244 MR. p. L. SCLATEB ON" THE [Mar. 14, 



Species. 

 Sect. B. Chloronoti. 



Above olive-green ; beneath white 10-15 



Sect. C. Erythronoti. 



Above rufous ; beneath white 16, 17 



Sect. D. Alelanochiri. 



Arms, hands, and feet black 18-26 



Sect. E. Auriculati. 



Ears \\ith long tufts 27-29 



Sect. E. Barhati. 



With a long pointed white beard 30, 31 



Sect. A. Cercojntheci rhinosticti. 



The nine species of the " spot-nosed " group with which I am 

 acquainted may be diagnosed as follows : — 



A. Naso piloso, albo. 



a. Pectore albo. 



a'. Cauda non rufescente. 



a". Brachiis cinereis. 



a'". Geiiis albis. 



r Capita nigro cincto 1. jyetaiirista. 



\ Capite post, un icolore , . . . . 2. buettikoferi. 



b'". Genis olivaceis 3. martini. 



b". Bi-achiis nigris 4. ludio. 



b'. Cauda rufescente. 



fG-enis anguste nigris 6. melanogenys. 



\ Genis late nigris 6. schmidti. 



b. Pectore cinereo 7. nictitans. 



B. Naso piloso, rubro 8. erythrotis. 



C. Naso semi-nudo, ca3ruIeo 9. ceplius. 



1. Ceecopithecits PETAUEISTA. 



Simia jyetaurista, Schreb. Saug. i. p. 103, t. xix. B (1775). 



Cercopithecus petaurista, Erxl. Sj^st. Eeg. An. p. 35 (1777) ; 

 Martin, M. An. p. 539 ; Geoffr. Diet. univ. d'Hist. nat. iii. p. 301 \ 

 Wagn. Siiug. Suppl. v. p. 50 (1855) ; Gray, P. Z. S. 18G8, p. 182 ; 

 id. Cat. Mouk. B. M. p. 20 (1870) ; Schleg. Mus. P.-B. vii. p. 86 

 (1876) ; Scl. List Vert. (1883) p. 13. 



Ascagne (Cei-c. ascanius), E. Cuv. Mamm. i. pi. 18(?). 



Hob. Gold Coast {Mus. Lvx/d.). 



This is one of the commonest of the CercopiiJieci in captivity. 

 We have always examples of it living in the Gardens. The black 

 line which passes above the ears and borders the crown behind 

 serves to distinguish this species from all its allies. The sharply 

 defined white of the lower surface of the tail is another peculiar 

 character of C. petaurista. 



2. Ceecopithectjs exjettikofeei. 



Cercopithecus huttikoferi, Jentink, Notes Leyd. Mus. viii p 56 

 (1886). 



Hah. Liberia (Bilttikofer). 



This species, described from specimens in the Leyden Museum, 



