^"ifitn" ] rnOOEKDINGS OK THE NATIONAL MI'SKTTM. 469 



1 ;iiii unable to (U'tect any diirerenco. In fact, tlio iiial*' also is very 

 similar, excei>t that the (luatcinalaii l»inl has a more or h'ss <listinct in- 

 dication of a whitish or rosy patch on the lower part ol' the throat. It 

 is this interme<liate eharaeterof the (liiatemalan liinl that imlnces me 

 to choose a trinomial rather than a biiiotiiial appellation Ibi- the form 

 under consideration. 



Whether the Xicara<xnan type, P. hdirostris (Bonap.), shonld also be 

 referred to the same species as a local race remains to be i)roven ; but 

 I am inclined to believe that such disposition of it will eventually have 

 to be made. The case of the Costa Itican form is scarely more doubt- 

 ful; but i*. homoclironx (Scl.), of Colombia, Ecuador, and Peru seems to 

 be specincally distinct, the female always (?) havinj:^ a rufous instead 

 of ;;ray or blackish caj). Such an arr.m^iement of thes(^ ])uz/,lin,<;' forms 

 would extend tlu' ran^e of 1*. (K/ldiiv from northern ^lexico (and eon- 

 tipuous ])ortions of Arizona) to Costa Rica, but would provide for the 

 recojiuition of the followinj^ gtH)<Trai)hi(;al or local races: 



(1) J\ atjldid' (Jj-.ii'i.). Eastern ."Mexi(^o. (P.tilJIitis ICIliot seems un- 

 questional)ly to be a pure synonym of this name.) 



(2) r. aglaiw albivcntria (Lawr.) Western Ttlexico. (1 liave previ- 

 ously referred Yucatan siiecimtuis to this form, but I now am inclined 

 to ('(insider those that I have seen from that country as representing: a 

 worn and bleached plumage of (ujUtuv.) 



(.}) P. mjUiuv iuKuJariH Kidj;\vay. Tres Marias Islands. 



(4) P. (Kjhiid- III/ pop lid' us llidgw. Honduras, ((trading inti> ofjiaia; 

 through specimens from (luatemala and southern Mexico.) 



(5) P. aijlaiic latirosiris (lionaj).). >sicaragua. 

 (fi) /'. nf/Iaiir ohftcurus Ki<lgw.* Cost.a Kica. 



2. Pithys bicolor olivascens, siihsp. imv. 



Si'TJSP. CilAR. : Similar to /'. liicohir Ijawr., but much more olivaceous. 

 l)articidarly <ui the sides, where the feathers adjoining the white of the 

 breast and belly are conspicuously margined with white, producing a 

 scaled api)earance. 



Tyi)e Ko. 120107, U. S. National ^luseum, .^ ad., Santa Ana, Hon- 

 duras, November 20, IS'M); Ericdi WittUugel. 



The true P. hieolor occujiies an intermediate jiosition between this 

 form and /'. leiicaspis Scl., of northern South Ameri<'a, tlu' tlirr^e being 

 doulttless geogi'aphical races of a single species. 



3. Gymnocichla chiroleuca Sol. A- Salv. 



Since neither the female nor young male of this very distinct species 

 appear to have been described, I give descriptions herewith : 



AiJidt f'nnale (Xo. 12()11>.'), U. S. National Museum Santa Ana, Hon- 

 duras, November 20, 1800; Erich Wittkugel): Top of head and hind 



•See theso proceeilinps, p.nRo 474. 



