HYDROCICHLA. 87 



Key to the Species. 



a. Crown of head white; nape black II. frontalis, p. 87. 



b. Crown of headland nape chestnut II. ritjicapilla, p. 87. 



635. Hydrocichla frontalis. The White- crowned Forktail. 



Enicurus frontalis, Blyth, J. A. S. B. xvi, p. 156 (1847) ; id. Cat. 



p. 159 j Horsf. 8f M. Cat. i, p. 346. 

 Ilenicurus frontalis, Blyth, Flwes, Ibis, 1872, p. 259, pi. ix ; Oates, 



S. F. v, p. 248 ; Tweedd. Ibis, 1877, p. 310 ; Hume fy Dav. S. F. vi, 



p. 360 ; Hume, Cat. no. 584 quat. 

 Hydrocichla frontalis (Blyth), lSharpe,Cat. B. M. vii, p. 321 : Oates, 



B. B. i, p. 29. 



Coloration. Forehead and front of crown white ; head, neck, 

 breast, back, lesser and median wing-coverts, primary-coverts and 

 winglet black; scapulars and greater wing-coverts black, tipped with 

 white ; primaries black ; secondaries and tertiaries black, with broad 

 white bases ; rump and upper tail-coverts, abdomen, and under 

 tail- coverts white; the two outer pairs of tail-feathers white, the 

 others black with white bases and tips. 



The youngest bird I have been able to examine has the whole 

 head, neck, back, and breast dusky brown, with no trace of white 

 on the forehead or crown. Nestling birds will, no doubt, prove to 

 be spotted as in the other species. 



Bill black ; legs flesh-colour. 



Length nearly 8; tail 3 - 6 ; wing 3*6; tarsus 1*1; bill from 

 gape "95. 



Distribution. The extreme south of Tenasserim, extending down 

 the Malay peninsula to Sumatra and Borneo. 



636. Hydrocichla ruficapilla. The Chestnut-backed Forktail. 



Enicurus rulicapillus, Temm. PI. Col. iii, pi. 534 (1832) ; Blyth, Cat. 



p. 159. 

 Henicurus ruficapillus, Temm., Ehocs, Ibis, 1872, p. 257 ; Hume ty 



Dav. S. F. vi, p. 361 ; Hume, Cat. no. 588 bis. 

 Hydrocichla ruficapilla (Temm.), Sharpe, Cat. B.M. vii, p. 319; 



Oates, B. B. i, p. 28. 



Coloration. Male. Forehead white; a frontal band, the lores, 

 cheeks, ear-coverts, chin, and throat black ; the forehead, crown, nape, 

 upper part of back, and the sides of the neck chestnut ; back, lesser 

 and median coverts, primary-coverts, and winglet black ; greater 

 coverts and scapulars black, tipped with white ; primaries black ; 

 secondaries and tertiaries black, with broad white bases and narrower 

 tips; rump, upper tail-coverts, and the lower plumage white ; the 

 feathers of the breast and the upper part of the abdomen margined 

 with black ; the two outer pairs of tail-feathers white; the others 

 black, with broad white bases and tips. 



Female. Resembles the male, except that the whole of the back 

 is chestnut, tinged with olivaceous on the lower portion. 



The young bird is probably spotted in its first stage of plumage. 



