ENTOMOLOGICAL SOCIETY

86 ENTOMOLOGICAL SOCIETY

MISCELLANEOUS

INSECTS. I also exhibit a

number

of alcoholic_speci-

mens

of the larva and _pupa, as also a

mounted imago

^{of the brilliant}

black, green and ^rust-red Lepidopteron,

Eumenia

atala Poey, recently collectedby Mr. Schwarz^atCocoanut Grove,Fla.,on

Zamia

integrifolia.

The

insect, onaccount ofits brilliancy and its bright reddish ^larva,has been _frequentlytreatedof. Ialsoexhibitanother Lepidopteron ^{a Noct-} uid received from Mr. Schwarz,viz., Cloaiithaderupta Morr.^{, the larva} ofwhich Mr. Schwarz found

upon Egg

plantⁱⁿ southeasternFlorida. It is interesting because of the great general resemblance whichthe larva bearstothatof

Laphygma

frugiperda.

Finally, ^I would present specimens ^{of a}

new

_genus, Dendrotettix, family Acrididce. ^I had reared the specieswhich formed the type of the genus

many

yearsago^{inMissouriinall its}stages, and propose^todescribe

it underthe_specific

name

of_quercus.

The

peculiarityof thegenus^isthat, as far as

we

_know,itisessentially tree-inhabiting.

Dr. Riley

^{also read the}

following paper

^:

FURTHER NOTES ON PHENGODES AND

ZARHIPIS.

ByDR.C.V.RILEY.

Iexhibitherewith

some

further larvae ofZarhipis and ^itsfemale.

As

compared^withPhengodes^thisZarhipis^larvais

somewhat more

_depressed,

more

parallel-sided, thethoracic_jointslessattenuated,andthe pro-thoracic joint ^is

more

particularly shorter and transverse.

When

immature the colorispale,with butlittlebrown,but

when

full

grown

^{thecolorbecomes} darker brown, ^{an'd the} _{general aspect,}

when

the larva is stretched and active, ^isonethat recalls the Myriapods

upon

^{which it feeds.}

The

dead and_dryspecimens convey^butapoor^{ideaof thereal} form, ^{as in life} the larvacan stretch to

more

than two inches in lengthandcrawls_easilyand rapidly.

The

structureof thehead isessentiallysimilarbutdiffersnotably in the followingparticulars^:

The

head itself is broader and

more

trans- verse, with the jaws ^broader and _apparently

more

_stronglyelbowed near base.

The

antennaehaveavery strongbulbusandare three-jointed, as in Phengodes; the nipple or terminal joint being stronger andthesecond jointbeing

more

oftenelbowed on thebasil, ^/. e., directed

more

outward;

thejoints are also

somewhat

stouterand shorter than inPhengodes. ^All the other trophi ^are similar to those of Phengodes,^{but broader} and shorter; the maxillary palpi diverging

more

_just as do the antennae.

Thereare a few very strong ^bristles around _{the head,} one near thefront and one_just behindtheantennas beingparticularly noticeable.

The

sur- face of thebody^is

somewhat more

_{distinctly shagreened} than in Phen- godes.

The

medio-dorsal depression the whole _length of the body^is stronger, andin the pale specimens ^the

brown

on the superior^surface leavesa similar medio-dorsal spot eachside this linenear the base of each joint,just as inthe palerspecimens ^of Phengodes.

I hadthegood^fortuneof seeing three of these ^larvaealivewhilein Cal-

OF WASHINGTON. 87

ifornia, ^lastApril.

One

^of

them

had been found December, 1885,by Mr.

A. Koebele,

who

had_keptitina jarof earthwithdeadleaves. Itdiedwhile I

was

there, inApril, 1887, having remained ^motionlessand withoutfood fornearly^fifteen months.

The

second

was

ⁱⁿMr.Rivers's possessionand had sheditslarval skin on _April 2, 1887. This Mr. Rivers kindlygave me, and ^itshed ^itsskin again April 18, anditis

more

particularly to this briefperiod ofabouttwoweeks thatIwishtocallattentionbecause itrep- resents astage ofdevelopment ^hitherto insufficiently characterized, and which

may

^{be likened tothe}pupa ^{state. It is in} reality a pseudo-pupal condition, the insect being ^{neither larva} nor

imago During

^{this brief} period^the colorispale, thereis no disposition^to move, and the mouth- parts are

more

softand undeveloped; ^thejointsofantennae and _palpi are lessdistinctlyformed and _shorter, while the jaws proper ^{are reduced to}

little

more

than useless tubercles.

The

_perfect, larviform female, after shedding ^thispseudo-pupal ^skin (which ^differs from the othershed skins inbeingpale and

more

_delicate),becomesdarker againandin general ap- pearance

much more

like thefull

grown

^{larvabeforeitenteredthe}pseudo- pupal condition.

The

colorinthe adult is uniformly dark

brown

above and

much

darkerbeneaththan in thelarva. In _short, the _perfectfemale

is

more

_stronglychitinizedthroughout, while the

mouth

_parts are also darkerandstronger, with

more

bristles,and themandibles

more

_distinctly elbowed and _longer.

The

thirdspecimen wasgiven ^to

me

_byMrs. A. E.

Bush, ^ofSan_Jose,and.though^notfullygrown,^diedandbecame shrunken and _rigidwithin a

week

intheboxof dry earthⁱⁿwhichIcarried itwhile travelling.

The

second _specimen, from Mr. Rivers, was _placed in a large jar with earthand_placedwherethemale might ^{reach it,} and on_{April 25}had at- tractedamale. Shesubsequently ^laid eggs. These are spherical, 1.8-2

mm.

indiameter,withoccasionallyan_irregularimpression no doubt^caused by^external pressure. Color yellowish-white

when

fresh, turning grad- ually^to,dirtyyellow. Tolerablyshining and with nosculpture ^visible.

JULY

7, 1887.

Seven _persons

_present. President

Howard

in thechair.

Dr. Riley

^{exhibited various}

specimens, and made

the following

remarks upon them

^:

NOTES ON THE EVERSIBLE GLANDS

^IN

LARVAE OF ORGYIA AND

PAR- ORGYIA,

WITH NOTES ON ^THE SYNONYMY

OF SPECIES. Dr. A. S Pack- ard has called attention

(Am. Nat,

^1886, page 314) ^to the fact that the twocoral-redtubercles on the back of_joints9and 10 in thelarvaofOr- gyialeucostigmaare in reality eversibleglands, similar^{to that}previously found by Mr. ^E.R. Poulton_(Trans. Ent. _Soc., Lond., 1886, page16) on the loth_jointof the

European

Orgyia pudibunda.