Anthracotheres and allied Forms. 521 



The talonid is broad, tliere is an absence of secondary cusps 

 in the transverse valleys, and no cingulum, except a small 

 ledge at the front outer edge. The centres of the cusps lie 

 rather close together, and their sides slope very gradually 

 down to the level of the socket. 

 Measurements : — 



cm. 



Length 5-7 



Breadth, front half 3-6 



„ hind half 3-0 



Hyotherium (?) Jeffrey si, sp. n. (Fig. 8.) 



The type-specimen is a fragment of a palate showing the 

 second and third premolars on the right side and the third 

 and fourth premolars and first two molars on the left. 



The molars are square in shape, with a stout cingulum in 

 front, which in the first molar continues outside and behind, 

 while in the second it ceases round the metacone, to reappear 

 as a small tubercle on the middle of the hinder border. The 

 cusps are all conical, except that the protocone and hypocone 

 in each tooth send out a ridge forwards and diagonally 

 across, presumably to a protoconule and metaconule respec- 

 tively, though these cusps are not very prominent. The 

 enamel is somewhat weathered, but shows a good deal of 

 wrinkling into secondary cuspules. 



Fit?. 8. 



Of the premolars, the fourth has two well-marked outer 

 cusps joined by various wrinkles of the surface to an inner 

 cusp. The third is the same in general pattern, but the 

 posterior outer cusp is smaller and the inner cusp slopes 

 away behind to a circular depression in the talonid. (In the 

 figure this is better shown in the left tooth.) The second 

 premolar has two outer cusps, the hind one again being 



Ann. & Mag. X. Hist. Ser. 8. Vol xii. 37 



