MAMMALIA. 



otber that the specific identity of the two animals seems highly 

 probable. "This female skull has the same large upper front 

 incisors, but its first and second molars are smaller than in the 

 foregoing male, but the two palates have much the same form. 

 The last molars of this female are through the alveolus, but not 

 yet on a level with the other molars. The orbits are larger 

 than in the foregoing male, and are slightly forwardly oval. 

 The interorbital area has much the same slope as in the preced- 

 ing male skull, and the facial portion about the same forward 

 direction. Prom the upper margin of the nasals to the inferior 

 border of the foramen magnum measures 3'70 inches, and from 

 the latter point to the tip of the premaxilla is 5"30 inches. 

 The temporal ridges are far apart. 



In the lower jaw there is the peculiarity of the complete 

 absence of the last molar on the left side. 



The hyoid : on the basihyal end of the right thyrohyal 

 there is a large hook-shaped process, which in the other basihyal 

 assumes the form of a bullate hooked pointed epiphysis. It is 

 in no way connected with the basihyal, and when the right 

 thyrohyal is viewed from below this hook-shaped body appears 

 only as a backwardly and upwardly projecting process, whereas 

 on the left side it appears as an epiphysis ; viewed from above, 

 the basihyal end of the right thyrohyal is seen to have been 

 coniposed of the hook-shaped process described, and an inter- 

 mediary portion amalgamated on the under surface; on the 

 left side the same structure is observed. It would thus 

 appear that there are cerato and epiphyals so approximated 

 in their position on the basihyal as to amalgamate with the 

 thyrohyal ; on the same stand with this is exhibited the 

 partially ossified thyroid cartilage. Presented by the Zoologi- 

 cal Gardens, Calcutta, 8th April 1879. 



f. The skin, skull, and the bones of the trunk of an 

 adolescent male. This animal in external appearance is com- 

 parable with d, as the hair in colour and distribution is the 

 same, the skin of the face of d being only a little more hairy. 

 This latter character, however^can be explained: the animal died 

 in the month of December, the second cold season it had lived 

 in Calcutta, and it is probable that the increased amount of 

 hair on the face was due to climate. 



Although there is such a close resemblance externally 

 between the animals, the skulls are remarkably different. 

 This skull has large upper incisors, but smaller than those 

 of d, as are also its molars. The orbits are much laro-er and 

 more open, and without any flattening above ; the interorbital 

 area is longer, and not so forwardly sloped, and the muzzle is not 



