Proceedings of the Biological Society of Washington.

VOL._XVIII, PP.

207-210 SEPTEMBER

2, 1905

PROCEEDINGS

OFTHE

BIOLOGICAL SOCIETY OF WASHINGTON

DESCRIPTIONS OF SOME NEW GENERA OF TYRANNI-

,

PIPRID.E, AND COTINGID^E.

BY ROBERT RIDGWAY.

Bypermission^ofthe Secretary of the SmithsonianInstitution.

Aphanotriccus

gen. nov. (Tryannidte.)

Similarto Myiobius

Gray

^butoutermostprimaries longer(thetenth equal tofirstinsteadof

much

shorterthansecondaries, the ninth not shorterthan

fifth), rictal bristles weaker (notreachingto tip ofbill), tail

much

_longer thandistance from

bend

ofwing^to

end

ofdistalsecondaries,

and

without yellowoncrown nor rump.

Type,Myiobius capitalisSalvin

=

Aphanotriccus capilalis.

('A^a^s, unseen, obscure;rptKKos,asmall_bird.) Terenotriccus _{gen. nov.} (Tyrannidx.)

In form

somewhat

like Myiobius Gray, but second phalanx^ofmiddle toepartlyadherent to outer _toe,lateral toes relatively

much

_shorter,tail shorterthandistancefrom

bend

of

wing

^{to endofdistal}secondaries,

and

styleof coloration very ^different(under partsuniformcinnamon-buff,^tail rufous-buff,

and

no_yellow

on rump

^norcrown.)

Type,MyiobiusfulvigularisSalvin

and Godman.

(ffpevos, soft,delicate_;T/H'/CKOS,asmall_bird.)

Species: Terenotriccus fulvigularis (Salvin

and Godman),

Terenotriccus erythrurus(Cabanis).

Myiotriccus gen. nov. (Tryannidte.)

Similar to Aphanolriccus ⁱⁿ those structural characters

which

_separate the latter from _Myiobius,but outermost primaries longer (tenth equal ^to second or_third, ninth longerthan fifth or _sixth),tail

much

shorter than

wing

^to

end

ofdistalsecondaries, a yellow spoton crown

and rump

(as in Myiobius},

and

tailat leastpartly^rufous.

Type, TyrannulaphcenicuraSclater.

(Mvta, afly;rplicKos,asmall_bird.)

Species: Myiotriccus ornatus (Lafresnaye), Myiotriccus^stellatus (Cabanis), Myiotriccusphcenicurus(Sclater),Myiotriccusaureiventris _(Sclater).

39-PROC.BIOL.Soc. WASH., VOL. XVIII, ^1905. (207)

208 Ridgway New Genera

ofTyrannidas, Pipridas, Cotingidse.

Atalotriccus _{gen. nov.} (Tyrcmnidse.)

Similarto Colopteryx

Ridgway

(ex ColopterusCabanis, preoccupied),but head without crest,four,instead of_three,outer primaries greatlyreduced in size (thereduction excessive

and

the feathersvery narrow

and

acumi nate instead ofnormalinform),

and

bill

much

narrower.

Type, Colopterus pilarisCabanis

=

Atalolriccm_pilaris.

('AraX6s,tender,delicate;TPIKKOS,asmall _bird.)

Placostomus

_{gen. nov.} (Tyrannidse.}

SimilartoPlatyrinchus Desmarest,butlatero-frontalfeathers

and

feathers ofchin with conspicuous bristly tips; tarsi

and

toes

much more

_slender, the basal phalanx^of middle toe wholly ^{united to inner toe}, outermost (tenth)primaryrelatively

much

longer (longerthan fifth instead ofnot longerthan_second);tail

much

smaller(only aboutone-fourth, instead of nearlyone-half, aslong^aswing).

Type,PlatyrhynchussuperciliarisLawrence.

(nxd,

^{a broadsurface};<rr6^a,mouth.)

Species: Placostomus superciliaris (Lawrence), Placostomus coronatus (Sclater).

Cnemarchus

gen. nov. (Tyrannidse.}

*

Somewhat

^like Myiotheretes Reichenbach, but ^tarsus relatively

much

shorter

(much

^{lessthantwiceas}long^asthe_relativelyshortermiddle_toe, with_claw);clawofhallux not longerthanitsdigit^;

wing

only moderately lengthened, the longer primariesexceedingsecondaries

by much

lessthan twicethe_{length of}tarsus

and much

lessthanone-third (instead of nearly one-half) the^totallength of

wing

^;outermost (tenth)primary^shorterthan sixth (instead of equalling or exceedingninth)

and

not attenuated _{at tip;}

tail

more

than two-thirds as long ^aswing, even _(insteadof emarginate), extensively rufous^incolor;bristly tipsoflatero>frontalfeatherswelldevel oped,arched;billrelatively

much

smaller,theexposed

culmen

_{not longer} than outer_toe, withoutclaw;

rump

^{rufousbutnorufouson}remiges.

Type, Tseniopteraerythropygia^Sclater

=

Cnemarchuserythropygius.

s,slope ofa

mountain

; Apx^,ruler, chief.)

Orodynastes

gen. nov. (Tyrannidse.)

Agreeing with Cnemarchus^inallthe characters

which

separate the^latter fromMyiotheretes(except presence of rufous

rump ^and

^{absenceof rufouson}

remiges),butdiffering as follows^: Bill large

and

_strong,theexposed ^cul

men

_nearly as long^as middle toe,with claw; nostril

midway

^between

culmen and

commissure (instead of nearer ^to latter), broadly ^{oval or} roundish (instead ofwedge-shaped);tarsus

much

^lessthanone

and

a half times as long ^asmiddle _toe,withoutclaw;

rump

^not rufous,but_remiges extensively of that^color.

Type, TseniopterastriaticollisSclater

=

Orodynastesstriaticollis.

(*0pos,

mountain

;SVMKTT^S,asovereign orruler.)

Ridgway New Genera

_ofTyrannidss,Pipridae, Cotingidse..

209 Tyrannopsis

gen. nov. (Tyrannidse}

Similarto TyrannusCuvier,but_tipofoutermostprimaries not attenuate tailrelativelyshorter _(shorterthandistance from

bend

of

wing

^to

end

of secondaries),

and

nostril

much

nearertocommissure thantoculmen,^over

hung by

^avery broad

membrane.

_Differingfrom_MyiozetaBonaparte (to

which commonly

referred) in relatively

much

_larger

and

stouterbill,shorter

and more

roundedwing, shorter^tail,

and

shortertarsus (the lattershorter thanmiddle_toe,with _claw).

Type,MuscicapasulphuredSpix

=

Tyrannopsissulphureus.

(Tyrannus-f ft/as,appearance.)

Tolmarchus

_{gen. nov.} (Tyrannidse.}

Similaringeneralstructure to Pilangus Swairison,butbill broader

and more

_{depressed (its}widthat posteriorend of nostril equal ^to

more

than halfthe distance from nostril to tipof maxilla

and

one

and

a half times

itsdepth^at

same

_{point),longergonys} (very nearly^to

more

thantwiceas long^asmandibular_{rami), longer}tail

(much more

^thanfour-fifthsaslong aswing),

much

longer tenth (outermost) primary (longerthan fourthin stead of equal ^to or shorterthanfirst),

more

_{exposednostrils,}

more

scant

and

conspicuouslybristly latero-frontal feathers,longer^rictal bristles,

and

very different style of coloration (under parts grayish white, instead of bright yellow,no whitesuperciliary stripe, etc.).

Type,Pitangustoylori Sclater.

(T6X/xa,bold,daring^;apx^,&_ruler,achief,or_leader.)

Species: Tolmarchus bahamensis (Bryant), Tolmarchus caudifasciatus (D'Orbigny), Tolmarchusjamaicensis (Chapman), Tolmarchuscaymanensis (Nicoll), Tolmarchusgabbi (Lawrence), Tolmarchustaylori (Sclater).

Phaeotriccus _{gen. nov. (}Tyrannidse.}

Apparently^nearesttoKnipolegusBoie,but_differingconspicuously (from allothergenera^ofTyrannidsealso) intheformofthe wing,whichhas the primaries

and

distal secondaries

much

abbreviated, the formerall very narrow, the ^five outermost bent or subfalcate; seventh primary longest, the tenth (outermost) shorterthanfirst.

Type, Cnipolegus hudsoni^Sclater

=

Phseotriccushudsoni.

($cu6s,

dusky

;-rpiKKos,asmallbird.)

Allocotopterus gen. nov. (Pipridse.)

'

Most

likeMachssropterusBonaparte,butshaftsof secondaries excessively thickened,twisted,

and expanded

terminally^intoclub-shaped or claw-like form;outermost_primariesnormally broadthroughout;^{tail less}thanone- thirdaslong^aswing, emarginate; nostril small,very broadly operculate, the

membrane

_occupying

much

the greater part of nasal^fossae;under_parts not_striped.

Type,Pipra^{deliciosaSclater}

=

Allocotopterusdeliciosus.

('AXX6KOTOS,unusual_{;irrepbv,wing.)}

Stictornis gen. nov. ⁽Cotingidx.}

Most

likeEuchlornis DeFilippi

(=

PipreoloSclater, neeSwainson?),but

bill

much

_{larger,stronger,}

and

_deeper, with

culmen more

_strongly arched

210 _Ridgtoay New Genera

_of

Tyr

annuls?,, Pipridae, Cotingidse.

and

_longerthanlateraltoes(without claws);tailrelativelyshorter (decid edly shorter than _{length of}

wing

^from

bend

to

end

of secondaries),

and

outermost_(tenth) primarylongerthan fifth.

Type,Ampelis^cinctusTschudi

=

Stictorniscinctus.

(Sri/cr6s,marked,spotted; 6pvis,bird.)

The

_{species designated} as the type ^ofthis

new

_genus I

remove

from AmpelionCabanis,

which

_accordingto

my

^{viewscontains}only

two

ofthe speciesthere placedⁱⁿVol.

XIV

ofthe"Catalogue^{ofBirdsinthe British}

Museum"

_(pp.373-376), the remaining one (Ampelis arcuata Lafresnaye) belonging^tothegenusEuchlornis DeFilippi.

Idiotriccus gen. nov. (Cotingidx.}

Superficiallyresembling^theTyrannine genusPogonotriccusCabanis

and

Heine, but ^tarsal envelope pycnaspidean, with ^thescutellaon lowerpor tionofbothacrotarsium

and

_plantatarsi roughened, subtuberculate; bill

broader_basally

and more

_depressed; nostrilssurrounded

by membrane

;

bristles offrontalantise, rictus,

and

chinlessdeveloped.

Type,Pogonotriccuszefedoni

Lawrence =

IdiotriccuszeledonL ("IStos,distinct;rplKicos,a small_bird.)

Elainopsis gen. nov. (Cotingidx.}

Superficially resembling ^the Tyrannine genus ^Elainea Sundevall,but tarsal envelope pycnaspidean

and

basal phalanx ^ofmiddle toe wholly unitedtooutertoe.

Type,Elainea_elegans Pelzeln

(=

Muscicapa gaimardi D'Orbigny?).

(Elainea,a genus^ofTyrannidse;-\- tf^is,aspect.) Species: Elainopsiselegans(Pelzeln).

Microtriccus_{gen. nov.} (Cotingidx.}

Similar to TyrannulusVieillot,but bill relatively stouter, with

culmen much more

decidedly curved,tarsus relatively shorter,^tailrelatively

much

shorter

(much

^{less than two-thirds as} long ^aswing), pileum not crested

and

without _yellow,

and

wings without ^{whitishbands.}

Type, Tyrannulussemiflavus Sclater

and

Salvin.

(

M

t/c/>6s,small_{; TP/KKOS,}asmall_bird.)

Species: Microtriccus semiflavus (Sclater

and

_Salvin), Microtriccus semi flavusbrunneicapillus (Lawrence).

Hylonax

gen. nov. (Cotingidx.}

Superficiallyresembling^the

more

stoutly built speciesoftheTyrannine genus MyiarchusCabanis,but tarsal envelopenon-exaspidean (theplanta tarsiconsisting of asinglecontinuous

row

of rather_large,quadratescutella, separated fromthe inneredge^oftheacrotarsiurn

by

^anarrownonscutellate space),^billlonger(as long^ashead),narrower, with_straighter

culmen and

tipofmaxilla

more

_abruptly decurved

and more

strongly uncinate,

and

with gonys

more

_convex,

more

_ascending terminally,

more

_prominent

basally.

Type,Myiarchus^validusCabanis

= _Hylonax

validus.

("TX?;,forest;&va, king.)