138 TIMALTIDiE. 



/'". Outer edges of primaries conspi- 

 cuously parti-coloiired. 



IK Nostrils overlumg by hairs Pseudominla, p. 286^ 



wi*. Nostrils overhung by numerous 

 small hairs; tail strongly 

 graduated. 

 i''. Bill narrow ; hind toe and claw 



equal Fulvetta, p. 289. 



f'. Bill bmad ; hind claw shorter 



than hind toe Lioparus, p. 293. 



d. Wings longer, not so rounded and not fitting 



close to the body. 

 h'. Wing more than three times lengtli of 



tarsus , HoBiziLLAs, p. 257. 



i'. Winer less than three times length of tarsus. 



g" . Tail more than thi-ee times length of [p. 258. 



tarsus Erythrocichla, 



h". Tail equal to twice lengtli of tarsus. . ^thostoma, p. 259. 

 C. Tail under 45 mm. 



e. Bill as long as the head; curved downwards. Rimatoh, p. 255. 



f. Bill half as long as the head ; straighc. . . . Turdintjlus, p. 250. 



Genus DRYONASTES 8harpe, 1883. 



The genus JJrj/onastes, of which D. ruJicolUs is the type, 

 contains those Ijaiighing-Thruslies which have the nostrils almost 

 comi)letely hidden by bristles, and in many respects show a 

 similarity to the Oorvicke, from which, however, in others they 

 are as widely divided as tliey are in their liabits aiid nidification. 



They are all noisy, gregarious birds, feeding principally on the 

 ground but also on bushes, and they eat both insects, seeds and 

 fruit. 



Harington proposed to divide the birds of this genus into two 

 genera on account of the varying degree of density in the plumes 

 and bristles at the base of the bill and by the differences in the 

 shape of the bill itself. To be consistent, however, one would 

 have to make yet further genera, for if rujlcollis differs in degree 

 from ccerulatits, so also fjalbanus differs to an equal extent from 

 rvficollis. Under the cii'cumstances it vvoukl seem wiser to keep 

 them together, and this I do. 



Key to Species and Siihspecies. 



A. Chin and throat black. 



a. Ear-coverts black D. nijicollis, p. 139. 



b. Ear-coverts white. 



a' . Back chestnut ' D. niichalis, p. 140. 



b'. Back olive-brown D. chinensis, p. 141. 



B. Chin and throat white. 



c. Tail with no pale tip D. ccerulatus ccenilatus, p. 141.. 



d. Tail with pale tip. 



c'. Ear-coverts white D. c. subccsrulatus, p. 142. 



d'. Ear-coverts brown D. c. kaurensis, p. 143. 



C. Chin and throat chestnut-brown . . 1). snnnio, p. 144. 



D. Chin black, throat yellow D. galbanus, p. 145. 



