237 



TETKAOGALLUS CAUCASICUS. 



(CAUCASIAN SNOW-PARTRIDGE.) 



Tetrao caucasica, Pall. Zoogr. Rosso-As. ii. p. 76, and pi. (1811). 



Perdix alpina, Fischer de Waldh. N. Mem. Soc. Imp. Nat. Mosc. iv. p. 240 (1835). 



Chourtka alpina (Fisch.), Motchoulski, Bull. Soc. Imp. Nat. Mosc. i. p. 95 (1839). 



Tetraogallus caucasicus (Pall.), G. R. Gray, Proc. Zool. Soc. 1842, p. 105. 



Perdix (Megaloperdix) caucasica (Pall.), Brandt, Bull. Phys. Mat. Acad. St.-Petersb. i. p. 278 



(1843). 

 Oreotetrax, Cab. {Tetrao caucasica, Pall.) in Ersch & Grub. Encycl. xxii. p. 144 (1848). 

 Tetraogallus caspius, Gould, B. of Asia, pt. v. (1854, partim). 



Megaloperdix (Tetraogallus) caspia, Bolle & Brehm, J. f. Orn. 1873, p. 1 (nee Gm.). 

 Oreotetrax caspia, Cab. J. f. Orn. 1873, p. 63 (nee Gm.). 



Gornaya Indeika, Chourtka, Intaure, Russian. 



Figure notabiles. 

 Pall. 1. c. ; Motchoulski, op. cit. pis. 8, 11. 



cJ ad. pileo, nucha et collo postico cinereis : faciei lateribus et stria in collo utrinque cinereis, gula et collo 

 reliquo albis : corpore supra nigricante, cervino vermiculato : collo imo et dorso superiore immaculatis, 

 sed dorso reliquo, uropygio, tectricibus alarum et scapularibus maculis rufescentibus et cervinis notatis : 

 remigibus primariis albis nigricanti terminatis : secundariis ad basin albis, versus apicem dorso con- 

 coloribus; rectricibus centralibus nigris cervino-albo vermiculatis, reliquis nigris castaneo apicatis et 

 ad basin cervino vermiculatis : pectore et gutture imo albis nigro fasciatis : corpore reliquo subtiis 

 cinereo, cervino-albo vermiculato, hypochondriis magis schistaceis et castaneo nigroque striatis : sub- 

 caudalibus albis : rostro sordide flavido, versus apicem fusco : iride fusca : area nuda circum oculos 

 flava : pedibus flavo-aurantiacis. 



2 ad. mari similis sed sordidior et pallidior, pileo et collo postico rufescenti tinctis, stria in colli lateribus 

 rufescente nee cinerea, et fasciis in pectore angustioribus. 



Adult Male (Caucasus) . Crown, nape, and hind neck ashy grey ; a broad ashy grey patch covering a large 

 portion of each side of the head passes down the side of the neck, the throat and rest of the neck being 

 white ; upper parts greyish black, finely vermiculated with buff, the lower neck and fore part of the 

 back unspotted, the rest of the upper parts, including the wing-coverts and scapulars, marked with 

 large spots, partly buff and partly fox-red in colour ; primaries white, broadly terminated with blackish, 

 secondaries white at the base, otherwise marked like the back; central rectrices black, vermiculated 

 with buffy white, remaining tail-feathers black, tipped with chestnut-red, which is slightly vermiculated 

 with black, and the base of the feathers are vermiculated with buff; lower throat and breast buffy 

 white, closely barred with black, the bands following the contour of the feathers ; rest of the underparts 

 blackish ash-grey, closely vermiculated with buffy white, the flanks more slaty in tinge, each feather 



