Species of ike Genus Pipra. 45 



? ad. — Exactly like the male in colour and structure. 

 I Lave before me twenty-four specimens from the Upper 

 Rio Negro, Orinoco, Caura, N.E. Peru, East Ecuador, and 

 from Bogota collections. Not one of them has the yellow 

 vertical spot which is always present in P. virescens, but in 

 some specimens there are a few very small pale yellowish 

 dots on the forehead or anterior part of the crown, only to 

 be seen when the feathers are raised. In two Bogota skins 

 and one " ? " from Borba (Natterer coll.) the two outer 

 tail-feathers are equal and about two millimetres shorter 

 than the remainder ; in all the other specimens the outer- 

 most rectrix is quite as long as the third, while the second 

 is from two to four millimetres shorter — just as described 

 above. Sexed males and females are quite alike in this 

 character. It is strange that this peculiarity should not 

 have been noticed before. 



Three examples collected by Natterer at Marabitauas and 

 Borba, which were considered by Pelzeln to be the $ and $ 

 juv. of his P. virescens with a yellow crown-patch, agree in 

 every respect with the large series from Peru, Ecuador, 

 Venezuela, and Bogota. 1 can see no difference between 

 specimens from different localities either in size or colour. 



Although P. virescetis and P. stolzmanni are evidently 

 geographical representatives, the difference in the form of 

 the tail is so striking thatil do not feel justified in using 

 trinomials. 



Measurements, 



Wing. Tail. Bill. 

 Mus. Yiudob. mm. mm. mm. 



1. "c?"ad. Marabitanas, Rio Negro. (Type 



of species.) 49 21 10 



2."$." Borba, Rio Madeira, Feb. 7, 



1820. Natterer coll 49A 25 9| 



Mus. Brit. 



3. "3 ''ad. Marabitanas, March 1G, 1831. 



Natterer coll 47 21£ 9 



4. " 2 •" Xeberos, N.E. Peru, June 2, L866. 



E. Bartlett coll 4s 26 lo 1 . 



5. "J." Chamicuros, N.E. Peru, May -">. 



L867. E. Bartlett coll 48 27 «Ji 



6. "?." Chyavetas, N.E. Peru, July 16, 



L866. E. Bartlett coll |:) 23 10 



