NO. 17 UNGULATES AND PRIMATES FROM AFRICA HELLER 7 



describer is indebted for much assistance during his stay on Mount 

 Uaragess. 



COLOBUS ABYSSINICUS TERRESTRIS, new subspecies 

 Lado Colobus Monkey 



Type from Rhino Camp, Lado Enclave; adult female, Cat. No. 

 164756, U. S. Nat. Mus. ; shot by Kermit Roosevelt, January 20, 

 1910; original number (Heller) 623. 



Characters. — Differs from the other races of Colobus abyssinicus 

 by the reduced amount of white in the mantel and the great length of 

 the tail. It approaches most closely in coloration to matschiei or 

 occidentals but has decidedly less white in the mantel covering the 

 sides and the rump. The white tail tuft is limited to the terminal 

 one-fourth, the rest of the tail being covered by short black hair. 

 White of tail tuft and mantel much shorter haired than in matschiei. 

 Tail greatly exceeding head and body in length. Skull smaller than 

 matschiei. 



Measurements of the type in the flesh: head and body, 540 mm.; 

 tail, 775; hindfoot, 158; ear, 30. In an adult female of matschiei 

 the tail is only 655. The skull of the type is old and has a well- 

 marked sagittal crest on the occipital region: greatest length, 102; 

 basilar length, 75 ; zygomatic breadth, y2 ; post orbital constriction, 

 42.5; median length of nasals, 11 ; upper molar series, 29; width of 

 palate at last molar, 20. 



The type is the only specimen in the National Museum. Small 

 troupes of this race were seen by Kermit Roosevelt near the banks 

 of the Nile, but were not observed by other members of the expedi- 

 tion. They were found in small scattered acacia trees which they 

 deserted when hard pressed and ran across country to the next 

 nearest grove in the manner of baboons. The Colobus monkeys of 

 the highlands of East Africa have quite different habits and live in 

 dense forests where they move about through the trees by leaping 

 from one branch to another and descend to the ground rarely to 

 escape an enemy. They are not known to inhabit 'acacia trees. 



LASIOPYGA LEUCAMPAX MAU^, new subspecies 



Mau Forest Monkey 



Type from the summit of the Mau Escarpment between Londiani 

 and Sirgoit, British East Africa, adult male, Cat. No. 173002, U. S. 

 Nat. Mus.; collected by John Jay White, November 1, 1910. 



