TROPICOPERDIX. 99 



(ii.) With upper back not barred. 



65. Arboricola intermedius. The Aracan Hill-Partridge. 



Toun-hka, Burma. 



<y 10" to 11". Legs red. Bill black. Crown olive. Lower margin of rufous 

 throat meeting grey of breast, without black line. Black patch on throat. Above 

 olive, without bars, but sometimes with dusky margins. N.E. India to Bhamo. 

 Eggs (1-50 X 1-15) white. (H. & M. ii. 85.) 



66. Arboricola rufigularis. The Eufous-throatid Hill-Partridgb. 



Lakom, Sikhim; Pokhu, Daphla Hills ; Peura, Kumaun. 



^ 10" to 11"; 7 to 10 oz. ? 9" to 10^'; 7 to 10 oz. Legs red. Bill black. 

 Resembles A. intermedius, but lower margin of rufous throat has sharply defined 

 black line. Breast grey. Flanks grey, spotted white, with chestnut borders. 

 Above unbarred. Lower back, rump, and upper tail-coverts with semi-oval black 

 spots. Kumaon to Tenasserim, Eggs (1-5 x 1-2) white, with grey specks. 

 (H. & M. ii. 75.) 



Also A. gingica. Sonnerat's H.P. Like A. rufigularis, with triangular black patch on fore- 

 neck, with bands of white and maroon. 



(iii.) With upper back freckled and mottled. 



67. Arboricola mandellii. The Bhutan Hill-Partridge. 



(J 8 J" to 11". Legs red. Bill black. Crown chestnut. Back olive, margined, 

 not barred. Cheeks rust-red, spotted black. Lower margin of rufous throat 

 with sharply defined black line. Breast maroon. Patch in neck pure white. 

 Flanks grey, with central white spots and chestnut edges. Sikkim. (H. & M. ii. 83.) 



Also A. orientalis. Horsfield's H.P. from E. Java. 11". Eyebrow, cheek, and throat 

 white. Above dark brown, fringed blackish. Flanks grey, irregularly barred black and white. 

 A. sumatrana. The Sumatran H.P. Dififera from A. orientalis in having the back fringed 

 and barred, no white eye-stripe, and ilank-feathers with triple bands. 



Genus TROPICOPERDIX. 



Differs from Arboricola in wanting the peculiar row of superorbital bones, and 

 the patch of downy feathers under the wing is white. 



68. Tropicoperdix chloropus. The Green-legged Hill-Paetridgb. 



xX(<'/)4s= pale green; 7roOs=a foot. 



Toun-hka, Fegu. 



S 11 J" to 12"; 9 to 12 oz. ? lOJ" to 11 J"; 8 to 10 oz. Legs pale green. 

 Bill greenish. Crown and above brown, barred black. Chin, throat, eye-stripe, 

 and sides of neck white, spotted black, not enclosed by black band. Breast olive, 

 banded black. Flanks buff, irregularly barred black. Axillaries and patch of 

 downy feathers white. Outer webs of secondaries with rufous bars. Tonghoo 

 to Tenasserim. (B. 129. 0.6. i. 172. 0. 32. H. & M. ii. 91.) 



Also T. charltoni. The Malayan H.P. Differs from T. chloropus. Above finely mottled. 

 Hanks regularly barred. Irregular neok-band of black spots. 



