( 61 ) 



southern tributary of the Orinoco. North Brazil : Forte S. Joaipum, on the upper 

 Rio Branco, near the frontier of British Guiana. 



N.B. — The specimens from the Rio Branco are practically identical with those 

 from British Guiana. 



b. T. canadensis loretoyacuensis Bartl. 



Eastern Peru : Upper Ucayali (Bartlett), Loretoyacu (Hauxwell). N.W. 

 Brazil : Teffe (Hoffuianus) ; Poiares, >S. Isabel and Rio Amajau, Rio Negro 

 (Natterer). 



54. Thanmophilus nigricristatus subradiatus Berl. 



[Thamnqphilus uigricristatus Lawrence, 1'rur. Acad. Philad. 18G5. p. 107 (Liou Hill, Panama 



Railroad).] 

 Thamnqphilus subradiatus Berlepscb, Journ.f. Ornith. 1887. p. 17 (Upper Amazonia : type ex Iquitos, 



N.E. Peru, in Mus. v. Berlepsch examined). 



Nos. 912, 811. c? ad., ? : 2(3. vii., 13. vi. U6.— " Iris yellowish grey (<J), 

 whitish yellow (?) ; feet bluish grey, bill black." 



These specimens agree well with others from N.E. Peru. In the c? the pileum 

 is mainly black, though some of the occiput feathers show white marginal spots near 

 the base ; the forehead is slightly mixed with white. 



c? ad. — Wing 78 ; tail 66 mm. The female is in moult. 



55. Pygiptila stellaris (Spix). 



Thamnqphilus stellaris Spix, Av. Bras. ii. p. 27. tab xxxvi. fig. 2 (1825 — Para). 

 Cfr. Hellmayr, Nov. Zool. xiii. (1905) p. 367. 



No. 693. S ad., 22. v. 06. — " Iris brownish grey, feet dark bluish, bill black, 

 below bluish grey." — Wing 77; tail 41 ; bill 21 mm. 



No. 887. <? imm., 23. vi. 06. Soft parts as above, but " feet blackish." — Wing 

 77 ; tail 39i ; bill 22 mm. 



No. 692. ? ad., 22. v. 06.—" Iris brown, feet and bill bluish grey."— Wing 76 ; 

 tail 40J ; bill 2H mm. 



The SS differ from a topotypical Para example only by having the throat 

 of the same cinereous colour as the rest of the under-surface instead of whitish 

 gray. The ? is practically identical with one from Para. 



56. Dysithanmus schistaceus heterogynus n. aubsp. 



No. 847. c? ad., 17. vi. 06. " Iris red, feet bluish grey, bill black."— Wing 67 ; 

 tail in moult ; bill 11 h ; graduation of tail 8 mm. 



No. 838. S juv., 16. vii. 06. " Iris grey, bill black, below bluish grey."— Wing 

 67 ; tail 57 ; bill 18 mm. 



No. 812. ? ad., 12. vii. 06. " Iris red, bill black, below light grey."— Wing 62 ; 

 tail 50 ; bill 18$ mm. Type of subspecies. 



Nos. 857, 866. ? ¥ in mouit : 18, 19. vi. 0(3. " Iris red or yellow, feet blue-grey, 

 bill black, below grey."— Wing 64, 64i ; tail 50, 52 ; bill 18J mm. 



S ad. Resembles the c? of U. s. schistaceus (D'Orb.) of North Bolivia, in having 

 the bend of the wing and the upper wing-coverts uniform schistaceous without auy 

 white, but differs by the considerably darker grey colour of the plumage. The tail 

 seems to be less graduated. There is no white interscapular blotch. 



