2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6l 



of stiff buffy brown tufts of hair placed at regular intervals apart 

 like the bristles of a clothes brush. 



Measurements. — The flesh measurements of the type were: head 

 and body, 3,710 mm.; tail, 510; hindfoot, 550; ear, 95. Skull: 

 condylo-basal length, 720; zygomatic width. 442; rostral constric- 

 tion, 138; nasals, 415 by 48; orbit, 60 by 80; height of orbital rim 

 above median interorbital region, 42; width of crown of M 2 , 46; 

 length of upper tooth row including PM ', 255 ; length of mandibular 

 symphysis, 203 ; height from angular to coronoid process, 380 ; cir- 

 cumference of lower canine, 173; length of lower canine beyond 

 alveola, 255. 



Remarks. — A series of eight skulls and four skins from Lake 

 Naivasha in the National Museum show wide nasal bones, ranging 

 in least width from 40-49 mm. as against 27-38 for the Nile and 

 29-32 for the Zambesi skulls. Naivasha skins compared with two 

 skins from the Zambesi are much lighter in color and heavier haired 

 on the inside of the ears and tip of the tail. The Zambesi skins 

 (tanned) are olivaceous-black on the upper parts and dark-olive 

 gray on the lower with the hair on the muzzel buff in color. A large 

 number of Hippopotamus skulls have been examined and measured, 

 some sixty-five in all, from the Nile, Zambesi, Lake Ngami, Congo 

 Basin, Gambia, Liberia, Angola, and Abyssinia in the British, Ber- 

 lin, Congo and several American museums, including the eighteen 

 in the National Museum. The measurements of this large series 

 of skulls have been available for comparison with the Lake Naivasha 

 material upon which the present race is based. A specimen from 

 the Athi River in the National Museum agrees with the Naivasha 

 skulls in proportions and shape. The range of kiboko doubtless 

 extends from the Rift Valley eastward to the sea coast. The hippo- 

 potamus in British East Africa is familiarly known among the 

 European residents by its Swahili name, kiboko. 



PHACOCHOERUS AFRICANUS BUFO, new subspecies 



Nile Warthog 



Type from Rhino Camp, Lado Enclave, Egyptian Sudan ; imma- 

 ture female skull, Cat. No. 164796, U. S. Nat. Mus. ; collected by 

 Edmund Heller, Jan. 25, 1910; original number, 617. 



Characters. — Phacocheerus africanus bufo differs from aliani of 

 Abysssinia and East Africa by the greater breadth and length of the 

 post-orbital or parietal portion of the skull, the flatter interorbital 

 region and the greater length of the premaxillae beyond the bases 

 of the tusks. Other minor differences from ccliani are the absence 



