RECENTLY-DESCRIBED SPECIES. 413 



Gould's figure is taken from a specimen I procured on the 

 Khasia Hills in 1862. Godwin-Austen obtained one in the 

 Cachar Hills.— Jerdon, Ibis, 1872, p. 303. 



Trochalopteron Fairbanki, Blanford, Journ. As 

 Soc, Beng., XXXVIIL, pp. 175, 177, pi. 17. 

 (1869). 



The Pulney Laughing Thrush. 



Description. — Head above dark brown, the margin of the 

 colour distinct and not passing into any thing else on the nape, 

 but distinctly contrasting with the olive colouring of the back ; 

 lores which are small, and a narrow streak running back from 

 the eye dusky; supercilia and orbital feathers white; back olive, 

 rather brighter towards the rump ; wings and tail rather darker ; 

 beneath the chin and throat, with the sides of the head below 

 the eyes, rather pale grey ; the feathers of the middle of the 

 breast the same, but with dark stripes in the centre ; sides of the 

 neck ashy ; this colour passing far back close to the dark brown 

 of the head ; whole of abdomen and lower tail-coverts ferrugi- 

 nous ; flanks and thigh-coverts olivaceous; beak dusky; legs 

 dark plumbeous. Dimensions as in T. Jerdoni ; wing, 3'4 ; tail, 

 3-7 ; bill at front, 0*7. 



This species is very close to T. Jerdoni, but differs apparently 

 in the want of the black chin, in the head being darker ; the 

 rufous colour of the abdomen is paler ; and this colour extends 

 to the under tail-coverts, which are olivaceous in T. Jerdoni. 

 It abounds in the Pulney range of hills, in Southern India. — 

 Jerdon, Ibis, 1872, p. 306. 



Sibia gracilis, (M' Clelland), P. Z. S., 1839, p. 159. 



The Graceful Sibia, 



Description. — Entire under surface white ; under tail-co- 

 verts pale rusty ; head dark smoke-brown ; back ashy pale 

 smoke-brown ; rump and upper tail-coverts more ashy than 

 brown ; tail deep brown or black, broadly tipped with pale 

 grey ; quills brown, the primaries being edged with glossy 

 greenish black for about half their length, the remainder with 

 a narrow border of pale yellowish white; long tertiary nearest 

 the body pale ashy brown. Wing, 3-f- ; tail, 3^- ; tarsus, 1 . 



This species replaced T. capistrata on the Khasias and other 

 ranges to the eastward, Godwin-Austen having found it toler- 

 ably abundant in North Cachar. He observed it hunting for 

 insects in the flowers of the silk-cotton-tree (Bombax). — Jer- 

 don, Ibis, 1872, p. 308. 



