260 CATALOflUE OF UNGULATES 



8. 11. 14. 8-12. Five skulls, of wliich at least two are 

 female. Shanghai. Presented h/ F. W. Siyan, Esq., 1908. 



13. 9. 13. 19. Skull and skin. Hwong-ti-tsze, Hupei ; 



collected by Mr. W. E. Zappey. By exchange loitli 



Museum of Harvard College, U.S.A., 1913. 



Section B.— TRAGULINA. 



Chevrotaiiis, or Mouse-Deer, as the members of this 

 group ai'e commonly termed, are small artiodactyle ungulates 

 resembling the Pecora (vol. i, p. 8) in the absence of upper 

 incisors and in the possession of the power of ruminating, 

 l)ut differing in that the stomach has only three (in place of 

 four) chambers, and by the complete development of the 

 lateral metacarpals. Horns or antlers are invariably lacking ; 

 and the main metacarpals and metatarsals may either remain 

 separate or may be respectively fused into cannon-bones ; the 

 fibula of the hind-leg is complete ; and the navicular, cuboid, 

 and ectocuneiform elements of the tarsus are united into a 

 single bone. Four teats ; placenta diffuse. Face-glands, 

 together with lachrymal pits and vacuities in the skull, 

 invariably wanting, as are also tarsal and metatarsal glands. 

 The feet are of a primitive type, the web on the hind aspect 

 of the pasterns consisting of a fold of skin which stops short 

 midway between the lateral hoofs and the heels ; the back of 

 the pasterns being open in its lower half, while the front 

 shows a long triangular depression, with its apex reaching the 

 line of the lateral hoofs. Upper canines in males long and 

 tusk-like (fig. 46). 



The range includes the tropical and subtropical forest- 

 tracts of south-eastern Asia and the African equatorial forest- 

 zone. 



Family TRAGULID^. 



As this is the only family of the section, its characters 

 may be taken to be the same as those of the latter. Tt is 

 divisible into the foUow^ing two generic groups : — 



