cocuuA. 159 



Key to the /ty<r/',x. 



a. Crown of head lavender-blue C. purpurea, p. 159. 



b. Crown of head cobalt-blue C. viridis, p. 1(50. 



706. Cochoa purpurea. The Parole Thmsli. 



Cochoa purpurea, Hodys. J. A. S. B. v, p. 359 (1836); Bhjth, Cat. 

 p. 195 ; Horsf. Sc M. Cat. i, p. 390 ; Jerd. B. I. ii, p. 243 ; Hume, 

 N. # E. p. 338 ; Hume $ Dav. S. F. vi, p. 337 ; Hume, Cat. 

 no. 607 ; Sharpe, Cat. B. M. iv, p. 3 ; Gates, B. B. i, p. 136 j id. 

 in Humes N. $ E. 2od ed. ii. p. 110. 



The Purple Thrush-Tit, Jerd. ; Cocho, Nep. ; Lho-nyum-pho, Lepch. 



Coloration. Male. Forehead, crown, and nape lavender-blue ; a 

 narrow frontal band, lores, and sides of the head black, this colour 

 extending narrowly round the hind neck ; the upper plumage ashy 

 purple; wing-coverts, wiuglet, tertiaries, and the basal half, or 

 more, of the outer webs of most of the primaries and of all the 

 secondaries dull lavender; primary-coverts and remainder of wing 

 black; tail lavender-blue, the inner webs of all but the median 

 pair of feathers mostly black, and all tipped black ; the whole 

 lower plumage purplish brown, inclining to black on the chin and 

 throat. 



Female. Forehead, crown, and nape lavender-blue ; a narrow 

 frontal band, lores, and sides of the head black, this colour extend- 

 ing narrowly round the hind neck ; upper plumage reddish brown ; 

 wing-coverts, tertiaries, and the basal half, or more, of the outer 

 webs of the secondaries reddish brown ; the basal portion of the 

 outer webs of the primaries blue ; remainder of the wing dark 

 brown ; winglet and the larger coverts near the edge of the wing 

 and the bases of the primary -co verts suffused with blue ; tail as 

 in the male ; lower surface reddish brown, paler than the upper 

 plumage. 



The young male has the wings and tail like the adult male ; the 

 forehead, crown, and nape black, barred with white ; the upper 

 plumage black, with fulvous streaks on the scapulars and lesser 

 wing-coverts ; the sides of the head black, with a white patch on 

 the ear-coverts ; the whole lower plumage bright reddish brown 

 cross-barred with black. A young male in August has nearly lost 

 the fulvous streaks on the scapulars and lesser wing-coverts; the 

 back is turning to ashy purple ; the head is still barred with white, 

 aud the lower plumage is still barred as in the young bird above 

 described. This plumage is probably retained throughout the 

 winter. 



The young female has the wings and tail like the adult female ; 

 the forehead, crown, and nape black, each feather with a broad 

 Bubtermiaal white band; the upper plumage reddish brown, with 

 pale fulvous stripes, which become elongated drops on the sca- 

 pulars ; sides of the ho;id black; ear-coverts centrally white: 

 lower plumage reddish brown cross-barred with black. 



