1883.] MR. SCLATER ON NEW SOUTH-AMERICAN PASSERES. 653 



5. Descriptions of five apparently new Species of South- 

 American Passeres. By P. L. Sclater, M.A.^ Ph.D., 

 P.R.S., Secretary to the Society. 



[Eeceived December 17, 1883.] 



(Plate LXI.) 



The subjoined descriptions are based upon specimens that have 

 remained long in my cabinet under MS. names onlv. Havino- 

 identified with these specimens examples in other collections and 

 thereby given currency to the names, I think it may produce confu- 

 sion if I delay the pixblication of the specific characters of the species 

 any longer. 



1. Basileuterus fraseri, sp. nov. (Plate LXI.) 



Basileuterus chrysogaster, Scl. P. Z. S. 1859, p. 137, et 1860, 

 p. 273, et 1865, p. 284, et Cat. A. B. p. 35. 



Supra schistaceus, interscapulio olivacescente ; suhtus omnino 

 jiavus; jiileo nigro, semicristato, intus medialiter fiavo aut auran- 

 tiaco ; macula ante-oculari indistincta fulva ; rostro nigro, pedi- 

 bus pallidis. Long, tola 5'0, aloe 2"5, cauda 21. 

 Hah. Western Ecuador, Pallatanga and Babahoyo (Fraser). 

 Mus. P. L. S. 



M. Taczanowski assures me that the Setophaga chrysogaster of 

 Tschudi, to which I have hitherto referred this species, is the same 

 as Basileuterus diachlorus of Cabanis. It is therefore necessary to 

 give a new name to the present bird, and I propose to call it after the 

 collector who first discovered it. 



2. Calltste cyanopygia, sp. uov. 



Calliste cyaneicollis, Scl. P. Z. S. 1858, p. 452 ; 1860, p. 292. 

 Nitenfi-nigra ; capite toto {nisi in loris) cum gutture et dorse postico 

 nitide cceruleis, ventre medio et lateribus purpurea lavatis ; alis 

 caudaque nigris cceruleo limbatis, illarum tectricibus ad ipsos 

 margines viridescenti-argenteo tnicantibus ; rostro et pedibua 

 nigris. Long, tota A'7, aim 2'7, caudce, paulum furcatce, IS. 

 Hub. Western Ecuador, Esmeraldas (Fraser). 

 Mus. P. L. S. 



Under the name above given I have for some time distinguished 

 the form of Calliste cyaneicollis which prevails in Western Ecuador. 

 It is readily separable from the typical 0. cyaneicollis of Bolivia by 

 having the whole of the lower back of the same shining blue as the 

 head and neck instead of silvery green. The edgings of tlie wings are 

 likewise blue in C cyanopygia, with only the extreme outer margins 

 of the wing-coverts tinged with green, instead of being altogether of 

 a shining green as in C. cyaneicollis. 



Prog. Zool. Soc— 1883, No. XLIII. 43 



