THICK- SiaNNED BEASTS. Tl 



also the two upper cutting-teetb, and tlie canines are like those of the 

 smaller skull bent down, but the alveolar part of the base rather more 

 produced. The lower jaw has the three deciduous grinders and the six 

 cutting-teeth all well developed, the two middle ones being much the 

 longest. The canines are, as in the smaller skull, slender and cm'ved, 

 the lower jaw is much more developed, extended in front, and broader 

 and much more expanded below, approximating it more closely to the 

 shape of the jaw of the adult animal. (See Ann. d Mag. Nat. Hist. 

 1871, Yin. p. 133). 



Sub-Section 1. HYDROTHERIUM. 



Front part of jaws dilated and trujicated. Nostrils on the upper side 

 of nose closed by a valve. Eyes high up on the sides of the 

 head in a line with the base of the ears. 



Sub-Order 6. OBESA, Graij, Cat. Carniv. dc. p. 356. 



Family 8. HIPPOPOTAMIDiE, Gray, Cat. Carniv. dc. p. 356. 



1. HIPPOPOTAMUS, Graij, Cat. Carniv. dc. p. 356. 



1. Hippopotamus amphibius. Gray, Cat. Carniv. dc. p. 356. 

 Blainv. Osteog. t. i. — \n. 



726 a. Animal, badly stuffed. 



S. Afi-ica. Presented by Mus. Eoy. Coll. Surgeons. 



726 e. Animal, stuffed ; half-grown. 



S. Africa. 42, 12, 6, 11. Presented by the Earl of Derby. 



726 h. Animal, stuffed; very young. 

 726 d. Animal, stuffed ; young. 



S. Africa. 42, 12, 6, 12. Presented by the Earl of Derby. 



726 c. Foetus in spirit. 

 H. amphibius, Gray, P. Z. S. 1868, p. 491, t. 2 ; Cat. p. 357, f. 40 



(nat. size). 

 Cape of Good Hope. 



726 j. Skeleton ; young, imperfect. 

 Africa. 



726 a. Skull ; adult. 

 S. Africa. 



726 d. Skull. 



Gambia. Presented by the Earl of Derby. 



726/ SkuU. 



S. Afiica. 51, 11, la, 12. Zool. Society. 



726 g. Skull ; very young. Length of upper jaw 28 in. 

 S. Afi-ica. 51, 12, 23, 4. 



726 h. Skull ; veiy large. 



Cape of Good Hope. 64, 11, 12, 51. Said to be from the Linnean 

 collection. 



726 i. SkuU. 



Africa. 68, 2, 12, 1. Presented by Dr. Falconer. 



