78 Messrs. Hancock & Atthej on Loxomma Allmanni. 



likewise the posterior nares and tlie palato-temporal foramen. 

 The basal portions of the teeth, too, are nearly all present ; 

 but the crowns, unfortunately, have disappeared. 



In every respect the characters agree with those of the 

 previously described specimen ; and in addition, tlie parietal 

 foramen is distinctly marked in the new example. This 

 characteristic featm-e is not seen in either of Mr. Thomson's 

 specimens ; but in the original cranial fragment described by 

 Professor Huxley it is well indicated on the inner surface*. 

 In our specimen it is small and circular, measuring not much 

 over an eighth of an inch in diameter. It is placed near the 

 centre of the wide occipital portion of the median coronal 

 bones. The mucus-grooves on the muzzle, too, are well 

 developed : one passes straiglit across the premaxillaries in 

 front ; from either end of this, and forming with it an acute 

 angle, another groove passes backwards for a considerable 

 distance along the side of the muzzle. 



The teeth are nearly all present in a more or less imperfect 

 condition ; mostly, however, the stumps only remain. There 

 are three pairs of large tusks — one vomerine, two palatal. 

 The vomerine tusks are situated about 1^ inch behind the 

 anterior margin of the pramaxillffi ] the basal portions of these 

 project considerably, and measure in diameter | inch. The 

 first pair of palatal tusks are placed 2 inches further back, 

 and are scarcely so large as the vomerines ; the second pair, 

 which seem equally large, are 1^ inch further in the rear, 

 being somewhat in £i-ont of the transverse centre of the skull. 

 Each prffimaxilla boars four teeth, M'hich are upwards of a 

 ^ inch wide at the base. There are five or six rather smaller 

 teeth between the vomerine and the first palatal tusk, and the 

 like number between the latter and the second palatal tusk ; 

 and behind this, again, there are four or five more, making in 

 all in each side of the jaw about twenty teeth. All these 

 teeth are placed a little apart, and have depressions behind 

 them in the alveolar border ; the tusks also are accomj)anied 

 by similar depressions. 



Not far from the spot where this fine skull was obtained, 

 two mandibular rami (a right and a left) occmTcd two or three 

 feet apart. They are of the same size, and most probably be- 

 longed to the skull in question. This would seem to be likely, 

 not only on account of their close proximity, but also on 

 account of their size, which agrees well with that of the 

 cranium. Tlie left ramus is imperfect, the posterior portion 

 liaving been fractured and lost. A piece 9 inches long, how- 

 ever, of the anterior portion remains in a very good state, with 

 * Quarterly Journal of the Geological Society, 1862, vol. xviii. p. 291. 



