170 
cheek ; the nasal bones expanded behind, reaching over a little way 
into the fossa. The other cranial characters as in Oreotragus. 
Horns placed far back, inclined backwards. 
Hab. Africa. 
C. mergens. 
C. coronatus. 
C. silvicultrix. 
C. Ogilbii. 
C. Natalensis. 
C. rufilatus. 
C. Maxwellii. 
C. monticola. 
C. punctulatus. 
C. grimmia. 
C. Whitjieldii. 
I have taken this list of species from Mr. Gray’s paper on the 
genus, published in the same volume of the ‘ Annals and Magazine 
of Natural History,’ omitting a few that seem to me likely to prove 
varieties, and adding two, which I find named in the Museum, and 
not included in his paper. I have only seen skulls of tw r o or three 
species, but no one will dispute the limits of this very distinct genus. 
Tetracerus. 
The nasal bones not expanded; the other cranial characters the 
same as in Cephalophus, with the addition of a second pair of horns 
of small size, placed over the orbits. 
Hab. India. 
T. quadricornis. T. subquadricornis. 
Eleqtragus. 
Nasal opening rather lengthened, the nasal processes of the inter¬ 
maxillary bones long, yet not always reaching the nasal bones ; a large 
infraorbital fissure, but no fossa ; the masseteric ridge ascending 
rather high ; the auditory bulla large and swollen; the basioccipital 
bone with its median groove and tubercles well-developed; the me¬ 
dian incisors expanded at their summits; a well-developed supple¬ 
mental lobe in the first true molar of each jaw, and usually more or 
less appearance of it in those behind. 
Horns inclining backwards and outwards, transversely wrinkled, 
gently curving upwards, and a little inwards towards the tip. 
Hab. Africa. 
E. reduncus. 
E. isabellinus. 
E. capreolus. 
E. arundinaceus. 
E. adenota. 
E. sing-sing. 
E. ellipsipryminus. 
E. leche. 
I have seen skulls of the four preceding the last-named. 
It is quite evident, both from the structure of the skull and horns, 
and from the general external appearance and markings, that the 
Antilope adenota of Major Smith, and certain large species forming 
Dr. Andrew Smith’s genus Kolas, belong truly to this form, and that 
in the latter case, at least, naturalists must have been deceived by 
mere dimensions. The similarity of character between the horns of 
the Adenota and those of the other species is very recognizable, al- 
