External Characters of Ruminant Artioductyla. 42 7 



are absent. In 1910 I assumed, from the analogy supplied 

 by G. maxwelli, G. melanorheus, and G. cequatoriaUs, that 

 Ogilby was wrong in this particular, and a fresh example 

 from South Africa, received in 1912, completely justified this 

 assumption. The glands in question are present on both fore 

 and hind feet, and resemble tolerably closely in structure 

 those of G. wquatorialis, which I described from dried feet. 



It may be recalled that in each of the three species of 

 Guevei described in 1910 the pedal glands differed to a 

 certain extent. In G. maxwelli the inner or proximal end of 

 the deep sack is dilated between the bones of the digits, so as 

 to reach almost from the posterior to the anterior integument 

 of the pasiern, the orifice of the narrower tubular portion 

 being somewhat expanded (fig. 92, p. 869). In G. cequatori- 

 alis and G. melanorheus (fig. 93, p. 871), on the contrary, 

 there is no inner or proximal dilatation of the sack. In 

 G. melanorheus, moreover, the lumen of the sack is almost 

 cylindrical in longitudinal section, the orifice being scarcely 

 expanded, whereas in G. equatorialis the sack expands 

 tolerably evenly from its proximal end to its orifice, which is 

 greatly dilated. The gland is similarly expanded in G.nion- 

 ticola, but it is relatively rather shorter than in G. cequatori- 

 alis and lias the walls less hairy. 



For the shape of the rhinarium in G. maxwelli see fig. C. 



Genus Cephalophus, H. Sm. 



Cephalophus dorsalis, Gray (p. 871). 



An adult male example from Obuassi in Ashanti agrees 

 in its characters with the description of the specimen from 

 Sekondi. 



The preorbital gland was of immense size and exuded 

 from its serially arranged pores a sugary sweet-smelling 

 secretion. 



The inguinal gland was set far out on each side close to 

 the knee-joint. From its thick-lipped orifice the sack ran 

 obliquely forwards and inwards for a couple of inches under 

 the flap of skin that ties the knee to the abdomen. The 

 secretion was brown and waxy, with a strong unpleasant 

 smell. 



The secretion of the pedal glands was like cream-cheese 

 in appearance and odour. 



The penis terminated in a downwardly bent expansion, 

 with the orifice of the urethra opening near the middle of its 



