320 



2. Hydrocichla rufldorsalis. 



Henicm-us rufldorsalis, Sharpe, Ibis, 1879, p. 255. 



Similar to H. riiJicapiUa, but distinguished by the white throat 

 and rufous back. Total length 7*2 inches, eulmen 0'95, wing 3'5, 

 tail 3, tarsus 1-15. (Sharpe, I. c.) 



Hah. Lawas river, N.W. Borneo {Treacher, Mus. Oxon.). 



The rufous back, which I considered to be sufficient for the 

 separation of the present species from H. rttji^apilla, is not reallj- a 

 specific character, as the hen of ff. ruJicapiUa has the back rufous. 

 In no stage of plumage, however, has the last-named bird been 

 described with a white throat ; and as the bird from the Lawas 

 river described by me appeared to be perfectty adult, I have 

 thought it better to keep the two distinct for the present. 



3. Hydrocichla velatus. 



Euicurus velatus, Temm. PL Col. iii. pi. 160 (1823) ; Gray, Gen. B. 



i. p. 204 (1847); Bp. Consp. i. p. 251 (1850); Horsf. Sf Moore, 



Cat. B. E.I. Co. Mus. i. p. 347 (1854) ; Gray, Hand-l. B. i. p. 248, 



no. 3597 (18G9). 

 Henicurus velatus, Elices, Ibis, 1872, p. 253 ; Salrad. .inn. Mm. 



Civic. Genov. xiv. p. 2.34 (1879). 

 Allocoturus velatus, Va7i der Hoenen, Handb. Zool. ii. p. 536 



(1856). 



Adult female. General colour above dark slaty grey ; wing-coverts 

 blackish, externally edged with dull slaty grey ; quills blackish 

 brown, with au alar speculum formed by the base of the inner secon- 

 daries, the innermost of which are entirely white ; rump and upper 

 tail-covcrts pure white ; centre tail-feathers blackish, white at base 

 and tipped wdth white, the two outer feathers entirely white, the next 

 one white rather broadly fringed with blackish on both webs ; crown 

 of head dull chocolate, forming a cap ; lores and base of forehead 

 black, followed by a broad band of white across the forehead, which 

 is separated from the chocolate crown by a narrow blackish band ; 

 upper edge of eyelid and a small spot behind upper eye white; ear- 

 coverts slaty black ; cheeks, chin, and upper throat black ; lower 

 throat and remainder of under surface of body white, with dusky 

 margins to some of the feathers of the fore neck ; sides of breast 

 slaty black ; thighs and under tail-coverts white ; under wing- 

 coverts white ; axillaries white, dusky on inner web ; quills below 

 dusky brown, wilh a white patch at base of secondaries. Total 

 length 6 inches, eulmen 0'7, wing 2-9, tail 2*95, tarsus 0*9. 



Adult rwa?e (Hoedjoeng, Sumatra ; H. O.Forbes). Differs in having 

 the head grej" instead of chocolate- brown. Total length 6'8 inches, 

 wiag 3-25, tail 3-3, tarsus 0-95. (Mus. F. Nicholson.) 



A female collected by Mr. Forbes measured : — Total length 

 65 inches, wing 3-15, tail 3"1, tarsus 1. 



Hah. Java and Sumatra. 



