368 MAMMALIA OF INDIA. 
borders, or portions of the upper jaw in which the grinding teeth 
are inserted. 
The following synopsis of the sub-order is given by Mr. Alston :— 
Incisors 4; at birth >; the outer upper incisor soon lost; the next 
pair very small, placed 
directly behind the large 
middle pair ; their enamel 
continuous round the 
tooth, but much thinner 
behind; skull with the 
optic foramina confluent, 
with no true alisphenoid 
canal ; incisive foramina 
usually confluent; bony 
palate reduced to a bridge 
between the alveolar bor- 
ders ; fibula anchylosed to 
tibia below, and articula- 
ting with the calcaneum ; 
testes permanently exter- 
nal ; no vescicular glands. 
Dentition of Hare. Two families.” —‘ P. Z. S.’ 
is 1876, p. 97- 
There are only two families each of one existing genus—LEPORIDA, 
genus Lepus, the Hare; and Lacomyip&, genus JLagomys, the Pika, or 
Mouse-Hare, as Jerdon calls it. There are three fossil genera in the 
first family, viz. Paleolagus, a fossil hare found in the Miocene of 
Dacota and Colorado, Panolax from the Pliocene marls of Santa Fe, 
and Praotherium from Pennsylvanian bone-caves. A fossil Lagomys, 
genus Z7/anomys, is found in the Post-Pliocene deposits in various parts 
of Europe, chiefly in the south. 
FAMILY, LEPORIDAX—THE HARES. 
‘Three premolars above and two below; molars.rootless, with trans- 
verse enamel folds dividing them into lobes; skull compressed ; frontals 
with large wing-shaped post-orbital processes; facial portion of maxil- 
laries minutely reticulated ; basisphenoid with a median perforation, and 
separated by a fissure from the vomer ; coronoid process represented by 
a thin ridge of bone; clavicles imperfect ; ears and hind-limbs elongated, 
tail short, bushy, recurved. ”— Alston, 
Hares are found all over the world except in Australasia. The Rabbit 
is much more localised ; ;in India we have none, unless the Hispid Hare, 
