171 
though Major Smith, judging by these parts alone, supposed them to 
belong to the lyrate type. The species does not appear among those 
mentioned in Mr. Gray’s paper in the ‘Annals and Magazine of Natu- 
ral History,’ but from the name and place assigned to the specimen 
in the British Museum, he appears to have evaded the difficulty by 
constituting it a genus of itself, which is placed near the genus Kolus, 
the genus Eleotragus (as in his paper) being far removed. The skull 
in the Museum, although the occiput is lost, bears full evidence of its 
real affinity. Among the interesting additions to South African zoo- 
logy discovered by those travellers who have visited the great lake re- 
cently discovered in that region, an undescribed species of Antelope*, 
of which a beautiful skin was recently brought before the Society, 
will perhaps assist the more sceptical in osteological characters in 
arriving at a just conclusion on this point, since, while it has the sta- 
ture and lengthened horns of the ellipsiprymnus, it has the brilliant 
colour and the external marks (particularly the dark stripe down the 
fore-leg) which characterise the smaller species. 
This genus does not seem to show any particular affinity for any 
of the rest, and forms a well-marked group, of which the species are 
scattered over various parts of Africa, and are mostly noted for their 
predilection for the vicinity of water. 
I here again adopt Mr. Gray’s generic name, to avoid the neces- 
sity of altering the name of one of the species, the L. reduncus. 
STREPSICEROS. 
The nasal opening of moderate size ; a suborbital fissure, but no 
fossa; the masseteric ridge not extending high; the auditory bulla 
swollen and prominent ; the basioccipital bone with its anterior and 
posterior pairs of tubercles well-developed, the former separated by a 
deep median groove ; the median incisors expanded at their summits ; 
the molars without supplemental lobes. 
Horns inclined backwards from the base, twisted, with one or more 
longitudinal angular ridges. 
Hab. Africa. 
S. cudu. S. Derbianus. 
S. euryceros. S. scriptus. 
S. Angasit. S. silvaticus. 
S. oreas. S. decula. 
The general aspect of the skull in this group reminds one a little 
of that of the Deer. The species all agree very closely, both in struc- 
ture of the skull, and in the direction, twisting, and ridges of the 
horns, the Coudou differing only in having the spiral wide and open, 
and in the horns being confined to the male, while the Eland is only 
a gigantic representation of the smaller species. S. euryceros, S. An- 
gasii, and a species most probably distinct from the rest, of which 
Capt. Allen brought a skull from the Bight of Biafra, show an inter- 
mediate condition of the horns; and in S. Angasii, at least, they are 
known to be wanting in the female. Major Smith himself has here 
¢ * Since named Kolus leché by Mr. Gray. 
