Hagen).

Common

onthesloughs.

16.SYMPETRUM ILLOTTJM (Hagen).

Occasionalonthesloughs.

17.PACHYDIPLAX LONGIPENNIS (Burmeister).

One

male

was

takeninthe willows acrosstheriverfromColusa.

MARYSVILLE, YUBACOUNTY, CALIFORNIA.

Marysvilleisinthe greatSacramento Bottoms onthe

Yuba

River near its juncture with the Feather River. Marysville exists only throughthe protectionofitsgreatdykes. Hj^draulicminingonthe

Yuba

hasfilledthestreamsofull of tailingsthatitisbutashifting bed of white sand.

Where

at one time navigable, its bed is

now

above the level of the town of Mar3^sville and the streamis wide and veryshallow. This haskilled any

Odonata

faunait

may

have

had

atonetime.

The

fewspecies collectedweretakeninthe sloughs backofthedykes acrossthe bridgefromthecity.

1.LESTESSTULTUS Hagen.

Severaltaken(see p.484).

2.ENALLAGMA CARIJNCULATUM Morse.

Not common.

3.TELEBASIS SALVA (Hagen).

One

seen.

4.ISCHNURA CERVULASelys.

Common

; themost abundantspecies.

5.ISCHNURA PERPARVA Selys.

Common.

Orangeteneralfemalesabundant.

6.CELAENURA DENTICOLLIS (Burmeister).

The

secondmost abundantspecies.

7.AESHNA MULTICOLOR Hagen.

Severalseen.

8.LIBELLULA FORENSIS Hagen.

Several seenflyingwith thenext.

9.PLATHEMISLYDIA(Drury).

Abundant.

10.ERYTHEMISSIMPLICICOLLIS (Say).

Common.

11.SYMPETRUM CORRUPTUM (Hagen).

Very

common. The

most abundant large dragonfly. Emerging fromthe sloughsinlargenumbers.

NO.2192.

DRA00NFLIE8, CALIFORNIA AND NEVADA—KENNEDY. ₆₀₃

OEOVILLE, BUTTE COUNTY,CALIFORNIA.

OrovilleisontheFeather Riverwhereitemerges fromitscanyon in the Sierras. This is a barren, dry, hilly regionwherefarming is carried on

by

irrigation. It was on the irrigating and waste-water ditches acrosstheriverfromOrovillethatthe following_specieswere taken

:

1.HETAERINAAMERICANA(Fabricius).

On

irrigatingditch. Exuviae

common.

2.

ARGU

AGRIOroESCalvert.

Severaltakenonirrigatingstream.

3.ARGIA

EMMA

Kennedy.

One

maletakenon beachofFeatherRiver.

4.ARGIA VIVIDAHagen.

Abmidant

onaspringstreamletonside ofTable Moimtain.

5.ENALLAGMA CARUNCULATUMMorse.

Common.

G.ENALLAGMA CYATHIGERUM(Charpentier).

Occasionalonthewastestreamwestofthe

Odd

Fellows'

Home.

7.ISCHNURA PERPARVASelys.

Common.

8.CELAENURADENTICOLLIS(Burrneister).

Severalobservedwhich werejn-obablythis.

9.OPHIOGOMPHUSBISONSelys.

Two

malestaken.

10.OPHIOGOMPHUSOCCIDENTIS CALlFORNICUSKennedy.

One

maletaken.

11.ERPETOGOMPHUSCOMPOSITUSHagen.

One

female,ateneral,

was

takenontheirrigatmg ditch across the riverfromOroville. All thegomphines weretakenon or near this ditch.

As

thiswater

came

from a tributaryof theFeather River, probablythe

nymphs came down

in the water.

The

FeatherRiver washighand no Odonataexcept theArgia wereseenonitsbanks.

12.GOMPHUSSOBRINIISSelys.

One

maletaken.

13.ANAXJUNIUS(Drury).

A

^pairwere taken on the waste stream backof the

Odd

Fellows'

Home.

14.AESHNA MULTICOLORHagen.

Common.

15.MACROMLiMAGNIFICAMcLachlan.

Two

males andseveralexuviaeseen.

16.LIBELLULACOMANCHECalvert.

A

singlemale, the onlyspecimenIhaveever seenalive,was caught while seatedon thetopof a

weed

near the waste stream.

The

fol-