294 PIIASIANIDiE. 



feathers ; the ear-coverts, as in all the members of this genus, are 

 greatly produced and form long white tufts on each side of the head ; 

 the whole of the plumage above and below is pure white, shading 

 into grey on the longer wing- and upper tail-coverts ; primary-quills 

 dark brown, secondaries blacker and somewhat glossed with purple. 

 Tail with 20 feathers, purplish bronze towards the base, shading into 

 dark greenish blue and deep purple towards the extremity*. Naked 

 parts on the sides of the head scarlet ; bill reddish horn ; legs red. 

 Total length 3B inches, wing 12-4, tail 18"6, tarsus 3'9. 



Adult female. Is distinguished from the male by the absence of 

 spurs ; the plumage is perfectly similar. 



Hah. Mountains of AVestern China and Eastern Thibet. 



a. ^ ad. sk. Thibet. B. H. Hodgson, Esq. [P.], 



(Type of the species.) 



b. (S ad. sk. (imperfect). Thibet. B. H. Hodgson, Esq. [P.]. 



2, Crossoptilon leucurum. 



Crossoptilon tibetanum, Oustal. Ann. Sci. Nat. (7) xii. p. 315 (1892) 



[part.]. 

 Crossoptilon leucurum, Seebohin, Bull. Brit. Orn. Club, no. iv. p. xvii 



(Dec. 21st, 1892) ; id. Ibis, 1893, p. 250 [Between the Sok Pass 



and Chiamdo, E. Tibet]. 



Adult male and female. Like C. tibetanum, but with the greater 

 part of the tail-feathers white. In the male all the tail-feathers are 

 ])ure white, with black extremities glossed with piu-plish blue. In 

 the female the white on the tail-feathers is less extensive, and the 

 middle and outer pairs have the inner webs grey, while all are 

 tipped and margined with dark grey. 



Hah. Eastern Thibet, between the Sok Pass and Chiamdo and 

 Lhassa. 



3. Crossoptilon mantchuricum. 



Crossoptilon tibetanum, Lamprey {nee Hodgs ), P. Z. S. 1862, p. 221. 



Crossoptilon auritum sive mantchuricum, Swirih. P. Z. S. 1862, p. 286, 

 & 1863, p. .306 [Mantchouria]. 



Crossoptilon auritum, Sclat. List of Plias. p. G, pi. 5 (1863) [Mant- 

 chouria] ; Milne-Edw. N. Arch.'Mus. Bull. i. p. 12, pi. i. figs. 1 & 2 

 (1865) [E. of Pekiu] ; Sdat. P. Z. S. 1866, p. 418 ; Saxirin, P. Z. S. 

 1866, p. 437 [Mts. N.W. of Pekio] ; David, N. Arch. Mus. Bull. iii. 

 p. 37 (1867) [San-Yu] ; Bartl. P. Z.8. 1868, p. 115 ; Gould, B. Asia, 

 vii. pi. 22 (1870). 



Crossoptilon mantchuricum, Netpton, Ibis, 1865, p. 361 [Pekin]; 

 Gray, List GallinesBrit. Mus. p. 31 (1867) ; id. Hand-l. B. ii. p. 259 

 (1870); David, N. Arch. Mus: Bull. vii. p. 11 (1871) [Pekin]; 

 Swinh. P. Z. S. 1871, p. 399 ; Sclat. P. Z. S. 1871, p. 495 ; Elliot, 



* In the type specimen the six outer pairs of tail-feathers have an oblong 

 white spot or line on their outer web nearly parallel to the sliaft, but these 

 markings are not equally developed on the two sides. In three specimens 

 of C. tibdaniim living in the Zoological Society's Gardens, as well as in a large 

 number of skins I have e.xamined, the white spots on the outer tail-feathers 

 are entirely absent, and in one the primaries are greyish brown. There can be 

 no doubt that C. drouyni is synonymous with G. tibetanum. 



