DESCKIPTIOX OF PLATES. 



553 



Figs. 5 and 5 a. — Enhydriodon ferox. Fine specimen of anterior 

 portion of cranium of an old individual, witli very perfect alveolar 

 ridges. Shows on either side the alveolus of a large outer incisor, 

 which evidently served as a subsidiary canine. The middle incisors 

 are not only wanting, but the alveoli are completely filled up and 

 obliterated. The canines, which are broken across, are seen to be very 

 large, and were evidently of great strength and massiveness. All trace 

 of the first molar, which is very small and deciduous, has disappeared. 

 The second molar has two fangs, and is encircled by a rugged basal 

 ridge. The carnassier is very remarkable, and presents the prominent 

 feature of the genus. It is nearly square, instead of being triangular, 

 as in both Lutra and Enhydra ; and instead of the cusps and trenchant 

 ridges of Lutra, or the flattened ineqtialities of Enhydra, the coronal 

 lobes are developed into cervical mammilla, somewhat like those of the 

 Mastodon. A more detailed description of this tooth will be found in 

 the memoir on ' Enhydriodon ' (See p. 335). Behind the carnassier, 

 the tubercular is seen in situ. 



This specimen is also represented in Plate XXVII. fig. 5. — B.M. No. 

 87,155. 



Figs. 6, 6 o, and 6 h. — Enhydriodon ferox. Fine specimen of ante- 

 rior portion of cranium of a young and probably female individual. 

 Shows three incisors on either side, the two inner of which are very 

 much compressed laterally, so that their antero-posterior diameter is 

 three times that of their width. The outer incisors are remarkably 

 large, as are also the canines. The left canine has dropped out, leaving 

 a large oval alveolus ; the right canine is seen in section. Behind the 

 canine, on either side, is an extremely small empty alveolus of the first 

 deciduous molar. Then comes the bicuspid second molar, the peculiar, 

 square, mammillated carnassier, and the tubercular. 



This specimen is also represented in Plate XXVII. figs. 1 and 2. 

 —B.M. No. 



37,154. 



Plate Q. 



Carnivora, from the Sewalik hills. 



Figs. 1, la, and 1 b. — Skull, showing palate and teeth, of a fossil 

 species of Ca7iis ? from the Sewalik hills.i — B.M. No. 40,183. 



Figs. 2, 2 a, and 2 b. — Skull, showing palate and alveoli of entire 

 dental series of a fossil species ofCanis ? from the Sewalik Hills. — B.M. 

 No. 37,150. 



Fig. 3. — Fragment of palate, right side, with two posterior molars of 

 fossil Canis ?— B.M. No. 40,180. 



Figs. 4, 4 a, 4 b, and 4 c. — Ursitaxtis Sivalensis. Very perfect 

 cranium and face of a species of Eatel from the Sewalik hills. This 

 appears to be the specimen of fossil ' Gido ' described by Messrs. Baker 

 and Durand, in the Journ. As. Soc, vol. v. p. 582, and figured in Plate 

 XXVII. fig. 5, of the same volume (See antea, p. 351). — B.M. No. 

 40,184. 



' Another specimen belonging to Dr. 

 Falconer, and labelled by him ' Skull of 

 fossil Canis, from Sewalik hills,' has, 

 since his death, been added to the col- 



lection in the British Museum. Along 

 with the skull are portions of the femur, 

 tibia, and bones of the foot. 



