284 ELEPHANTID&,— HIPPOPOTAMUS. 
a. 
b. 
CG 
The Asuxoxo. Hyrax abyssinicus. 
Hyrax habessinicus, Kha koag A und Hemprich, Symb. Phys. Mamm. 
dec. i—Blainv., Ostéog. p. 1 
Skull. Abyssinia. cane o J. Reid, Esq. 
Skull. Abyssinia. Presented by J. Burton, Esq. 
Skull. Abyssinia. 
Hyrax ruficeps. 
Blainv., Ostéog. G. Hyrax, p. 10. pl. 2 (skull). 
The Daman. Hyrax syriacus. 
Blainy., Ostéog. G. Hyrax, pl. 1 (skeleton, female), pl. 2 (skull and 
dentition). 
Hyrax arboreus. 
Blainv., Ostéog. G. Hyrax, p. 10. pl. 2 (skull and teeth). 
Hyrax dorsalis. 
*q, Skull. Fernando Po. From the Zoological Society’s Collection. 
HIPPOPOTAMUS. 
Teeth :—Incisors 72; Canines 1; Premolars Molars = —;=40. 
SKS Aa oa 
aa ai = 
The ZrerKxor or River Horse. Hippopotamus amphibius. 
Grew, Mus. Reg. Soc. p. 14. tab. 1 (skull).—Spex, Cephalog. tab. 7. 
fig. 22 (skull).—Cur., Oss. Foss. i. p. 270. pl. 1. fig. 1 (skeleton), 
figs. 2-11 (vert.), pl. 2, figs. 1-4(skull), figs. 1-20 (parts of skeleton). 
—Punder und D’ Alton, Vergl. Osteol. pl. “5 (skeleton), pl. 6 ae 
1. 7 (feet and limbs).—Blair., Ostéog. G. Hippopotamus, pl. 1 
(estado, male), pl. 2 (skull). —Schreb., Saugth. vi. pl. 308 (skull). 
en F. Cuv., Dents des Mamm. p. 206, no, 84. figs. 1-3 
ntition 
teens Buff., Hist. Nat. xii. p. 68. pl. 6 (skull). 
. Skull: adult. 8. Africa. 
. The front of the lower jaw. 
Tusk, very much elongated. 
. Skull. Gambia. Presented by the Earl of Derby. 
Tusk. From Dr. Mantcll’s Collection. 
. Skull. From the Zoological Society’s Collection. 
. Skull: very young. From Mr. Stevens’s sale. 
The Lrrrir or Linertan Hirpopotamus. 
Hippopotamus (Tetraprotodon) liberianus. 
Morton, Journ, Acad. Nat. Sci. Philad. i., new series, 1849; Proc. 
Acad. Philad. 1844, pl. 32 (skull), pl. 33. figs.  , pl. 34. figs. 3-9 
(dentition), 
. Plaster cast of skull. Presented by 8. G. Morton, Esq. 
