GERBIL, or Gerbille, the name of a group of small, elegant, large-eyed, jumping rodents typified by the North African Gerbillus aegyptiacus (or gerbilles), and forming a special subfamily, Gerbillinae, of the rat tribe or Muridae.
The second genus, Heliosciurus, includes arboreal African squirrels, typified by H.
It follows that the subfamily typified by this species, in which are included the gazelles, is the one to which alone the term antelopes should be applied if it were employed in a restricted and definable sense.
The other ideal, typified by the South Australian party, differs from this in one important respect.
The establishment, in 1671 and 1676 respectively, of the French and English national observatories at once typified and stimulated progress.
Another group is Pronolagus, typified by the Cape thick-tailed hare, the so-called Lepus crassicaudatus, which is externally similar to Lepus proper, but has the skull and teeth of the general type of the next group. The tailless rabbit of Mount Popocatepetl, Mexico, originally described as a distinct generic type, under the name of Romerolagus nelsoni, is broadly distinguished by the entire absence of the tail, and the short ears and hind-feet, its general form being like that of the Liu-Kiu rabbit, while, as in the latter, the post-orbital process of the skull is small, and represented only by the hinder half.
The group is typified by the European hamster (Cricetus vulgaris or C. cricetus), to which a separate article is devoted (see Hamster); the genus includes a number of species ranged under several sub-genera, such as Mesocricetus, Cricetulus, and Urocricetus, widely spread in Western and Central Asia, the last-mentioned, which is from Tibet, being distinguished by its relatively long tail.
A third genus, Eupetaurus, typified by a very large, long-haired, dark-grey species from the mountains to the northwest of Kashmir (Eu.
This monkey is a leaf-eater, nearly allied to the langurs, as typified by the sacred ape of India.
The second group, which is mainly African, but also represented in Syria, is that of the Hippotraginae, typified by the sable antelope (Hip potragus niger) and roan antelope (H.