3. TETRAOGATXrS. 109 



basal part of the secondaries white ; the chest and upper breast pale 

 g;rey, most of the feathers, except those in the centre, with a black 

 s])ot on either margin, and the outer tail-feathers black, slifrhtly 

 tipped with rufous, mottled with black. Total length 24 inches, 

 wing 11-."), tail T'o, tarsus 2-6. 



Adult female . Differs from the male in having some of the grey 

 feathers on the sides of the throat and all the feathers of the chest 

 mottled with butf. Total length 23 inches, wing 11, tail G-9, 

 tarsus 2-3. 



In a yoinujer specimen, with the outer primaries pointed, the 

 lower part of the chest differs from that of both the adult birds, 

 many of the feathers are white, and the rest are slightly mottled 

 with grey. 



JIab. Mountains of Asia Minor, ranging west to the Gok Moun- 

 tains, east to Transcaspia, north to the Caucasus, and south to the 

 higher ranges near Shiraz, S. Persia. 



(', h. ^ 2 "<i- *^- Taurus Mountains, April Tweeddale Coll. 



( C. G. Banford). 



c. Imm. sk. Kurdistan. Sir A. H. Layard [P."]. 



(/. J ad. skeleton. Taurus. C. G. Danford, Esq. [P.]. 



5. Tetraogallus caucasicus. 



Tetrao caucasica, Fall. Zuoyr. lioss.-As. ii. pp. 7G, 87 (note), nl. 



(1811). 

 Chourtka alpina, Moischoulski, Bull. Soc. Mosc. no. i. p. 95, pis. viii., 



viii. bis, & xi. (1839). 

 Perdix (Megaloperdix) caucasica, Brandt, Bull. Ac. St. Petersb. \iii. 



p. 100 (1841), i. p. 281 (184.".), iii. p. 189 (1845\ 

 Tetraogallus caspius, Gould, B. Asia. vii. part text to pi. 29 (18o3) ; 



Gray, List GaUince Brit. Mu.s. p. 82 (I8ti7) [part.]. 

 Oreotetrax caucasica, liadde, J.f. O. 1876, p. 21t'). 

 Tetraogallus caucasicus, March. Bee. Zool. 1877, p. 354, pi. 133; 



Secbuhjn, Idi.'>, 1883, p. 27. 

 Megaloperdix caucasica, Boyd. B. Cauca-'t. p. 140 (1879) ; id. Consp. 



Av. Imp. Boss. fasc. i. p. 38 (1884) ; Baddc, Orn. Caucas. p. 335, 



pi. xxi. ligs. 1 & 2 (1884) ; id. J.f. O. 1^8.5, p. 79. 

 Megalloperdix caucasica, Lorenz, Beitr. Orn. Xaukas. p. 55 (1887). 



Adult male and female. Resembles T. caspius in general plumage, 

 but the back of the head and nape are rusty red. The whole mantle 

 is barred and vermiculatod with black and buff; the lower part of the 

 cheek and the band down the sides of the throat dull chocolate. 

 The feathers of the chest are blackish grey, margined all round and 

 vermiculated and irregularly barred with buff. Total length 21 

 inches, wing 10-f<, tail G•J^, tarsus 2'4. 



In a iioumicr male the band down the sides of the throat is dark 

 grey ; and in a still younger example the feathers of these parts 

 are blackish, barred and edged with buff, like those of the chest. 



llah. Caucasus Mountains. 



a. (5 inim. sk. Tersclia-t*blast, N. Caucasus, Jan. Purchased. 



{Lorenz). 



