1907.'] MONKEYS OF THE GENUS CERCOPITHECUS. 745 



tinguished from the West- African specimens I have seen by the 

 following characters : — 



a. Nose black in advilt, some black hairs adjacent to the face on the 

 cheeks; red patch on the crown of the head not very sharply 

 defined ; shoulders iron-grey , Subsp. ^mtas. 



a'. Nose white in the adult ; hairs on cheeks adjacent to face also white ; 

 red patch on crown of head sharply ditferentiated and bordered 

 antero-laferally by a short black band extending upwards fronr the 

 superciliary band above the external angle of the eye ; shoulders less 

 noticeably "iron-grey Subsp. pyrrlionotus. 



Although the Society almost always has examples of this 

 species on exhibition, and there are a number of skins of old 

 and young individuals in the collection, they are mostly labelled 

 merely W. Africa,. The British Museum possesses practically no 

 material. Hence lack of properly localised skins makes it 

 impossible for me to contribute anything to our knowledge of 

 the geographical races of the species. 



Broadly speaking, C. patas with its subspecies is distributed 

 from Senegambia across N. Africa to the Upper Nile. It is, I 

 believe, an open countiy and not a forest form. 



For further information regarding this species and its local 

 forms, reference may be made to the recent paper by Dr. Matschie 

 which is cited in the appended list of names : — 

 jjaias { = ruber). References ns above. Senegal. 

 rnfa Schreber, Sang. Suppl. pi. xvi. B, 1801. Loc. ? 

 circuvicinctus Reichenbach, Aflfen, p. 123, 1863. Loc. ? 



Probably W. Africa. 

 sannio Thomas, Ann. Mag. Nat. Hist. (7) xvii. p. 173, Feb. 



1906. Go, Lake Chad. 

 zechi Matschie, SB. Ges. nat. Fr. Berlin, 1905, pt. 10, p. 274. 



Togoland . 

 kerstingi, id. loc. cit. Sokode and Fasan (Nigeria). 

 langheldi, id. op. cit. p. 275. Upper Benue, Cameroons. 

 pyrrhonotus Hempr. &. Ehrenb. Verli. Ges. nat. Fr. Berlin, i. 

 p. 407, 1829 ; iid. Symb. Phvs. pi. x. Le Nisnas, F. Cuv. 

 Hist. Nat. Mamm. i. pi. 27, "1830. Kordofan. 

 2}oUophceus Reich. Aften, p. 122, 1863 {= poliolophns Heuglin, 



Reise Nord-Afr. ii. p. 5, 1877). Fazoglo, Darfur. 

 baumstarki Matschie, op. cit. p. 273. Ikoma. 

 Dr. Matschie regards all these forms, with exception of C. p. 

 sannio, as species of the genus Erythrocehus. 



EXPLANATION OF THE PLATES. 

 Plate XXXIX. 



Fig. 1. Head of Cercopithecus leiicampyx nic/rigenis, subsp. nov. (p. 692). From 

 the skin of type specimen. 



2. Head of C. leticampyx stuJilmanni Matschie (p. 690). Prom the tj'pe 



specimen of C. otoleucus Scl., now living in the Society's Gardens. 



3. Head of C. koJbi Ithidei, subsp. nov. (p. 703.) From the skin of the type 



specimen. 



4. Head of specimen identified as C. albogularis albotorqnatus Pons. (p. 702) 



in the collection of the Society. 



5. Headof C.jHar^/ni Waterh.(i).698). From a skin in the collection of the Society. 



