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Identifier: smithsonianmisce691921smit Title: Smithsonian miscellaneous collections Year: 1862 (1860s) Authors: Smithsonian Institution Subjects: Science Publisher: Washington : Smithsonian Institution Contributing Library: Smithsonian Libraries Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image: ch they havebeen compared, but the external dimensions are about the same.Specimens examined : Boquete, 4.1 Genus NYCTERIS BorkhausenThe genus Nycteris is easily recognizable by the continuation ofthe dense body fur over the hind limbs and the entire upper side ofthe wide interfemoral membrane. Distinctive tufts of fur appearalso at the upper base of the thumb and along the basal portion of thefourth finger. In the allied genus Dasypterus the interfemoral mem-brane is much less extensively clothed. The skull of Nycteris is shortand the rostrum broad and massive, very much as in Dasypterus, buta pair of minute upper premolars is not present in the latter genus.The teeth are 32 in number. NYCTERIS BOREALIS MEXICANA (Saussure) Mexican Red Bat A[talapha] mexicana Saussure, Rev. et Mag. de Zool., Ser. 2, Vol. 13, p. 97,March, 1861. Type from southern Mexico. The rich reddish brown color of the upperparts, including the furcovering the hind limbs and the entire upper side of the wide inter-

Text Appearing After Image: Fig. 21.—Nycteris borealis mexicana.No. 122663, U. S. Nat. Mus. About nat. size. femoral membrane distinguishes this bat from the otherwise similarform, Dasypterus ega panamensis, and all others of the generalregion. The ears are short and rounded as in Dasypterus. The fore-arm measures about 41 millimeters. Bangs (1902, p. 50) records a specimen collected by W. W. Brown,Jr., at 4,800 feet near Boquete on the southern slope of the Volcan deChiriqui, where the species reaches the extreme southern knownlimit of its distribution. Specimens examined : Boquete, I.2 1 Three in collection Amer. Mus. Nat. Hist.; one in Mus. Comp. Zool. Collection Mus. Comp. Zool. NO. 5 MAMMALS OF PANAMA—GOLDMAN 217 Genus DASYPTERUS PetersThe genus Dasypterus is similar externally to Nycteris, but thehind limbs and the posterior part of the interfemoral membrane arenaked. The skull indicates alliance to Nycteris, but the absence ofthe small anterior upper premolars still appearing- in that genus isdistinct

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