Zoological Society. 415 



C. mergens. C. Maxwellii. 



C. coronatus. C. monticola. 



C. silvicultrix. C. punctulatus. 



C. Ogilbii. C. grimmia. 



C. Natalensis. C. Whitfieldii. 



C. rvfilatus. 

 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 two 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. 



Eleotragus. 



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. adenota. 



E. isabellinus. E. sing-sing. 



E. capreolus. E. ellipsiprymnus. 



E. arundinaceus. E. lecM. 



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 Kolus, 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- 

 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, 



