Anthracotheres and allied Forms. 



517 



brachydont, the enamel coarsely striated, and there is a fairly 

 well-marked cingulum all round except on the outer border. 

 The depth from the socket of the last molar to the lower 

 border of the orbit is approximately S'5 cm. 



A comparison of this specimen witb about twenty or more 

 fragments of B. giganteus and B. hyopotarnoides makes it 

 unlikely that it can be an extra large specimen of one or other 

 of these two forms. There is, nevertheless, a very wide range 



of variation in size in these two forms, some specimens of 

 hyopotamus being larger than giganteus, as, indeed, the type 

 is. Pilgrim, however *, finds that in his collections giganteus 

 is, on the whole, the larger form. 



Hemimeryx lydekkeri, sp. n. (Fig. 4.) 



The type-specimen is a right maxilla with the three molars 

 and the last premolar. With this fragment are associated 

 a left maxilla with three molars and some separate teeth. 

 The premolar has two cusps, the outer being extremely 

 crescentic and produced into a strong loop at each, corner. 

 The cingulum is well marked all round the tooth. 



The first molar is too worn to admit of much description. 

 The second and third molars may be described together : there 

 are only the four principal cusps, all extremely selenodont 



* Pilgrim, " The Vertebrate Fauna of the Gaj Series in the Bugti 

 Hills &c," L'aheontoloniu Indica, new series, vol. iv. memoir 2 (1912), 



