SUPPLEMENT. 327 



39569 (pt. ii. p. 58). This female cranium may probably be referred 

 either to this species or to C. (?) patulicornis ; it is noticed 

 by the writer, op. cit. p. 13. This reference confirms the 

 generic determination of the present species, since the 

 females of the existing species of Cohus are hornless. 



Cobus (?), sp. 

 Hah. India. 

 M. 3683. The calvarium of a small female, either belonging to this 

 or a closely allied genus; from the Siwaliks of Perim 

 Island, Gulf of Cambay, India. The specimen approxi- 

 mates in structure to that of the larger so-called Eleotragiis 

 arundinaceus, but has the supraorbital foramina much 

 larger. Presented by Col. J. W. Watson^ 1887. 



Genus TETRACEROS, Leach \ 



The upper true molars are relatively broad, and have no inner 

 accessory column ; the premolars are relatively long, and the inner 

 crescents incomplete ; in the lower molars there may be a minute 



Eig. 51. 



-^0^ 



Tetraceros quadricornis (Blainv.). — The first four right upper cheek-teeth of a 

 female, from the grinding and outer aspects. Kecent, Madras. \. 

 British Museum (No. 884a). (From the ' Palseontologia Indica.') 



accessory column. The lachrymal depression is well marked, but 

 there is no vacuity. Horns are absent in the female. Part of the 

 upper dentition of the existing species is represented in woodcut 

 fig. 51. 



' Trans. Linn. See. vol. xiv. p. 524 (1823). 



