Deer are likewise numerous, and the peculiar group of chevrotains (Tragulus) is characteristic of the Indian region.
The third group is that represented by the chevrotains or mouse-deer, forming the family Tragulidae, with Tragulus in south-eastern Asia and Dorcatherium (or Hyomoschus) Tragullna.
The chevrotains of India and the Malay countries are unrepresented.
" larmier," or " crumen," of antelopes and deer, the frontal gland of the muntjak and of bats of the genus Phyllorhina, the chingland of the chevrotains and of Taphozous and certain other bats, the glandular patch behind the ear of the chamois and the reedbuck, the glands on the lower parts of the legs of most deer and a few antelopes (the position of which is indicated by tufts of long and often specially coloured hair), the interdigital foot-glands of goats, sheep, and many other ruminants, the temporal gland of elephants, the lateral glands of the musk-shrew, the gland on the back of the hyrax and the peccary (from the presence of which the latter animal takes the name Dicotyles), the gland on the tails of the members of the dog-tribe, the preputial glands of the muskdeer and beaver (both well known for the use made of their powerfully odorous secretion in perfumery), and also of the swine and hare, the anal glands of Carnivora, the perineal gland of the civet (also of commercial value), the caudal glands of the fox and goat, the gland on the wing-membrane of bats of the genus Saccopteryx, the post-digital gland of the rhinoceros, &c. Very generally these glands are common to both sexes, and it is in such cases that their function as a means of mutual recognition is most evident.
The Antilocapridae (prongbuck), whose relationships appear to be rather with the Cervidae than with the Bovidae, are on the other hand apparently a North American group. The chevrotains (Tragulidae), now surviving only in West and Central Africa and tropical Asia, are conversely a purely Old World group.
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