ORDER ARTIODACTYLA I EVEN-TOED UNGULATES 663 



Yellow-backed Duiker; Bush-goat. Cephalophe a dos jaune 

 (Fr.). Waldbock (Ger.) 



CEPHALOPHUS SYLVICULTRIX SYLVICULTRIX (Afzelius) 



Antilope Sylvicultrix Afzelius, Nova Acta Reg. Soc. Sci. Upsaliensis, vol. 7, 

 p. 265, 1815. ("Mountains of Sierra Leone and districts adjoining the 

 Sousso Rivers Pongas and Quia" [both rivers apparently in French 

 Guinea]; type locality restricted by Lydekker and Blaine (1914, vol. 2, 

 p. 64) to Sierra Leone.) 



SYNONYMS: Cephalophus thomasi Jentink (1901); C. sclateri Jentink (1901); 

 C. coxi Jentink (1906). 



FIGS.: Afzelius, op. cit., pi. 8, fig. 1; Gray, Gleanings Knowsley Menagerie, 

 pi. 23, fig. 3, 1850; Sclater and Thomas, 1895, vol. 1, pi. 13, pi. 14, fig. 2; 

 Bryden, 1899, pi. 6, fig. 1; Jentink, 1901, pis. 1-2; Lydekker, 1908, pi. 6, 

 fig. 1; Lydekker and Blaine, 1914, vol. 2, p. 65, fig. 10; Maydon, 1932, 

 pi. 128; Ward, 1935. p. 87, fig.; Spl. Publ. Am. Comm. Intern. Wild Life 

 Protection, no. 6, p. 25, fig., 1935. 



This Duiker, as a Class B species, is given partial protection 

 under the London Convention of 1933. It has a wide range, from 

 Angola and Northern Rhodesia at least to French Guinea, and, 

 despite serious persecution, seems to maintain itself in moderate 

 numbers. 



Form stout and heavy; general color all over, dark blackish 

 brown; crest of elongated hairs about base of horns, blackish in 

 front, reddish brown behind ; muzzle, chin, and ear tips whitish ; 

 a dorsal ornament extending from middle of the back to the tail; 

 anterior portion an elongated, brownish yellow triangle; posterior 

 portion a broad moon-shaped disk, grizzled with black and yellow- 

 ish hairs, and separated from the anterior portion by a black band. 

 Height of female at shoulder, 34 inches. Horns long and tapering, 

 rather bowed downwards terminally, those of female much smaller 

 than the male's; record length of latter, 7| inches. (Sclater and 

 Thomas, 1895, vol. 1, pp. 126-127; Jentink, 1901, pp. 180-184; Ward, 

 1935, p. 85.) 



Miss St. Leger (1936, p. 215) gives the range of C. s. sylvicultrix 

 as "Sierra Leone to Gaboon and Angola; Congo Forests to Ituri 

 Valley and North Rhodesia." The following report from Gambia 

 (E. Johnson, 1937, p. 64) perhaps requires verification: "This large 

 Duiker is rarely seen in the Gambia, a few specimens have been shot 

 in the small forest district on the south bank of the river. Protected 

 from 16th June to 31st December. A couple of hundred is the maxi- 

 mum existing in the Gambia now." 



The General Government of French West Africa (in litt., Novem- 

 ber, 1936) reports the species as occurring in French Guinea, the 

 Ivory Coast, and the bend of the Niger River. 



In Sierra Leone it occurs generally but is not common. There is no 



