98 



name is, I think, a little questionable. The differences discoverable upon a careful comparison 

 of it with B. tamatia are, as I stated when I characterized the bird, somewhat slight : I have 

 added a summary of them to my specific diagnosis. Moreover, as already pointed out in the 

 letterpress relating to the previous species, some of them do not appear to be quite constant. At 

 the same time I may remark that all the examples of JB. ^uhnentiim which I have seen have the 

 throat of a much paler and more rufescent colour than in B. tamatia, and the front of a paler 

 and more fulvous hue, which, moreover, extends over the anterior part of the head. 



Numerous examples of £. ])ulmentum have been obtained in the wood-region of Eastern 

 Peru by the well-known collectors who have of late years visited that district. Mr. Bates when 

 on the Upper Amazons procured it from his correspondents on the Rio Javari. Mr. E. Bartlett, 

 who met with it at Chamicuros, has kindly furnished me with the following notes on its habits: — 



"Although I obtained many specimens of this pretty little Bucco in Chamicuros, it was far 

 from common. It was met with in pairs, and, like all its congeners, was only to be found in the 

 most lonely and dense parts of the forest. Here it was seen watching for its prey from a dead 

 branch of a tree, about fifteen to twenty feet from the ground. 



" I did not obtain or observe this species in any other locality during my stay in Eastern Peru." 



I subjoin a list of the examples of this form of Bucco tamatia in my collection and in that 

 of Messrs. Salvin and Godman : — 



Xo. Sex. ilus. Patria. Long, tota, alse, caudae, rostri. 



1. — P. L. S. Upper Amazons (0- 7'1 3-0 2-4 1-1 



2. — P. L. S. Chamicuros, E. Peru (^. BarifZe/if) . 6-2 2-8 2-4 1-1 



3. — P. L. S. Chimacui'os, E. Peru(E. 5arr/rfO. 6-4 2-9 2-2 I'l 



4. _ S.-G. Chamicuros, E. Peru (E. ^arZZeW) . 6-3 2-9 2'3 1-1 



5. — P. L. S. Sarayacu, Ecuador (5mc^%). 6-0 S'l 2*5 1-2 



6. — S.-Gr. Sarayacu^ Ecuador {Buckley). 6"5 3'0 2-5 1'2 



7. — S.-G. Sarayacu, Ecuador (Smc^%). 5-8 3-0 2-2 1-1 



8. _ S.-G. 6-4 3-0 2-4 1-2 



The figure (Plate XXXI. fig. 2) is taken from No. 3, No. 1 is the type of the species as 

 described and figured, P. Z. S. 1855, p. 194, pi. 106. 



