. Cassell's natural history. Animals; Animal behavior. THE STRIPED SACK-WINGED BAT. oi Fu CrVIER'S A curious little South American Bat, described by F. Cuvier under the i of interest to the zoologist as one of the links between the two gi'eat groujjs of Microchii'optera. It is remarkable for the form of its muzzle, which is somewhat Pig-like, cut oft' and turned up at the extremity, and bristling all over with haii-s. The tragus is m the form of a barbed aiTow-head ; and the thumb is exceedingly short, and entii-ely enclosed within the membrane, only the claw beiug left free. The canine
. Cassell's natural history. Animals; Animal behavior. THE STRIPED SACK-WINGED BAT. oi Fu CrVIER'S A curious little South American Bat, described by F. Cuvier under the i of interest to the zoologist as one of the links between the two gi'eat groujjs of Microchii'optera. It is remarkable for the form of its muzzle, which is somewhat Pig-like, cut oft' and turned up at the extremity, and bristling all over with haii-s. The tragus is m the form of a barbed aiTow-head ; and the thumb is exceedingly short, and entii-ely enclosed within the membrane, only the claw beiug left free. The canine teeth in the upper jaw ai-e very peculiar, showing four points. This Bat is only about an inch and a haJf long. Its eyes are large and promi- nent, its nostiils surrounded by slightly-raLsed borders, and its chin bears eight white warts, seven running round the lip, whUe the eighth stands in the centre. The fiu- is soft, thick, and black. A second species of the genus, also from South America, is described by Mr. Tomes under the name of Fxirip- terns ccerulescens. Its fur is of a slaty blue tint. THE STRIPED 'K-WINGED The genus .Sarcoplcri/x is readily distinguished from all others by the existence in the membrane in front of the arm (the shoulder membrane or ante- brachial membrane) of a singular sac or jiouch, which is situated on the lower surface of the mem- brane near the elbow, and opens at the upper siu-face in a corre- sponding position. X This sac is not peculiar to the males, but occurs in both sexes. Tliere are in the upper jaw only two incisor teeth, which are small and separated by an interval from each other and from the canines (see figure above). The lower jaw has six incisoi's in a close row. Tlie canines are strong and sharp, especially the upper ones; the first premolar is small, the second larger and acute, and the three true molars are large and strongly tubercular. The eai-s are of moderate size, and furnished with well-developed ti-agi. The inte
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