In Assam there is a small spiny hare (Caprolagus hispidus), with the habits of a rabbit; and an allied species (Nesolagus nitscheri) inhabits Sumatra, and a third (Pentalagus furnessi) the Liu-kiu Islands.
Blyth long ago proposed the name Caprolagus for the remarkable spiny rabbit of the western Himalayas, while the generic name Oryctolagus was suggested later for the rabbit, and Sylvilagus for the American "cotton-tails"; but none of these was accorded general acceptation.
In 1899 Dr Forsyth Major proposed a classification of the family in which a number of species were grouped with the spiny rabbit in the genus Caprolagus, whilst Oryctolagus was taken to include not only the common rabbit, but likewise the Cape hare.
Next come three remarkable rabbits from the Indo-Malay countries, all closely allied, although regarded as representing three generic groups, Nesolagus, Caprolagus and Pentalagus.
The spiny rabbit, separated from Lepus by Blyth in 1845 under the name of Caprolagus hispidus, is an inhabitant of Assam and the adjacent districts, and distinguished by its harsh, bristly fur and short ears and tail.