. The families and genera of bats . Bats; Bats. 88 BULLETIN" 57, UNITED STATES NATIONAL MUSEUM. Genus RHYNCHISCUS Miller. 1823. Probosoidea Spix, Simiarum et Vespertilionum Brasil. Spec. Nov., p. 61. (Not ProTioscidca J. 6. Brugiere, 1791.) 1867. RUynchonyctcris Peters, Monatsber. k.' preuss. Akad. Wissensch., Berlin, p. 477. (Not Rhinchonycteris Tschudi, 1844-46.) 1878. Rliynchonycteru Dobson, Catal. Cliiropt. Brit, Mus., p. 366. 1904. ProDoscidea Allen, Bull. Amer. Mus. Nat. Hist., XX, p. 343, October 8, 1904. 1907. Rhyncliiscus Miller, Proc. Biol. Soc, Washington, XX, p. <Ki. June 1
. The families and genera of bats . Bats; Bats. 88 BULLETIN" 57, UNITED STATES NATIONAL MUSEUM. Genus RHYNCHISCUS Miller. 1823. Probosoidea Spix, Simiarum et Vespertilionum Brasil. Spec. Nov., p. 61. (Not ProTioscidca J. 6. Brugiere, 1791.) 1867. RUynchonyctcris Peters, Monatsber. k.' preuss. Akad. Wissensch., Berlin, p. 477. (Not Rhinchonycteris Tschudi, 1844-46.) 1878. Rliynchonycteru Dobson, Catal. Cliiropt. Brit, Mus., p. 366. 1904. ProDoscidea Allen, Bull. Amer. Mus. Nat. Hist., XX, p. 343, October 8, 1904. 1907. Rhyncliiscus Miller, Proc. Biol. Soc, Washington, XX, p. <Ki. June 12, 1907. Type-species.—Proboscidea saxatilis Spix=VespertiMo naso Wied. Geographic distribution.—The mainland of tropical America. Number of forms.—Only one species of Rhynchiscus is now known. Characters.—Dental formula: 2 .1-1 „ 1-1 2-2 m -3 = 1 2 3. 1. - 2 - 45"6 7 " 3 - 3' " 1 - 1' t"'" 2 - 2' "' 3-3" Upper incisor minute, simple, persistent, inserted in main axis of premaxillary and at extreme tip of bone, the teeth, therefore, converging. Lower incisors small, trifid, forming a continuous, slightly concave line between canines. Canines and lower premolars as in Emballonura. Anterior upper premolar (pm2) unusually large', its crown sharply pointed and noticeably flat- tened laterally, the outline being nearly an isosceles triatfgle. First upper molar with conspicuous antero-external cusp separate from small parastyle. Hypocone of m1 and m2 very distinct, subterete. Third upper molar with well-developed metacone and three commissures. Lower molars all alike in form, the third merely smaller than the others, all the cusps normal. Skull (fig. 13) with rostrum somewhat more than half as long as brain case, and so' deep posteriorly that the forehead forms scarcely any angle with upper surface of rostrum. Lachrymal region slightly inflated. Premaxillaries short, very broad posteriorly, extending to upper, surface of rost
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbats, bookyear1907
