296 CATALOGUE OF UNGULATES 



Water-Chevrotain. 



Typical locality Sierra Leone, West Africa. 



The only existing species ; type of Hycmosclms. 



Shoulder-height about 13 to 14 inches; three pairs of 

 lower premolars ; tail rather bushy ; general colour olive to 

 chestnut-brown, profusely spotted and striped on the body 

 with white or yellow, the thick and irregular stripes being 

 longitudinal and for the most part restricted to the Hanks ; 

 throat and upper part of chest with light and dark markings 

 comparable with those of Tragulns ; tail white below. 



Distribution, at the present day, co-extensive with that 

 of genus. 



The following races liave been named : — 



A. General colour dark olive, with very little 



speckling except on neck ; light markings on 



back white and distinct D. a- aquaiicmn. 



B. General colour more rufous, heavily speckled all 



over upper-parts ; light markings on back straw- 

 coloured and indistinct. 



a. General colour darker rufouS; with light mark- 



ings extending on to shoulders, and face 



with distinct dark chevron D. a. hatesi. 



b. General colour lighter rufous, with light mark- 



ings stopping short of shoulders, and face 



without distinct dark chevron D. a. cottoni. 



A.— Dorcatherium aquaticum aquaticum. 



Dorcatherium aquaticum typicum, LydcHer, Proc. Zool. Soc. 1906, 

 vol. i, p. 113. 



Typical locality Sierra Leone. 



General colour dark olive, without any distinct speck- 

 ling except on neck ; light markings on back white, distinct, 

 and numerous; face dark in middle line, elsewhere olive- 

 brown with a tinge of rufous, a distinct white flank-band 

 running from shoulders along flanks to join transverse loin- 

 band, and two flank-bands below this ; spots on back forming 

 distinct and continuous transverse bands ; tail with much 

 lirown above. 



44. 8. 22. 1. I Skin, mounted, and skull, imma- 



44. 9. 5. 1 (680, a). I ture female. Sierra Leone ; col- 

 lected.by Mr. J. Whitfield. Presented hy the Earl ofDcrhy, 1844- 



