166 Mr. H. C. Robinson on a new 



shading into olive-brown near the extremity, with a sub- 

 terminal rufous-buff shaft-spot and a terminal black band ; 

 concealed patch of downy feathers under the wing grey. 

 Feathers of the thighs greyish olive, obscurely barred with 

 orange-buff and tipped with black ; under tail-coverts with 

 their bases black, their tips greyish olive; mantle, back, and 

 upper tail-coverts golden olive-brown, each feather with 

 three narrow bars of black ; tail-feathers above blackish, 

 vermiculated with olive-brown, beneath greyish olive. 

 Primaries brownish black ; outer primary-coverts and 

 secondaries black, their outer webs broadly margined with 

 chestnut; remaining wing-coverts greyish olive, their con- 

 cealed portions black. Tertiaries and scapula ries greyish 

 olive, with a broad oblique subterminal bar of black and a 

 terminal one of chestnut. Quill-lining greyish, the inner 

 wing-coverts whitish, grey at the base, the outer series sooty 

 black ; axillaries greyish white. Iris brown ; bill black ; 

 gular and orbital skin brick-red ; tarsi and claws bright 

 sealing-wax red. Total length 216 mm., wing 143, tail 61, 

 tarsus 43, culmen 21. 



Adult female. Similar to the male. Total length 223 mm., 

 wing 137, tail 61, tarsus 41, culmen 19. 



Habitat. Telom Valley (3500 r -4500'), borders of Perak 

 and Pahang, Malay Peninsula. 



Since the publication of the twenty-second volume of the 

 'Catalogue of Birds ' in 1893 several new species of Tree- 

 Partridge have been described, and Mr. W. R. Ogilvie-Grant 

 has kindly supplied me with the following amended key to 

 the known species of Arboricola including Tropicoperdix : — 



A. Concealed patch of downy feathers under the 

 wing grey. (Arboricola.) 

 a. Feathers of the sides and flanks grey or grey 

 edged with chestnut, usually with a white 

 spot or shaft-stripe on each. 

 a'. Upper back olive-brown, barred and 

 fringed with black. 

 a". Top of the head bright chestnut ; chin 

 and throat black, in some specimens 

 each feather narrowly margined with 

 white torqueola, <$ . 



