. The animans and man; an elementary textbook of zoology and human physiology. arboreal members of which are the red squirrel (Sciurushudsonicus), the fox-squirrel (5. ludovicianus), and the grayor black squirrel (S. carolinensis). The little flying squirrel(Sciuropterus volans) is abundant in the Eastern shrews and moles (Insectivora).--The shrews 248 THE ANIMALS AND MAN and moles are all small carnivorous animals, which, be-cause of their size, confine their attacks chiefly to shrews are small and mouse-like; certain kinds ofthem lead a semi-aquatic life. There are nea
. The animans and man; an elementary textbook of zoology and human physiology. arboreal members of which are the red squirrel (Sciurushudsonicus), the fox-squirrel (5. ludovicianus), and the grayor black squirrel (S. carolinensis). The little flying squirrel(Sciuropterus volans) is abundant in the Eastern shrews and moles (Insectivora).--The shrews 248 THE ANIMALS AND MAN and moles are all small carnivorous animals, which, be-cause of their size, confine their attacks chiefly to shrews are small and mouse-like; certain kinds ofthem lead a semi-aquatic life. There are nearly a scoreof species in North America. Of the moles, of which there. FIG. 129. The hoary bat, Lasiurus cinereus. (Photograph from life,by J. O. Snyder.) are but few species, the common mole (Scalops aquaticus)is well known, while the star-nosed mole (Condylura cristata)is recognizable by the peculiar rosette of about twenty carti-laginous rays at the tip of its snout. Moles live undergroundand have the fore feet wide and shovel-like for European hedgehogs are members of this order. The bats (Chiroptera).--The bats (fig. 129), order Chi- THE VERTEBRATES: MAMMALS 249 roptera, differ from all other mammals in having the forelimbs modified for flight by the elongation of the forearmsand especially of four of the fingers, all of which are con-nected by a thin leathery membrane which includes alsothe hind feet and usually the tail. Bats are chiefly noc-turnal, hanging head downward by their hind claws incaves, hollow trees, or dark rooms through the day. Theyfeed chiefly on insects, although some foreign kinds liveon fruits. There are a dozen or
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