File:Image from page 134 of "Revisions of the North American bats of the family Vespertilionid(a)e (microform)" (1897).jpg

English: Title: Revisions of the North American bats of the family Vespertilionid[a]e [microform]

Identifier: cihm_14760 Year: 1897 (1890s) Authors: Miller, Gerrit S. (Gerrit Smith), 1869-1923 Subjects: Bats; Chauves-souris Publisher: Washington : G. P. O. Contributing Library: www.flickr.com/search/?tags=bookcontributorCanadiana_org Digitizing Sponsor: University of Alberta Libraries

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Text Appearing Before Image: 128 NORTH AMERICAN FAUNA. Hi ii. :i ! i I ! 11 1 Hi III!! III tiip

Text Appearing After Image: Fi8.40.âTeeth of (a) Ithogertia tumida and (b) R.graeilii (â 5). Teeth.âThe teeth of Hhoijei'sa ^riwilxH (tif;. 40) diflTer from thoHe of R. tumida in iiiimerous Uetail8. The urowuH of the upper inolarH are much narrower on the lingual Hide and the posterior upi>er molar is couHlderably broiider. The front lower premolar is sli^^htly larger thau iu U. tumida, but otherwise the mandibular teeth show no distinct difierenees. Meamirements.âSee table, page 129. Sjfeebnens examined,â Total number, 3, from the following localities: lathiiiiiH of Tehiiiiiitepec, 1. Paebla: Piaxtla, 2. Oeneral remarks.âRhoge- I'ssa gracilis is so readily distinguished fromtbeother species of the gejius by its slender form and very large ears that no detailed comparisons are necessary. This is the only species of North American VespertUionida' in which I have found any sexual diU'erences in cutuneous structures. RHOGEi-'SSA ALLKNI Thouias. 1892. Rhogeessa alleni Thomas, Ann. & Mag. Nat. Hist., 6th ser., X, p. 477, LU'coni- ber, 1892. Type lomliti/.âSanta llosalia, near Autlan, Jalisco, Mexico. Type in British Museum. Oeoyraphic distribution.âRhogei'ssa alleni is known from the type locality only. Characters.âAs I have not seen the type and only knoMu specimen of this bat, I copy Mr. Thomas's original des»jription: "Decidedly larger than Rh.parvula; muzzle obliquely truncate as in that species. Ears large, laid forward they reach about 1 or 2 millim. beyond the nostrils; their inner margin very convex forwards below, straight or even slightly concave above; tip narrowly rounded off; outer margin concave below the tip, then straight, becoming slightly convex below, outer basal lobe but little marked. Tragus long, its broadest point opposite to base of its inner edge; inner edge straight or slightly concave, tip rounded, outer margin slightly convex, the edge indistinctly crenulate, somewhat as in Antrozons pallidus; a marked lobule at the base of the outer margin, above and below which there is a concavity. Thumb very short and th ick, no longer than in Rh. parvula. Posterior edges of wing-membrane bordered with whit«, bifid tip to fourth finger unusually distinct; wings from the base of the fifth toe; post-calcareal lobe small and narrow; tip of calcar projecting slightly from the back of the membrane; tail included in membrane to the extreme tip."

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