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Show 426 MR. O. THOMAS ON THE ANTELOPES [May 17, 2. Entirely absent in the only specimen available (not fully adult). No traces of horn-cores are to be seen on the skull, and probably the female is always without them. Skull broad and strong. Muzzle rather narrow. Anteorbital fossae rather shallow, their bottoms about 14 m m . apart in an adult male. Mesial notch of palate only about 4 or 5 m m . in advance of the lateral ones. Dimensions.- 3 . Height at withers 350; ear 50 ; hind foot 170. Skull (3)-basal length 120; greatest breadth 63; anterior edge of orbit to gnathion 69 ; nasals, length 47, breadth 24"5; muzzle 40'5 ; upper molar series 41-5. Hab. W. Africa. Gambia [Whitfield (Brit. Mus.)]; Sierra Leone [Sabine (Brit. Mus.)]; Liberia [Buttikofer (Leyd. Mus.)]; Fantee [Aubinn (Brit. Mus.)]; Dabocrom, Gold Coast [Pel (Leyd. Mus.)]. This species shows a certain tendency to the peculiar coloration of the rump characteristic of C. melanorheus ; the colour contrasts of black and white of the latter, however, are only in its case dark brown and light brown respectively. The entire absence of the horns in the female is a very important character, but merely on the evidence of a single specimen, and that one not fully adult, I hesitate to give it definitely as one of the characteristics of the species. 14. CEPHALOLOPHUS MELANORHEUS, Gray. Cephalophus melanorheus, Gray, Ann. Mag. N. H. (1) xviii. p. 167(1846). Cephalophus anchietce, Bocage, P. Z. S. 1878, p. 743. Similar in all respects to C. maxwelli, except that it is rather smaller, and that the brown colour of the back darkens to black on and at each side of the base of the tail, below which there is an abrupt change to white on the backs of the hams. Female with horns. Horns short, but almost as long in the female as in the male, placed in the same straight line as the nasal profile, slightly incurved:- 3 about 40 m m . long, basal diameter going about 2| times in the length. 2 about 30 or 35 m m . long, basal diameter going about 3 times in the length. Dimensions.-Height much as in next species. Ear 40 ; hind foot 155. Skull ( 3 )-basal length (c.) 116; greatest breadth 60 ; anterior edge of orbit to gnathion 63 ; nasals, length 44, breadth 23; muzzle 40 ; upper molar series 37. Hab. Southern half of West-African Forest-region from the Cameroons [Burton, Crossley (Brit. Mus.) ; Preuss fy Morgan (Berl. Mus. fide Matschie)] and Fernando Po [T. Thomson (Brit. Mus.)] to Angola [Anchieta (Lisb. Mus. fide Bocage)]. (No doubt also extending across the continent in the Equatorial Forest-region.) Island of Zanzibar [Kirk (Brit. Mus.)]. |
