species and Subspecies of Mammals. 189 



upper molar series 13 ; length of mandible 21 ; lengtli of 

 lower molar series 13. 



The type and an example in alcohol from Zomba, Njasa- 

 landj are the only representatives of this species in the 

 collection. 



B.M. no. of type 64. 12. 10. 15. 



While perhaps this species resembles O.gallarum in colour 

 more than any other, the skull, in its long and narrow rostrum 

 and low crown, is very diflferent. Tiie type was procured by 

 Dr. Kirk, when he was accompanying Dr. Livingstone, the 

 famous African explorer. 



Subgenus Hemigalago. 

 Galugo Thomasi, sp. n. 



Type locality. Fort Benin, Semliki River, Central Africa, 



Gen. char. Larger than G. Demidoffi ; colour quite 

 different. Skull much larger; differently shaped brain- 

 case, much broader in occipital region and higher over roots 

 of zygomata ; teeth much larger. 



Colour. Head and upperparts drab, washed with Mars 

 brown on head and dorsal region ; stripe between eyes and 

 nose yellowish white; outer side of limbs drab; underparts 

 and inner side of limbs buff; tail Mars brown. 



Ateasurements. Total length 347 mm.; tail 210; hind 

 foot .58 ; ear 28. Skull : occipito-nasal length 40 ; hensel 2% ; 

 zygomatic width 25 ; intertemporal width 16 ; palatal 

 length 14; breadth of brain-case 21; length of nasals 12; 

 length of upper molar series 11 ; length of mandible 22 j 

 len;^th of lower molar series 11. 



B.M. no. of type 6. 12. 4. b>i. 



This, the fourth member of the subgenus Hemigalarjo, 

 differs from all the others in colour and dimensions, being the 

 largest of all, and cannot well be compared with or mistaken 

 for any of them. The skull shows many and great differences 

 from those of the other species. The type was procured on 

 the boundary-line of Uganda and the Co.igo Free State, and 

 a second and somewhat darker specimen at Dumo, Uganda. 

 Whether it penetrates farther into the Cjngo Region or is 

 confined to Uganda is unknown. 



Family Cebidae. 



Genus AOTUS. 



Aotus holiviensis, sp. n. 



Type locality. Province of Sara, Central Bolivia. 



Gen. char. Similar in colour to A. Azarce, but cranial 



