186C] MR. SCLATKK ON THE AMERICAN CAPRIMTJLGID.«. 141 



lateralibus vitta lata apicali, altera mediali, et tertia minors 

 basali, in pogoniis internis, albis ; rectricibus duabus mediis 

 dorso concoloribus : long, tot a 9, alee 6, caudce 4 "7. 

 2 ■ Vitta ffutturali fu/va, speculo alari rufescenle, et caudce 



fasciis albis vix apparentibus. 

 Hab. in Nov. Granada int. et rep. ^Equatoriali. 

 Obs. Similis S. bifasciatce, sed minor, et torque collari rufo- 

 castaneo, caudae pictura et pileo rufo punctato differt. 



I have several examples of this very distinct new species of Ste- 

 nopsis, all received from Bogota collections. Two examples of the 

 same bird in Mr. Gould's possession are from the vicinity of Quito. 

 The bird is probably the representative of the last species in the 

 Andes of Ecuador and New Granada, but is quite distinct. 



Genus 6. Hydropsalis. 



The species of this genus may be divided into three easily distin- 

 guishable sections, as follows : — 



Subgen. 1. Primaries crossed by a broad white wing-band; tail 

 doubly forked ; outer pair of rectrices of male of 

 the same length as the medial pair Diplopsalis. 



Subgen. 2. No white band on primaries ; tail doubly forked ; 

 outer pair of rectrices of male much longer than 

 the medial pair, which are also prolonged Hydropsal is. 



Subgen. 3. No white band on primaries ; tail singly forked ; outer 

 pair of rectrices of male more than double the 

 length of medial pair, which are the shortest Macropsalis. 



Subgen. 1. Diplopsalis. 

 1. Hydropsalis trifurcata. 



Hydropsalis climacocercus, Tsch. F. P. p. 128, pi. 6. f. 1 j Cassin, 

 /. c. p. 118 (?). 



H. trifurcatus, Natt. MS. no. 779 ; Tsch. 1. c. p. 128. 

 c? . Supra fulvescenti-fusca, nigro reticulata et variegata ; tec- 

 tricibus alarum et scapularibus maculis magnis pure fulvis or- 

 ?iatis ; alarum primariis nigris, vitta lata in qui n que externis 

 alba ; caudm rectricibus lateralibus utrinque duabus ad basin 

 nigris, unius utrinque exterioris basi nigra albo vitta ta, inde 

 vitta lata longitudinali alba, apicibus ipsis fuscis ; duabus 

 utrinque sequentibus albis, ad apicem fusco-nigris ; duabus 

 mediis dorso concoloribus : subtus alba, pectore fulvo, nigro 

 vermiculato : long, tota 10'2, alee 6, caudtv 6. 

 2 . Supra magis fusca, subtus omnino obscurior et nigro magis 

 variegata : cauda quoad formam mari simili, sed breviore, et 

 vitta longitudinali alba fere evanescente. 

 Hab. Maynas, Eastern Peru (Poeppig) ; Lower Ucayali (Bart- 

 lett) ; Rio Guapore and Forte do Principe, interior of Brazil (Natt.). 

 As far as I can make out from Tschudi's description and wretched 

 figure, his H. climacocerca is not different from Natterer's H. tri- 

 furcata. I cannot find any specific difference between a typical 

 specimen of //. trifurcata, Natterer, and a series of skins obtained 



