194 MESSRS. SCLATEn AND SALV1N ON BIRDS [Mar. 27, 



168. Thalurania nigro-fasciata, Gould. 

 Hab. Sarayacu. 



169. CLYTOl^MA AURESCENS, Gould. 



Hab. Upper Ucayali. 



A single, not very perfect example of this rare species. M. Ver- 

 reaux's collection contains a specimen from the Rio Napo. 



170. Leucippus chlorocercus, Gould, MS. 



Five examples of this apparently new species, from Nauta and dif- 

 ferent parts of the Upper and Lower Ucayali. Mr. Gould describes 

 it as follows : — 



" Crown of the head, nape, shoulders, back, and upper tail-coverts 

 green ; tail-feathers bluish green, with a faint zone of darker green 

 near the end ; the extreme tip of all but the two central ones grey, 

 which gradually increases in extent as the feathers recede from the 

 middle, and becomes most conspicuous on the outer ones, where it 

 pervades the whole of the outer web ; wings purplish brown ; breast 

 greyish white, with an obscure spot of dull green in the centre of 

 each feather, particularly those of the throat ; flanks dull green ; 

 lower part of the abdomen and under tail-coverts greyish white ; bill 

 black ; feet dark brown. 



"Total length 3f inches, bill f, wing 2|, tail If, tarsi \. 



" Hab. The Upper Ucayali. 



"Remark. — This species is about the size of Leucippus chiono- 

 ffaster (Trochilus chionogaster, Tschudi)." 



171. Thaumantias fluviatilis, Gould, Intr. to the Troch. 

 p. 154. 



Hab. Lower Ucayali. 



172. Thaumantias bartletti, Gould, MS. 



Seven examples of this rather striking new species from Sarayacu. 

 Mr. Gould proposes to name it after its enterprising discoverer, with 

 the following characters : — 



" Crown of the head, nape, and back deep grass-green, changing 

 to bronzy green on the upper tail-coverts ; throat and chest rich blue ; 

 flanks green; centre of the abdomen greyish white ; under tail-coverts 

 bronzy brown, margined with grey ; tail bluish black, the upper sur- 

 face of the two central rectrices washed with green, and the four outer 

 feathers on each side obscurely tipped with grey in those specimens 

 which, according to Mr. Bartlett, are females ; wings deep purplish 

 brown ; upper mandible brownish black ; under mandible flesh- 

 colour ; feet dark brown. 



"Total length 3-£ inches, bill 1, wing 2^, tail l|, tarsi |. 



" Hab. The Upper Ucayali. 



"Remark. — This species, which I have named in honour of its 

 discoverer, is of the same size as, and closely allied to, my Thauman- 

 tias fluviatilis, from which it principally differs in having the breast 

 blue instead of shining green." 



