. A manual of zoology. 542 MANUAL OF ZOOLOGY sect. enclosing the tail; the fore- and hind-feet are both webbed, and the tail is prehensile. The hedgehog (Erinaceus) has the surface beset with pointed spines. The moles (Talpa) and their allies, which are active burrowers, have the limbs very short and stout and provided with extremely strong claws. The jumping shrews {Macrosceledidm) have slender limbs adapted to progressing by leaps on the surface of the ground. The Chiroptera (Fig. 327) are the only mammals which are capable of active flight. The fore-limbs have the seg-. Fig. 327. — Bat (Syn
. A manual of zoology. 542 MANUAL OF ZOOLOGY sect. enclosing the tail; the fore- and hind-feet are both webbed, and the tail is prehensile. The hedgehog (Erinaceus) has the surface beset with pointed spines. The moles (Talpa) and their allies, which are active burrowers, have the limbs very short and stout and provided with extremely strong claws. The jumping shrews {Macrosceledidm) have slender limbs adapted to progressing by leaps on the surface of the ground. The Chiroptera (Fig. 327) are the only mammals which are capable of active flight. The fore-limbs have the seg-. Fig. 327. — Bat (Synotus barbastellus). (After Vogt and Specht.) ments greatly elongated, especially the fore-arm and the four ulnar digits, and these support a thin fold of the integu- ment which stretches to the hind-limbs and constitutes the wing. A fold also extends between the hind-limbs and may or may not involve the tail. The pollex is much shorter than the other digits, directed forwards, and terminates in a well-developed curved claw ; in the Megachiroptera, but not in the Microchiroptera, the second digit also has a claw; the other digits are always clawless. The position of the hind- limbs is peculiar, and the knee is directed backwards instead. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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