4168 PROF. ST.-GEORGE MIVART ON THE &LUROIDEA. [June 6, 
Crossarchus, where it may be only imperfectly enclosed by bony pro- 
cesses). It may be entirely absent, as in the Felide, Galidictine, 
Euplerine, and Hyenide. 
It may occasionally be present where it is normally absent, as in 
Viverricula. 
There may be no carotid canal (for the internal carotid artery), as 
in the Felide; or there may be a distinct canal, as in all other 
Aluroids. The hinder aperture of this canal may be placed at 
about the middle of the internal margin of the auditory bulla, as 
in the Viverrine, or rather more forwards, as in the Hyenide. 
The artery may enter the cranial cavity through an aperture con- 
cealed, or almost concealed, beneath the anterior end of the auditory 
bulla, as generally in the Viverrine ; or it may enter through a very 
conspicuous foramen anterior to and within the bulla, as in the 
Herpestine and Galidictine. This foramen notches the sphenoid 
very deeply, so much as to seem sometimes even to perforate it. 
The condyloid foramen may be exposed or concealed ; and there 
may be considerable variation in this respect in different individuals 
of the same species. 
The palatine foramina may be in the posterior third, or well 
within the posterior half, of the palate, as always in the Felide; or 
they may be well within the anterior half of the palate, and often 
within its anterior third, as in all non-feline /luroids. In Crypto- 
procta they are very near the hinder end of the anterior half. In 
Cynogale they are very far forwards, only a little behind the incisive 
foramina. 
The upper alveolar border may be notched to receive the apex of 
a lower premolar, as in Hemigalea. 
The mandible may have its angle extending backwards almost or 
quite on a line with the inferior margin of the horizontal ramus, as 
in most Felide. It may, on the other hand, be very much bent 
up towards the condyle, as in Hyena. It may be singularly 
flattened beneath, as in Proteles. It may be very small, as in 
Arctictis, or everted (or bent in the opposite way to that in which 
it is bent in Marsupials), as in Suricata. 
The hinder portion of the inferior margin of the horizontal ramus 
may be very concave, as in many Viverrine. 
The coronoid process may be greatly elevated, yet inclining back- 
wards towards its apex, as in the Felide. It may be elevated 
vertically, and more or less truncated at its summit, as in Prionodon. 
It may be raised but little, relatively, above the condyle, as in many 
Viverrine. 
The symphysisis generally moderate, but may be greatly prolonged, 
as in Galidictis, where its proportional length to that of the mandible, 
from the front of the canine to the hinder end of the last molar, is 
as 62°9 to 100. 
The alveolar border may be singularly everted towards its hinder 
end, as in Arctogale. 
