Admixture of Mongolian species, such as Canis corsac, Felis manul, Spermophilus dauricus, the jerboa (Dipus jaculus), two hamsters (Cricetus songarus and C. furunculus), three new voles (Arvicolae), the Tolai hare, Ogotona hare (Lagomys ogotona), Aegocerus argali, Antilope gutturosa and Equus hemionus (jighitai).
HAMSTER, a European mammal of the order Rodentia, scientifically known as Cricetus frumentarius (or C. cicetus), and belonging to the mouse tribe, Muridae, in which it typifies the sub-family Cricetinae.
The essential characteristic of the Cricetines is to be found in the upper cheek-teeth, which (as shown in the figure of those of Cricetus in the article RODENTIA) have their cusps arranged in two longitudinal rows separated by a groove.
The peculiar odour evolved by many rodents is due to the secretions of special glands, which may open into the prepuce, as in Mus, Microtus and Cricetus, or into the rectum, as in Arctomys and Thryonomys, or into the passage common to both, as in the beaver, or into pouches opening near the vent, as in hares, agoutis and jerboas.
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.
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