BIRDS OF WESTERN COLOMBIA. 1167 



who obtained a large series at Forte do Joaquiin, on the confines 

 of British Guiana. 



125. Cercomacra berlepschi Hart. 



Pyriglena herlepschi Hartert, Bull. B. 0. 0. vii. p. xxix (1898. — 

 Cachabi, IST. W. Ecuador ; = 6 ad.). 



Thmnnophilus cachahiensis Hartert, 1. c. p. xxix (1898. — 

 Cachabi, N.W. Ecuador ; = $ ). 



Cercomacra herlepschi Hartert, Nov. Zool. ix. 1902, p. 612 

 (crit.). 



ISTo. 1958. S a-d. S. Joaquim, Bahia del Choco, l,viii.08. — 

 "Wing 68 : tail 46 ; bill 19 A mm. 



No. 2089. J ad. Near Sipi, 200 feet alt., 18.ix.08.— Wing69 ; 

 tail 47| ; bill 19 mm. 



No. 1966. § ad. S. Joaquim, 4.viii.08.— Wing 67 ; tail 43 ; 

 bill 19 mm. 



" Iris dark red, feet and bill black." 



The males are uniform deep black, with a large, concealed 

 white interscapular patch. The female is rather duller black, 

 the abdomen slate-blackish, and the feathers of the throat, fore- 

 neck, middle of the breast, as well as the lesser and median upper 

 wing-covei'ts, show very distinct, though sometimes slight, white 

 apical spots or edges. Dr. Hartert has already pointed out that 

 these two types of coloration, originally described as different 

 species, Avere merely male and female of one and the same species. 

 From the evidence at hand, there can be no doubt that this view is 

 correct. 



The specimens from Choco agree in every respect with the 

 series from N.W. Ecuador in the Tring Museum*. C. herlepschi 

 is somewhat difficult to place. In general form it closely re- 

 sembles some of the short-tailed species, e. g. G. tyrannina, 

 but the tail is much shorter and slightly rounded instead of 

 being graduated, the wing relatively longer, and the bill longer 

 as well as heavier. Although it might some day be found 

 necessary to create a new genus for its reception, it would be 

 unwise to do so without a thorough stud}' of all the related 

 groups. 



126. Hypocnemis n^vi(5ides Lafr. 



Conopophaga ncevioides Lafx^esnaye, Rev. Zool. x. p. 69 (1847 — • 

 no locality given ; type in Mus. Acad. Philadelphia, coll. 

 Delattre — we fix as type locality Panama whence the Derby 

 Museum (Liverpool) possesses two specimens obtained by De- 

 lattre ; cfr. Sclater, P. Z. S. 1858, p. 254). 



Hypocnemis ncevioides Cassin, Proc. Acad. N. Sci. Philad. 1860, 

 p. 190 (Falls of the Truando). 



* In this connection a misleading error may be corrected. Hartert {I. e.) gives 

 the length of the wing for P. berlepschi, as 44 to 46 mm. However, five adult males 

 from N.W. Ecuador, including the type, in the Tring Museum present the following 

 dimensions : wing 67-68^ ; tail 43-47; bill 19^20 mm. The females (5) are slightly 

 smaller; wing 64-68 ; tall 41-46 ; bill 18-19 mm. 



