268 CERCOCEBUS 



Young. All black ; shoulders and under parts with a reddish tinge. 



Measurements. Skull: total length, 116; occipito-nasal length, 

 99; Hensel, 81 ; intertemporal width, 45; zygomatic width, 73; palatal 

 length, 49 ; median length of nasals, 23 ; length of upper molar series, 

 27 ; length of mandible, 73 ; length of lower molar series, 33. 



The type of this species is a young animal and black all over, 

 similar to C. aterrimus which was also young. The type of this 

 form came from Stanley Falls, and the following description is taken 

 from it. 



Color. All black on head, body, limbs, hands, feet and tail ; 

 shoulders and under parts tinged with red. 



Measurements. Skull : total length, 108 ; occipito-nasal length, 

 94; Hensel, 74; zygomatic width, 73; intertemporal width, 49.4; palatal 

 length, 41 ; median length of nasals, 24 ; length of mandible, 64 ; length 

 of upper molar series, 27. 



Hair on head long, covering middle portion of the crown ; super- 

 ciliary fringe long; whiskers small, grayish, not concealing the ears; 

 eyelids dark. 



Sir Harry Johnston writing to Dr. Sclater about the specimen of 

 this Monkey from Lake Tanganyika (1. c.) states that, "this is the 

 history of the Black Monkey. He was brought from the country of 

 Barundi, at the north end of Tanganyika, by Rumaliza, the Arab who 

 has been fighting recently with the Belgians. Rumaliza gave it at 

 Ujiji to Mr. Swann, then in the service of the London Missionary 

 Society. Mr. Swann brought him down to the south end of Tangan- 

 yika and gave him to the Mission Station. The Missionary in charge 

 of the station subsequently hearing that I was collecting all sorts of 

 beasts sent him to me. I got him fetched down from Tanganyika to 

 Zomba, and thence as you know to England. He is undoubtedly a 

 native of the country at the north end of Lake Tanganyika; in other 

 words, of the north eastern border of the great forest region of West 

 Africa. Even there he would seem to have been rare, since he was 

 given by the natives to Rumaliza as a curiosity." 



A whitish monkey from Molinga, Lake Mweru, in the London 

 Zoological Gardens was named by Mr. Pocock (1. c.) jamrachi. This 

 is undoubtedly an albino, and its locality indicates that it would belong 

 to the eastern race of C. albigena, and the name therefore becomes 

 a synonym of C. a. johnstoni. Specimens of C. albigena and the 

 present race are rather scarce in collections, and it is unusual among 

 the Primates to find any species so prone to albinism as this one 



