( 360 ) 



b. P. caelrsti-pileata Goeldi. 



Western Brazil: Humaytha, Rio Madeira; Uby Cachoeira, near the junction 

 of the Rio Poms with the Rio Acre. Northern Pern: Chyavetas (Bartlett). 



c. J', hoffmannsi Hellm. 



North Brazil: Teffe, on the Rio Solinioes. 



44. Pipra nattereri Scl. 



Pijpra nattereri Sdatar, P.Z.S. Land. 1851. p. Git. tab. 39 (Borba, Rio Madeira); Pelzeln, Zur 

 Ormth. BratiL ii. 1868. p. 127 (Borba). 



Nos. 1389, 1390, 1391, 1392, 1395, 1401, 1402, 1407, 1437. 66 ad., Borba, 

 24 25 26, 2T. xi., 4. xii. 06. " Iris white, feet yellowish red or greyish red, bill 

 blackish, below grey."— Wing 50-52 ; tail 25—26 ; bill 8J— 9 mm. 



Nos. 1398, 1399, 1400, 1405, 1424. SS juv., Borba, 25,26,27, 29. xi. 06. 

 " Iris white or yellowish white, feet greyish brown, bill blackish, below grey." 



Nos. 1456, 1457. S S juv. (in the plumage of the female), Borba, 11. xii. 06. 

 " Iris whitish yellow or pale bluish grey, feet greyish yellow." 



Nos. 1382, 1406, 1458. ? ? ad., Borba, 23, 27. xi., 11. xii. 06. " Iris greyish 

 white, feet yellow or greyish brown, bill blackish grey or grey."— Wing 50; tail 

 26—27 ; bill 9 mm. 



This splendid species was hitherto only represented by four specimens, one 

 <? ad. and three ? ?, collected by Natterer, some seventy years ago. As will 

 be seen from the above, Mr. Hoffmanns sent us a large series. Must of the 

 males, however, are in moult, and there are but four specimens in perfect 

 plumage. I have very little to add to Dr. Sclater's original description. The 

 top of the head and the rump (including the upper tail-coverts) are of a delicate 

 milky-white colour with a beautiful opalizant gloss, the cap being laterally- 

 bordered by a narrow pale blnish line, less prouounced on the anterior portion. 

 The back is grass-green, the sides of the head, throat, and foreneck duller and 

 more yellowish green, the rest of the under-parts bright yellow. The remiges 

 are distinctly edged with yellowish white on the inner webs. 



In the females, the rump is grass-green like the back, the cap bluish 

 Teen, and the olive-green colour of the foreneck is continued along the sides of 

 the breast and abdomen. 



Six specimens wear the plumage of the female, but on the cap and rump 

 some milky-white feathers are already to be seen. 



45. Pipra stolzmanni Hellm. 



Pipra stolzmanni Hellmayr, Ibis 1906. p. 4-4 (Marabitanas, upper Rio Negro). 



Pipra virescens (uec Pelzeln !), Pelzeln, Zur Ornith. Bras. ii. 1868. pp. 128, 187 (part. : Borba). 



Nos. 1306, 1310. SS ad., Paraizo, right bank of the Madeira, 15, 16. x. 06. 

 " Iris yellowish white, feet black or dark grey, bill black."— Wing 49, 51 ; tail 

 2H, 23; bill 9 mm. 



Nos. 1339, 1429, 1445, 1160. <$ $ (in moult), Borba, 16, 30. xi.; 5, 11. xii. no. 

 " Iris yellowish white, feet black, bill black or blackish grey."— Wing 481 — 49J ; 

 tail 20, 22 ; bill '■> mm. 



These specimens show that strncture of the tail as described by me I.e. In 

 two of them, the outermost rectrices are equal, and about 3 mm. shorter than the 



