168 
G. subgutturosa. 
G. Sceemmeringit. 
G. dorcas. 
G. Bennettii. Of these spe- 
cies I have 
G. euchore. ree Alls G. mhorr. 
G. gutturosa. ; G. colus. 
G. kemas. 
Several of the so-called species that are closely allied in size and 
colour to G. Dorcas, appear to me to be merely varieties, as some of 
them have been considered by the older naturalists. 
This genus seems prone to exhibit in certain species inhabiting 
more temperate regions, enlargements of, or appendages to, the re- 
spiratory passages ; for example, the enlarged larynx of G. gutturosa, 
the elevated nose of G. colus, and the appendages to its sides in the 
Chiru (G. kemas) ; these seem to be physiological adaptations, in no 
case marking a group, and therefore insufficient to warrant generic 
distinction, which has been made in the two latter instances. How- 
ever, not having as yet seen entire skulls of these species, I retain 
them provisionally in this genus, judging by the horns. I think few 
naturalists will set forth, with Mr. Gray, the colour of the horns of 
the Saiga as a generic character. Even in the G. Bennettii, so closely 
allied to G. dorcas, Mr. Hodgson states that the suborbital sinus is 
wanting, and he places the animal in a distinct genus, T'ragops (after- 
wards altered to Tragomma), on account of this difference ; while 
Colonel Sykes, the original describer of the species, affirms that it 
exists, though of very small size. Mr. Hodgson also denies it to the 
Chiru, which forms his genus Panthelops, and to which he assigns 
only five molars in each series. 
CERVICAPRA. 
A small suborbital fissure, and a very large fossa; the tubercles 
and median groove of the basioccipital bone well-developed. The 
other cranial characters as in Gazella. 
Horns annulated, spirally twisted. 
Hab. India. 
C. bezoartica, 
The remainder of this group, if we exclude the Cephalophi and the 
four-horned Antelopes of India, consists of a number of small spe- 
cies, apparently nearly allied, forming the subgenera Tragulus and 
Neotragus of Major Hamilton Smith. These are very distinguish- 
able by the former having vertical, the latter recumbent horns; to 
the former, however, must be added the Ourebi (A. scoparia), from 
his subgenus Redunca (Eleotragus). Mr. Gray divides them into 
several genera, depending upon the presence or absence of inguinal 
pores and knee-tufts, the shape of the hoofs, the presence or absence 
and form of the “‘tear-bag,”’ the condition of the fur ; and one genus, 
founded upon two very young specimens, is characterized by the ab- 
sence of the lateral rudimental hoofs. Most of these characters I 
must decidedly reject ; and as I do not consider the evidence of dried 
skins quite satisfactory with regard to certain others, and have as yet 
