298 Hans von Berlepscli on new Trocliilidse. 



8 ad. {^). Long. tot. 77-72, al. 47^-451, caud. 26-241, 

 rostr. 14-12J, caudse furcai 3f-2|. 



2 ad. ( ? ). Long. tot. 76-75, al. 46, caud. 26-25^, rostr. 

 14|-14^, caudae furcae 2 mm. 



Habitat. Roraima, Brit. Guiana, 3500-4500 feet (H. 

 Whitely, jr., coll.). 



Mus. Salv. & Godm. and H. v. B. (In my collection there 

 are eight adult males from Roraima, 8th and 21th August, 

 4th October, 1st, 2nd, 6th, 8th November, and two females, 

 29th January and 28th September, collected by H. Whitely, 



jr.) 



The large series of skins of this apparently new species now 

 before me enables me to speak more confidently about its 

 distinctness from the allied forms of this difficult group. It 

 is evidently nearly allied to Chi. prasimis (Less.) of Cayenne, 

 with which my friend Mr. O. Salvin has united it; but in 

 my opinion the bluish tinge of the fore neck (which is present 

 in all my Horaima birds, whilst it is altogether absent in an 

 undoubted Cayenne skin of my collection), the distinct and 

 deep emargination of the tail, showing an approach to 

 Chi. atala (while in true Chi. prasimis the tail is rounded, 

 the outer rectrices being shorter than the middle ones), and 

 the much longer wing- and tail-feathers are characters by 

 which my new species will be recognized primo visu. Perhaps 

 there exists a still closer relationship between the new species 

 and a bird inhabiting Upper Amazonia, which I believe is 

 entitled to bear the name Chi. daphne, " Bourc.,^'' Gould. 

 Nevertheless two skins in my museum from 01iveu9a (Upper 

 Amazons) and Yquitos ? [Whitely) are different from Chi. 

 subfurcatus in possessing much longer and stronger bills, and 

 in presenting a much more decided blue shade on the throat 

 and fore neck. Further, the emargination of the tail is 

 much less than in Chi. subfurcatus. 



Muenden, March 1887. 



