. [Collected reprints, 1912-1919. Mammals; Mammals; Birds. Order CHIROPTERA. BATS. The order is divided into two suborders: the Megachiroptera or Fruit-eating Bats, containing the Old World family Pteropodidm, or so- called Flying Foxes; and the Microchiroptera, which includes the rest of the Bats and is the only one represented in North America. Bats are flying mammals, being supplied with a leathery membrane supported by enormously elongated fingers and attached to the hind legs and sides of the body, which serves as a wing. In addition to the four elong- ated fingers supporting the wing mem

- Image ID: RDX5TX
. [Collected reprints, 1912-1919. Mammals; Mammals; Birds. Order CHIROPTERA. BATS. The order is divided into two suborders: the Megachiroptera or Fruit-eating Bats, containing the Old World family Pteropodidm, or so- called Flying Foxes; and the Microchiroptera, which includes the rest of the Bats and is the only one represented in North America. Bats are flying mammals, being supplied with a leathery membrane supported by enormously elongated fingers and attached to the hind legs and sides of the body, which serves as a wing. In addition to the four elong- ated fingers supporting the wing mem
The Book Worm / Alamy Stock Photo
Image ID: RDX5TX
. [Collected reprints, 1912-1919. Mammals; Mammals; Birds. Order CHIROPTERA. BATS. The order is divided into two suborders: the Megachiroptera or Fruit-eating Bats, containing the Old World family Pteropodidm, or so- called Flying Foxes; and the Microchiroptera, which includes the rest of the Bats and is the only one represented in North America. Bats are flying mammals, being supplied with a leathery membrane supported by enormously elongated fingers and attached to the hind legs and sides of the body, which serves as a wing. In addition to the four elong- ated fingers supporting the wing mem- brane, there is a detached thumb or pollex, which projects from the upper margin and is provided with a hooked claw. From the inner side of the ankle joint projects a cartilaginous process called the calcar, which supports a portion of the membrane joining the legs and tail known as the interfemoral membrane. Another noticeable character in Bats belonging to the suborder Microchirop- tera is the highly developed tragus, a process arising within the conch of the ear, which varies in shape and size in many species, and is often of diagnostic value. Noticeable peculiarities in the myology of these animals are found in the presence oi a muscle, known as the occipito- pollicalis, extending from the occipital bone to the terminal phalanx of the pollex and in the divided sections of the platysma. Other important characters are: radius long and curved; ulna rudimentary; knee bend- ing backward (owing to connection with the wing membrane); fibula rudimentary; mammae thoracic; placenta discoidal and deciduate; testes abdominal or inguinal; cerebral hemispheres smooth and not extending backward over the cerebellum; presternum with noticeable "keel"; dental series including incisors, canines, premolars and molars; the number of teeth variable, but never more than 38; milk teeth unlike those of the permanent series. All Bats belonging to the sub- order Microchiroptera have the c

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