TIEE SELOUS COLLECTTOX. 85 



''r3'i)ical locality, Somaliland ; range extends westward as far as 

 tlie Tana liiver and valley of the Northern Gruaso Nyiro. To the 

 north of the Northern Gruaso Nyh-o this Khinoeeros inhabits the 

 area to the east of Lake Rudolf ; it is also found in certain parts 

 of Southern Abyssinia. 



439 —19.7.15.519. 1912 (sex not recorded). Northern Guaso 



Nyiro, Kenya Colony. Length of front horn on outside 

 cui've 24^ ; circumference at base 17 ; length of rear horn 

 on side 22^ ; circumference at base 17^. 



440 —19. 7.15.520 (sex not recorded). Horns. 1912. Northern 



Guaso Nyiro, Kenya Colony. Length of front horn on out- 

 side curve 21 ; circumference at base 16 ; length of rear 

 horn on side 14 ; circumference at base 16^. 



SOUTH AFKICAN WHITE, OR SQUAKE-MOUTHED 

 RHINOCEROS. 



Rhinoceeos (Dicekos) simus simus. 



Rhinoceros simus, Biu'chell, Bull. Soc. Philom. 1817, p. 97 ; Travels in 



S. Africa, vol. ii. p. 75, 1824. 

 Ceratotheriutri simuni; Gray, Proc. Zool. Soc. 1SG7, p. 1027 ; Cat. 



Carnivora, etc., Brit. Mus. p. 319, 18G9 ; Hand-List Thi^k- skinned 



Mamm. Brit. Mus. p. 52, 1873. 

 Diceros simus, Thomas, Nature, vol. Ixii. p. 599, 1900 ; Proc. Zool. Soc. 



1901, vol. ii. p. 158. 

 Bhiiioceros {Diceros) sitrms, Ward, iiecords of Big Game, ed. 6, p. 473, 



1910, ed. 7, p. 472, 1914 ; Lydekker, Cat. Ungulate Mamm. Brit. Mus. 



vol. V. p. 55, 1916. 

 Rhinoceros simus simus, Lydekker, Cat. Ungulate Mamm. Brit. Mus. 



vol. V. p. 56, 1916. 



Size rather larger than in bicornis with much larger head ; 

 skull very long with posterior part prolonged backward wx'll 

 beyond the condyles. First premolar not persistent, the adult 

 number of cheek-teeth being seven. Front horn with square base. 

 Upper lip broad and square. Prominent tlesliy hump on nai:)e of 

 neck. Ears considerably larger than in bicornis. Greneral colour 

 rather lighter than in the Black species. The typical White 

 Rhinoceros of South Africa is very closely allied to the Nile race 



