1883.] MR. SCLATER ON NEW SOUTH -AMERICAN PASSERE3. 653 



5. Descriptions of five apparently new Species of Soutli- 

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

 F.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 only. Having 

 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 publication of the specific characters of the species 

 any longer. 



1. Basileuterus fraskri, 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 

 jlavus; pileo nigro, semicristato, intus medialiter fluvo aut aura7i- 

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

 bus palUdis. Long, tola 5'0, alee 2'5, caudce 21. 

 Had. 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. 

 Nitenti-nigra ; capite toto (nisi in loris) cum gutture et dorse postico 

 nitide ceeruleis, ventre medio et lateribus purpurea lavatis ; alis 

 caudaque nigris cceruleo limbatis, illarum tectricibus ad ipsos 

 margines viridescenti-argenteo micantibiis ; rostro et pedibus 

 nigris. Long, iota 47, alee 27, caudcB, paulum furcatee, TS. 

 Hab, 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 C. 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 the 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. 



Proc. Zool. Soc— 1883, No. XLIII. 43 



