On a new Tree-Partridge. 165 



XVI. — On a new Species of Tree-Partridge from the Moun- 

 tains of the Malay Peninsula. By Herbert C. Robinson, 

 M. B.O.U., Curator of the Selangor State Museum. With 

 Notes by W. R. Ogilvie-Grant. 



(Plate IV.) 



This very distinct and interesting species of Tree-Partridge, 

 of which a brief diagnosis has already been published in the 

 ' Bulletin of the British Ornithologists' Club/ is not an 

 unexpected addition to the Peninsular fauna. It differs from 

 all described members of the genus, except Arboricola rubri- 

 rostris of Sumatra, in having the crown of the head black, 

 but from that species it is readily distinguished by the colour 

 of the bill and by many striking differences in the plumage. 

 Its nearest ally is undoubtedly A. atrigularis, which ranges 

 from Assam southwards to Upper Burma. The type-speci- 

 men has been deposited in the National Collection. A male 

 and female were obtained by my native collectors, who also 

 observed, but did not secure, Caloperdix oculea and the 

 recently described Rheinhardtius ocellatus nigrescens Rothsch., 

 as well as a Silver-Pheasant, probably undescribed, which 

 I myself have met with in the same district. 



The new species may be fully described as follows : — 



Arboricola campbelli. (Plate IV.) 



Arboricola campbelli Robinson, Bull. B. 0. C. xv. p. 28 

 (1904). 



Adult male. Top of the head, nape, lores, and periocular 

 region jet-black ; a broad white supra-loral stripe ending im- 

 mediately above the eye, the feathers with black shaft-stripes ; 

 a white stripe from the base of the lower mandible, broadening 

 posteriorly until it reaches the ear-coverts, which are greyish 

 black. Sides of the neck black ; a somewhat ill-defined 

 black-and-white stripe from each side of the occiput to the 

 nape, the bases and margins of the feathers being white. 

 Chin and upper throat black ; feathers of the lower throat 

 with their bases white, forming an ill-defined collar. Chest 

 and upper abdomen dark grey ; lower abdomen paler, whitish 

 in the middle with a brownish tinge ; flank-feathers greyish, 



ser. viii. — vol. v. N 



