External Characters of Ruminant Artiodactyla. \'.)\ 



Genus NOTOTRAGUS, Tliuinas & Schwann. 

 Nototragus melanotic, Thunb. (p. 182). 



I had not seen this species in 1910, but since that date two 

 examples — an immature female and an adult male — have 

 come into my hands. 



The pedal and preorbital glands were like those of 

 Raphicerus campestris described from dried skins in 1910 

 (pp. 879-880, fig. 98). According to Owen inguinal glands 

 are present, but there was no trace of them in either of the 

 two above-mentioned specimens. As in Ourebia, the whole 

 of the inguinal area, involving the penis, scrotum, and part 

 of the thighs, was bare, and the four teats were arranged in a 

 transverse line, as in Ourebia ourebi, with this difference, 

 that, whereas in the oribi the median, morphologically the 

 •posterior, mammae were much more widely separated from 

 each other than either was from the adjacent exterior (ante- 

 rior) mamma, in the grysbok the reverse was the case, the 

 two medians being closely juxtaposed. 



An interesting discovery in the case of the male was the 

 presence of a well-developed preputial gland recalling that of 

 Moschus (P. Z. S. 1916, p. 749, fig. G). Whether this gland 

 is present or not in Raphicerus and Ourebia has yet to be 

 ascertained. 



Genus Neothagus, H. Smith. 

 Neotragus pygmaius, Linn. 



In 1910 I was unable to give any particulars about the 

 cutaneous glands of the genus Neotragus ; nor does it appear 

 that any previous author has described them *. A young 

 female specimen from Accra, which died in the Gardens in 

 1912, was therefore of considerable interest. 



The preorbital gland was a circular area of considerable 

 size, rising slightly above the general level of the skin of the 

 face, and covered with very short hair. In the centre 

 of the glandular area there was a cluster of pores, from which 

 a gummy secretion without any particular odour could be 

 I ressed. But there was no invagination of the secreting 

 surface to form a pocket or reservoir for the substance. 



The rhinarium was large and moist, extending dorsally as 



* In 1910 (p. 807) I gave reasons for concluding that the antelopes 

 cited by Owen and Ogilby under the specific name j-ygtiueus belonged to 

 the genus Guerei of the subfamily Cephalophinse. 



