THAYER AND BANGS: YERTEBRATA OF GORGOXA ISLAND. 97 



much larger IniJ. Tlie much tlarker and duller Llue of the rump iu the male 

 is very striking, and the dull, dusky green of the upper jiarts iu the female is 

 "wholly different from the paler and more olive green of these parts in C. 

 cyanetcs. 



Gyanerpes ajaneus has, according to Ridgway, never been recorded from anv 

 point in South America west of the Andes, so that the form inhabiting Gor- 

 gona Island appears to be widely separated geographically from that species. 

 It must, however, be borne in mind that very little is known about the ornis 

 of the western coast of Colombia opposite Gorgona Island. 



12. Coereba gorgonae, sp. nov. 



Type. — Coll. E. A. & U. Bangs, No. 14,009, adult ^, Gorgona Island, June 

 28, 1904. 



Thirty specimens, adult ^9,1 juv. ^, June 23-July 2, 1904. 



M. C. Z., Xos. 40,291-40.306, adults ^ 9, Gorgona Island, June 24 to 

 July 2,-1904. 



Characters. — A very distinct species, nearest to C. cerinoclunis Bangs of the 

 Pearl Islands, Bay of Panama. Differing in the much smaller — reduced to a 

 mere dot — white wing spot, much deeper black back, darker gray throat, 

 darker and more greenish yellow belly, and in having a greenish band border- 

 ing the gray of throat below. Size about the same. 



Color. — Adult (J, upper parts deep sooty black, a broad white superciliary 

 stripe extending from nostril to beyond auricular region; rump patch olive 

 yellow ; malar region, chin, and throat dark gray (almost slate-gray. No. 5, of 

 Rilgway), tlie malar region distinctly freckled with dusky; below the gray 

 of throat, an ill-defined baud of dull oil green, which separates the gray of the 

 throat from the yellow of the breast; rest of under parts gamboge yellow with 

 a greenish tinge, passing into yellowish olive on flanks; under tail coverts 

 buff"y white ; lateral rectrices broadly tipped with white on inner webs, nearly 

 as broad as in C. luteola ; white wing spot reduced to a mere trace on the three 

 or four primaries next the outermost. Female similar, perhaps averaging 

 slightly paler and duller. Young differs from the adult in Laving the throat 

 yellowish and the back duller and browner. 



Measurements — 



No, Sex. 



14.009 ^ ad. 



14.010 J ad. 



14.011 ^ ad. 



14.012 9 ad. 



14.013 9 ad. 

 A. 9 ad. 



Remarks. — This fine island species can be separated at once from all its 

 allies by the very small white wing spot, the greenish band below the gray 

 throat, and the dusky freckling of the malar region. In its dark gray throat 



VOL. XLVl. — NO. 5 7 



