868 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiv. 
development, particularly of the desert forms, that scarcel}' any one 
character will serve to distinguish all its races from all those of aljjcstius. 
All the forms of Otocoris longirostrls may be readily separated from 
Otocoris aljyestrisfana^ the only form of Otocoris alpe^trh that occurs 
in Asia, bj'^ their much paler, more grajdsh coloration, and at all 
seasons by the entire absence of yellow on either head or throat. The 
present race, t3q)ical lomjirostris, is the giant of the genus, exceeding 
in size every other form. Old World or American, In general tone 
of coloration above it is neither very light nor very dark. 
An adult male from Namika-la-Pass, Cashmere, is considerably 
smaller in most of its dimensions than a specimen from Central Cash- 
mere, but has a decidedly longer bill. Allowing for difference of 
season there is apparentl}^ no significant contrast in color. 
OTOCORIS LONGIROSTRIS ELWESI (Blanford). 
Otocoris elwesi Blanford, Jonrn. As. Soc. Bengal, 1872, p. 62. 
Otocorys nigrifrons Prejewalsky, "Mong. and Thibet, II, 1876, p. 103." 
Otocorys teleschowi Prejewalsky, Ibis, 1887, p. 416. 
Otocorys elwesi Sharpe, Cat. Birds. Brit. Mus., XIII, 1890, p. 534 (part). 
ChaT8. suhsp. — Resembling Otocoris longirostrls longirostris^ but 
decidedly smaller and less grayish on the upper surface, particularly 
in winter. 
Measurements {tivo males). — Wing, 116.5-117.5 (average, 117) mm.; 
tail, 80-81 (average, 80.5) mm.; exposed culmen, 10-10.5 (average, 
10.3) mm.; tarsus, 22.5-23.5 (average, 23) mm.; middle toe, 11.5 mm. 
Ty2)e locality. — Kangra Lama Pass, Sikhim. 
Geographical distribution. — Thibet, including the northern and 
southern borders. 
Description. — Adult male {type). — " Narrow frontal band, lores, 
sides of head below the eye, and a band running back below the ear 
coverts, but not extending down the sides of the neck, crown of the 
head, two sincipital tufts, and the upper part of the breast black; fore- 
head above the black band, broad supercilia running back from it, with 
the ear coverts, sides of the neck intervening between the black of 
the cheeks and that of the breast, throat lower breast and abdomen 
white, nape, back of neck, rump and wing coverts pale gre3ash lilac; 
back pale fulvous brown with narrow dusky central stripes to the 
feathers, upper tail coverts long, pale brown with narrow central 
stripes and whitish edges; quills ])rown, the first primary with a white 
outer web, remaining primaries with narrow isabelline edges and tips 
which become white on the secondaries, the three last quills (tertiaries) 
and the central tail feathers brown with broad fulvous margins, the 
other tail feathers blackish with very narrow pale tips which can only 
be apparent in a freshly moulted specimen, the two outer rectrices on 
each side edged and tipped with white, most broadly on the outermost 
in which nearly the whole outer web is white; wing lining white; 
