118 CASSIN'S MONOGRAPH OF THE GENERA 



Hah. — Bogota, New Grenada. 



Ohs. — The two specimens originally described by me belong to the Rivoli collection, 

 and have the appearance of being in imperfect plumage. The male may, however, 

 be easily recognized by the peculiar marks on the external webs of the outer tail 

 feathers, described above. The colors in the present specimens, black and 

 ferruginous, are peculiar to this species so far as I have seen. This species has not 

 been figured. 



5. Hydropsalis climacocercus. (Tsch.) Fauna Peruana Orn. pi. 6, fig. 1. 



Caprimulgus climacocercus. Tschudi, Wiegmann's Archiv. x. p. 269. (1844.) 



Orig. desc. 6 : " C. supra lineolis transversis alternis helveolis et nigris varius, 

 remigibus nigris albo-fasciatis, parapteris tectricibusque superioribus pogonio externo 

 ex rufo albicante-marginato, rectricibus intermediis duabus et externis eadem 

 longitudine cateris gradatim brevioribus, intermediis dorso concoloribus, sed fasciis 

 transversis incompletis nigris, externis pogonio interno albo, externo nigro et fusco 

 notato, gula alba, pectore dorso dilutiore ; abdomine albo, rostro nigro, pedibus rubris ; 

 iride flava. Long. tot. 11", cauda 6"." 



9 With the external tail feathers only slightly longest, central feathers next in 

 length. Tail uniformly colored gray and whitish, with irregular blackish bars, 

 general plumage as the male above described. 



Ohs. — I have seen the female only of this species, a specimen of which has been 

 recently added to our collection. Dr. Tschudi has given a good figure of the male 

 of this species in Fauna Peruana, as above. 



(B.) The following species of this genus I have not seen : 

 1. Hydropsalis TRiFURCATUs. Natterer in Tsch. Faun. Per. Orn. p. 129. 



Orig. desc. ; " Mannchen. Oberkorper graubraun, mit schwarlichen Querlinien ; 

 Mitte des Scheitels mit schwarzlichen Zickzack-Langsflecken ; scapular federn 

 schwarzbraun, mit rostgelbem Saume ; ein weisser Querstreifen liber die Fittig-und 

 Schwungfedern ; Kehle und Unterleib weiss. Der Schwanz bildet einen Dreizack. 

 Die Schwanzfedern, ausser den zwei mittlern, in der Mitte weiss. 



" Iris dunkelbraun, Augenringe gelbraun ; Schnabel schwarz, die Wurzel ins 

 Gelbrothliche libergehend; Nasenlocher rund, erhaben, Fusse graulich, hautfarben ; 

 Zehen dunkler, Klauen schwarzlich. 



"Ganze Lange 11", Flugweite 18" 6"', Schwanz iiberragt die Fliigelspitzen 

 um 2" 6"'." 



Male. Upper part of body grayish brown, with blackish transverse lines; middle 

 of the head above with blackish, zigzag, longitudinal spots ; scapular feathers black- 

 brown, with rusty yellow 5m W5; a whiter transverse stripe on the wing feathers; 

 throat and abdomen white. The tail forms a trident. The tail feathers, except the 

 two middle ones, white in the middle. 



