. The land and sea mammals of Middle America and the West Indies . Fig. 129. Thyroptera discifera. No. 10S419 U. S. Nat. Mus. times nat. size. Face enlarged 7 times. den in fur; tips pointed, lower two-thirds of outer margin convex,terminating midway between tragus and angle of mouth; upper por-tion of outer margin concave; tragus short, with a prominentlobule opposite the base of its inner margin directed forward, ab-ruptly narrowed in upper third, very acutely pointed and curvedinward; deep pit between nostrils; lower lip with groove on eachside inclosing an angular cushion; wing mem
. The land and sea mammals of Middle America and the West Indies . Fig. 129. Thyroptera discifera. No. 10S419 U. S. Nat. Mus. times nat. size. Face enlarged 7 times. den in fur; tips pointed, lower two-thirds of outer margin convex,terminating midway between tragus and angle of mouth; upper por-tion of outer margin concave; tragus short, with a prominentlobule opposite the base of its inner margin directed forward, ab-ruptly narrowed in upper third, very acutely pointed and curvedinward; deep pit between nostrils; lower lip with groove on eachside inclosing an angular cushion; wing membrane to ankles; a cir-cular hollow disk on ball of thumb and another smaller one on soleof the foot; upper incisors directed forward and inward, bifid;lower incisors trifid; canines small; the first upper premolar smallerthan second, and first lower premolar also smaller than second butlarger than canine; middle lower molar Fig. civ. Thyroptera I02Q23 U. S. Nat. Mus. Coll. THYROPTERA. CHILONYCTERIS. 639 Color. Above reddish brown, under ])arts i)ale yellowish white;membranes dark brown. Measurements. Total length, ; forearm, 38; third finger, ;fourth finger, ; fifth finger, ; tibia, ; tail, ; free por-tion, ; ear, ; tragus, Skull: occipito-nasal length, 13;Hensel, ; zygomatic width, 6; interorbital constriction, 2; palatallength, ; height of braincase, above zygomata, 5; length of uppertooth row, 5 ; length of mandible, ; length of lower molar series, 5. The Bats of the next family gained their trivial name not so muchfor any especially bad habits the majority may have possessed, buton account of the blood-sucking propensities of the Desmodontinesection. Indeed, some of the species are far removed from the ranksof the Vampires and are insect-eaters, while a large number live onboth insects and fruit. The species of the various genera differwide
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmammals, bookyear1904
