Natural History of the Mammalia of India and Ceylon. Robert Armitage Sterndale

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Natural History of the Mammalia of India and Ceylon - Robert Armitage Sterndale

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formula: Inc., 4/4 or 4/2; can., 1—1/1—1; premolars, 2—2/3—3; molars, 2—2/2—2.

NO. 33. CYNOPTERUS MARGINATUSThe Small Fox-Bat (Jerdon's No. 14)

      NATIVE NAME.—Chamgadili, Hindi; Coteekan voulha, Singhalese.

      HABITAT.—India generally, and Ceylon.

      DESCRIPTION.—General colour fulvous olivaceous, paler beneath and with an ashy tinge; ears with a narrow margin of white (Jerdon.) A reddish smear on neck and shoulders of most specimens; membranes dusky brown. Females paler (Kellaart).

      SIZE.—Length, 4½ to 5½ inches; extent of wing, 17 to 20 inches.

      This bat is found all over India; it is frugivorous exclusively, though some of this sub-order are insectivorous. Blyth says he kept some for several weeks; they would take no notice of the buzz of an insect held to them, but are ravenous eaters of fruit, each devouring its own weight at a meal, voiding its food but little changed whilst slowly munching away; of guava it swallows the juice only. Blyth's prisoners were females, and after a time they attracted a male which hovered about them for some days, roosting near them in a dark staircase; he was also caught, with one of the females who had escaped and joined him. Dr. Dobson writes that in three hours one of these bats devoured twice its own weight. This species usually roosts in trees.

NO. 34. MACROGLOSSUS (PTEROPUS) MINIMUSThe Tenasserim Fox-Bat

      NATIVE NAME.—Lowo-assu (dog-bat), Javanese.

      HABITAT.—The Himalayas, Burmah, Tenasserim, and the Indian Archipelago.

      DESCRIPTION.—Ears half length of head, narrow and rounded at tip; face abruptly narrowed in front of eyes; muzzle long, narrow, cylindrical; lower jaw slightly projecting; eyes large; tongue very long, last third attenuated, covered with brush-like papillæ; interfemoral membrane very narrow, especially at root of tail; fur reddish brown, and very long.

      SIZE.—Head and body, 2-3/10 inches.

      Like other Pteropi this bat feeds on fruit of every description, but particularly attacks the various cultivated varieties of Eugenia (Jamoon).

GENUS EONYCTERIS

      Muzzle long and cylindrical; nostrils scarcely projecting; upper lip with a shallow vertical groove in front; index finger without a claw; thumb short; part of the terminal phalanx included in the wing membrane; metacarpal bone of the second finger equal to the index finger in length; tail short and distinct; the base contained in the narrow interfemoral membrane; tongue long, as in Macroglossus.

      Dentition: Inc., 4/4; can., 1—1/1—1; premolars, 2—2/2—2; molars, 3—3/3—3.

NO. 35. EONYCTERIS SPELÆA

      HABITAT.—Burmah.

      DESCRIPTION.—Head long; muzzle narrow, cylindrical, abruptly narrowed in front of the eyes; nostrils with an intervening emargination, which also passes down to the lips; tongue very long and pointed; ears conical, with rounded tips; body clothed with very short and thinly-spread fur of a uniform dark brown colour; the fur on the head extends only as far as the inner corners of the eye, leaving the rest of the face naked; tail half an inch. On each side, and a little behind the anal opening, are two small, kidney-shaped subcutaneous glandular bodies.

      SIZE.—Head and body, 4 inches; tail, ½ inch.

      Found in Farm Caves, Moulmein. The absence of the claw on the index finger is specially to be noted.

MICROCHIROPTERASUB-FAMILY VAMPYRIDÆGENUS MEGADERMA

      Bats with simple or complicated nose-leaves or membranes. The conch of the ear very large, and joined together on the top of the head; tragus large and bifurcated; nasal membranes complicated; no tail; wings remarkably ample. They have four incisors below but none above, the intermaxillaries remaining cartilaginous.

      Dental formula: Inc., 0/4; can., 1—1/1—1; pre-m., 2—2/2—2; molars, 3—3/3—3.

NO. 36. MEGADERMA LYRAThe Large-eared Vampire Bat (Jerdon's No. 15)

      HABITAT.—India and Ceylon.

      DESCRIPTION.—Above ashy blue, slaty or pale mouse colour; albescent or yellowish ashy beneath; nasal appendage large, oblong, free at the tip, reaching to the base of the ears with a fold down the centre; tragus (oreillon) cordate, two-lobed, anterior long, narrow and pointed, posterior lobe half the height and rounded; muzzle truncated; under-lip cleft; wing membranes dark brown.

      SIZE.—Head and body, 3 or 3½ inches; wing extent, 14 to 19 inches.

      Very abundant in old buildings. They are beyond doubt blood-suckers. Blyth noticed one fly into his room one evening with a small vespertilio, which it dropped on being chased. The smaller bat was weak from loss of blood, and next morning (the Megaderm having been caught), on both bats being put into the same cage, the little one was again attacked and devoured; it was seized both times behind the ear. McMaster writes that in Rangoon he had a tame canary killed by a bat, and the bird's mate soon afterwards was destroyed in the same way. The case was clearly proved.

      Mr. Frith informed Mr. Blyth that these bats were in the habit of resorting to the verandah of his house at Mymensing, and that every morning the ground under them was strewed with the hind quarters of frogs, and the wings of large grasshoppers and crickets. On one occasion the remains of a small fish were observed; but frogs appeared to be their chief diet—never toads; and of a quiet evening these animals could be distinctly heard crunching the heads and smaller bones of their victims.

NO. 37. MEGADERMA SPECTRUMThe Cashmere Vampire (Jerdon's No. 16)

      HABITAT.—Cashmere.

      DESCRIPTION.—Above slaty cinereous, whitish beneath; the vertical nose-leaf of moderate size, oval; inner lobe of tragus ovate (Jerdon).

      SIZE.—Two and three-quarter inches.

      Dobson makes this bat synonymous with the last.

NO. 38. MEGADERMA SPASMA

      HABITAT.—Tenasserim, Ceylon.

      DESCRIPTION.—Muzzle, ear-conch, and tragus similar to those of M. lyra; the posterior portion of the tragus, however, is longer and more attenuated upwards, and more acutely pointed; the nose-leaf is shorter, with convex sides; but the anterior concave disc is considerably larger, and the base of the thickened process is cordate; thumbs and wings as in M. lyra; interfemoral membrane deeper; the calcaneum stronger; colour the same.

      SIZE.—Head and body, about 3 inches. This bat is alluded to by Jerdon as M. Horsfieldii.

RHINOLOPHINÆ

      Nasal leaf complicated, and crests resting on the forehead, presenting more or less the figure of a horse-shoe; tail long and placed in the interfemoral membrane; ears large, but separate, and not joined at the base, as in the last genus; without a tragus, but often with a lobe at the base of the outer margin; wings large and long; forefinger of a single joint.

GENUS RHINOLOPHUS

      Nose-leaf cordate, or semi-orbicular, bi-lobed in front of the nostrils; a longitudinal crest along the nose and an erect frontal leaf posteriorly more or less lanceolate.—Jerdon.

      Dental formula: Inc., 2/4; can., 1—1/1—1; premolars, 2—2/2—2; molars, 3—3/3—3.

NO.

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