348 CATALOGUE OF UNGULATES 



58. 5. 4. 43 (718, 70- Skull. 



Purchased (Zoolor/ical Society), 1858. 



59. 8. 16. 4 (718, /.■). Skull. " Borneo " = (?) Boru. 



Purchased {Wright), 1859. 

 67. 4. 12. 209. Skull, young. Figured in Gray's Hand- 

 Lid, pi. xxvii, fig. 1. 



Lidth de Jcnde Collection, purchased, 1867. 

 67. 4. 12. 221 (718, o). Skull. Sccme history. 



67. 4. 12. 222 (718, jj). Skull. Same history. 



67. 4. 12. 223 (718, q). Skull. Figured in Seba's The- 

 saurus, vol. i, pi. ii, fig. 3, 1734. Same history. 



III. Genus POTAMOCHCERUS. 



Koiropotamus, Gray, List Mamm. Brit. Miis. p. xxvii, 1843, nomen 

 nudum. 



Choiropotamus, Gray, List. Mamm. Brit. Mus. p. 185, 1843, Ann. 

 Mag. Nat. Hist. ser. 2, vol. x, p. 282, 1852 ; vcc Choeropotamus, 

 Cuvier, 1822. 



Potamochcerus, Gray, Proc. Zoot. Soc. 1852, p. 129, 1854, Ann. Mag. 

 Nat. Hist. ser. 2, vol. xv, p. 65, 1855, ser. 4, vol. xi, p. 434, 1873, 

 Cat. Carnivora, etc. Brit. Mus. p. 340, 1869, Hand List Tliicl-- 

 shinned Mamm. Brit. Mus. p. 56, 1873; Major, Proc. Zool. Soc. 

 1897, p. 359 ; SfeJilin, Al>h. schwciz. 2^at. Ges. vol. xxvi, p. 70, 

 1899; ir. L. Sctater, Fauna S. Africa, Mamm. vol. i, p. 273, 

 1900. 



Nyctochoerus, Heugtin, Nova Acta Ac. d.es. Leop.-Car. vol. xxx, 

 Nachtrag 2, p. 7, 1863. 



Dentition : i. |, c. -]-, p. 4, m. |- = 42 ; teeth of the same 

 general character as in Sus, but the canines (the summits of 

 the upper pair of which are completely abraded by the lower 

 ones) smaller and the molars of a relatively simple type, 

 with thick enamel ; in adult male skulls (fig. 52) a bony 

 tuberosity or ridge above the root of the upper canine and a 

 second on the sheath of the same, the upper ridge in aged 

 individuals developing a horny capsule ; ears with terminal 

 tufts of long hairs ; coat more abundant, less bristly, and 

 frequently much more brightly coloured than in Sus. Young 

 striped. 



The thickness of the enamel of the molars, coupled with 

 their simple structure, suggests affinity with Sus celehensis 

 and >S'. verrucosus. 



