284 ELEPHANTIILS:. HIPPOPOTAMUS. 



The Asukoko. Hyrax abyssinicus. 



Hyrax habessinicus, Ehrenberg unci Hemptich, Symb. Phys. Mamm. 

 dec. i. — Blainv., Osteog. p. 10. 



a. Skull. Abyssinia. Presented by J. Reid, Esq. 

 6. Skull. Abyssinia. Presented by J. Burton, Esq. 

 c. Skull. Abyssinia. 



Hyrax ruficeps. 

 Blainv., OstSog. G. Hyrax, p. 10. pi. 2 (skull). 



The Daman. Hyrax syriacus. 



Blainv., OsttSog. G. Hyrax, pi. 1 (skeleton, female), pi. 2 (skull and 

 dentition). 



Hyrax arboreus. 

 Blainv., Oste"og. G. Hyrax, p. 10. pi. 2 (skull and teeth). 



Hyrax dorsalis. 



*a. Skull. Fernando Po. From the Zoological Society's Collection. 



HIPPOPOTAMUS. 



Teeth : — Incisors |^ ; Canines £j ; Premolars ^ ; Molars ^| ; =40. 



The Zeekoe or River Horse. Hippopotamus amphibius. 



Grew, Mas. Reg. Soc. p. 14. tab. 1 (skull). — Spix, Cephalog. tab. 7. 

 fig. 22 (skull).— Ouv., Oss. Foss. i. p. 270. pi. 1. fig. 1 (skeleton), 

 figs. 2-11 (vert.), pi. 2. figs. l-4(skull), figs. 1-20 (parts of skeleton). 

 — Pander and If Alton, Vergl. Osteol. pi. 5 (skeleton), pi. 6 (skull), 

 pi. 7 (feet and limbs).' — Blainv., Osteog. G. Hippopotamus, pi. 1 

 (skeleton, male), pi. 2 (skull). — Schreb., Saugth. vi. pi. 308 (skull). 



Hippopotamus, F. L'uv., Dents des Mamm. p. 206. no. 84. figs. 1-3 

 (dentition). 



Ilippopotame, Buff., Hist. Nat. xii. p. 68. pi. 6 (skull). 



a. Skull: adult. S.Africa. 



b. The front of the lower jaw. 



c. Tusk, very much elongated. 



d. Skull. Gambia. Presented by the Earl of Derby. 



e. Tusk. From Dr. Mantell's Collection. 



/. Skull. From the Zoological Society's Collection. 

 (j. Skull : veiy young. From Mr. Stevens's sale. 



The Little or Liberiax Hippopotamus. 



Hippopotamus (Tetraprotodon) liberianus. 



Morton, Journ. Acad. Nat. Sci. Philad. i., new series, 1849; Proc. 

 Acad. Philad. 1844, pi. 32 (skull), pi. 33. figs. , pi. 34. figs. 3-9 

 (dentition). 



a. Plaster cast of skull. Presented by S. G. Morton, Esq. 



