01 



The following is a key to the :\:\ mnnl>ere<l spe,eies of the 

 hen- recognised (some only pm\ isioimlly) : 



A. Horns (usually absent in female) directed upwards 



and backwards to form ;m obtuse angle with 



plane of face ; ears relatively long and pointed. ('. </riin>n,i, in- 



cluding C. Ivucoprosopua, of which 

 the right to diHtinction is not clear. 



B. Horns (usually present in female) directed back 



wards in piano of face; ears medium or short, 

 rounded. 



A'. Size large ; length of hind-foot (excluding 

 hoof) more than 11 inches, or 280 mm. ; 

 a.l length of skull exceeding 9J inches 

 (240 mm.). 



a. General colour blackish, with triangular 



black patch on loins .............................. C. sylvicultrix. 



b. General colour grey on body and black on 



head and neck .................................... C. jentinki. 



B'. Size medium or small ; length of hind-foot 

 (exclusive of hoof) not exceeding 10 J inches 

 (260 mm.) ; basal length of skull not more 

 than about 8J inches, or 220 mm. 

 A". Inguinal glands present. 



a. Hind-quarters transversely banded ......... C. doricK. 



b. Hind-quarters not transversely banded. 

 a 1 . Hair on part of nape directed forwards. 



a 2 . A black blaze on face. 



a 8 . Body-hair short and close ............ C. wcynsi. 



b 3 . Body-hair bicker and more woolly ; 



colour darker ........................ C.johnstoni. 



b*. No black on face ........................... C. brooJcei. 



a" 1 . Hair of nape directed uniformly back- 



wards. 



a 3 . Colour tawny, rufous, or chestnut. 

 a*. Colour uniform, no face-blaze. 



a 5 . Size larger .......................... C. spadix. 



b 6 . Size smaller ; length of hind-foot, 

 without hoof, 7$ inches (198 

 mm.). 

 a 6 . Some black in crest ............ C. natalensis. 



b n . Crest wholly red or orange ... C. centratis. 

 I >*. Dark markings on face or back, or 



on both. 

 a 7 . Darker markings shiny black or 



brown. 



a 8 . Back rufous, no dorsal stripe. 

 a 9 . Colour dark chestnut above 



and below ..................... C. nigrifrons. 



olour deeper and riolu-r. 

 a . ('hin white ................ C. rubiduB. 



6 10 . Chin dark .. C. cltwdi. 



