THE ROQUET-DOG BATS. 



45 



(B.) Species belonging to the New World. 

 a nycticejus pruinosus hoary roquet-dog bat. 



Syn. Vespertilio Pruinosus — Say, in Long's Exped. to the Rocky Mount. 

 I. 331— Harlan. Faun. Amer. p. 21. 



Hoary Bat. — Godman, Amer. Nat. Hist. I. 50. 



Vespertilio Villosissimus? — Geoff. Ann. Mus. VIII. 204. 



Chauve-Souris Septieme, d'Azara. — Quadr. II. 284. 



Nycticejus Pruinosus Temm. Mon. Mam. II. 154. 



Scotophilus Pruinosus. — Gray, Mag. Zool. and Bot. II. 498. 

 Icon. Godman, 1. c. fig. 3. 



SPECIFIC CHARACTERS. 



The Fur dark grey on the back, ferruginous near the tail ; dark be- 

 neath. 



The Membranes extensively covered with fur. 

 Inhabits the banks of the Missouri, North America. 



The ears of this species are short, and broader than high, not so long 

 as the head, and clad exteriorly throughout half their length; the tragus 

 is leaf-shaped, and inclined towards the head ; the muzzle short and ob- 

 tuse ; nostrils wide apart. The fur is long, and very abundant, extend- 

 ing on the alar membrane along the arms and flanks, and being very 

 abundant on both sides of the interfemoral. " The hair on the back is 

 black-brown at the base, then yellowish-brown, then blackish, and then 

 white; towards the rump dark ferruginous takes the place of the brown- 

 ish-yellow on the fur ; beneath, the colours are similar to those of the 

 back, but, on the anterior portion of the breast, the fur is not tipt with 

 white, and on the throat is dull yellowish- white." — Say. The total length 

 is four and a half inches. Mr Say states it is common in the Missouri ; 

 it has also been found in Philadelphia, and other parts of the United 

 States. 



9. NYCTICEJUS LASIURUS.— ROUGH-TAILED ROQUET-DOG 



BAT. 



Syn. Nycticejus Lasiurus Temm. Mon. Mam. II. 156. 



Vespertilio Lasiurus Linn. Gmel. I. 50. 



Scotophilus Lasiurus.— Gray, Mag. Zool. and Bot. II. 498 Geoffr. 



Ann. Mus. VIII. 200— Desm. Mam. No. 215 Penn. II. 315. 



Icon. Schreb. I. t. LXII. B — Geoff. 1. c. pi. 2; copied in Temm. pi. 47, 

 fig. 8. 



SPECIFIC characters. 



The Fur reddish-yellow above, paler beneath. See description. 



The Head very small. The Membranes well covered with hair. 



Inhabits the United States and South America; common at Cayenne. 



This Bat is remarkable for the smallness of its head ; its ears are short 

 and oval ; the tragus, too, is short, and curved forwards ; its large inter- 

 femoral membrane is uniformly clad above, and extensively, as is the alar 

 membrane beneath. It has a spot of pure white on each side of the 

 chest. The fur, in summer, differs from that of winter. During the for- 

 mer season, the hair on the head and neck is red, tipt with yellow ; the 

 rest of the upper parts of the body have the hairs yellow at the root, and 

 tipt with cinnamon-red ; the points in some are pure white : underneath 

 the chin is bright red ; the chest, with the exception of the white spots, 

 yellowish red ; and on the other parts red predominates. During win- 

 ter, and in the young, the colour is a bright yellow, with a red tint ; the 

 neck is bright red, and the white spots at the origin of the wings are con- 

 spicuous ; the abdomen is rosy white, the membranes red. The total 

 length, including the tail, is somewhat more than four inches,— the ex- 

 panse eleven inches ; the size is seldom more considerable. The speci- 

 mens from Cayenne are usually larger than those from the United 

 States. 



10. NYCTICEJUS NOV^BORACENSIS— NEW YORK ROQUET- 

 DOG BAT. 

 Syn. Nycticejus Nov.eboracensis— Temm. Mon. Mam. II. 158. 



Vespertilio Nov^bor acensis— Penn. Quadr. II. 313— Linn. Gmel. 



I. 50 — Geoffr. 1. e. 203. 

 Atalapha Americana — Desm. Mam. No. 227, from Rafinesque. 

 Scotophilus Nov^eboracensis — Gray, Mag. Zool. and Bot. II. 498. 

 Icon. Penn. 1. c. pi. CIV. fig. Encycl. Method, pi. 34, fig. 5. 



specific characters. 



The Fur of a uniform reddish-brown colour, with small white spots 

 at the origin of the wings. 



The Muzzle short and obtuse. The Ears short, broad, and round. 

 Inhabits New York, and the Northern States of the Union. 



VOL. II. 



This species differs but little from the preceding two, except in the 

 colour, which is uniform throughout, with the exception of small white 

 spots at the origin of the wings. The muzzle is short and obtuse, the 

 ears short, broad, and roundish ; the whole of the upper part of the in- 

 terfemoral membrane is clad, and a portion of the under. The fur is 

 long, copious, soft, and silky ; the upper and under parts, and the inter- 

 femoral, have all the same light rosy brownish colour, with a small spot 

 at the insertion of each wing. Its total length is about three and a half 

 inches, its expanse nearly twelve. 



II. NYCTICEJUS BONARIENSIS BUENOS-AYRES ROQUET- 

 DOG BAT. 



Syn. Nycticejus Bonariensis. — Temm. Mon. Mam. II. 158. 



Vespertilio Bonariensis Less. Voy. de la Coq. I. 137. 



Icon. Lesson, loc. cit. pi. 2, fig. 1, A, B, C, (cran. and teeth.) 



SPECIFIC CHARACTERS. 



The Fur yellowish on the back ; yellowish-brown on abdomen. 

 The Ears short and oval. The Membranes dark red, the interfemo- 

 ral clad above, naked below. 

 Inhabits South America. 



We supply a description of this species in respect to M. Lesson, though 

 we agree with M. Temminck, it will probably turn out to be only the Nycti- 

 cejus lasiurus. Its muzzle is short and conical ; the ears short, roundish, 

 and wide apart. The face is clad with a few hairs ; long and silky hairs cover 

 the under part of the side membranes, and extend along the fore-arm ; 

 the interfemoral membrane is clad above, and naked beneath : the fur is 

 abundant, and of many colours throughout ; the muzzle is yellowish-red, 

 the back a light fawn, each hair ending in first a black and then a white 

 part ; the upper part of the interfemoral membrane is of a deep dark red ; 

 the throat, chest, and abdomen, are light brown. The total length is 

 about three inches, the expanse about nine. The individual just de- 

 scribed was captured in a vessel lying at anchor in the River La Plata. 



doubtful species. 



In this category we place two species, upon which Rafinesque origin- 

 ally founded the genus, but which have not since been seen, or. at least 

 described, by any Naturalist, American or European. 



1. Nycticejus humeralis The Blachhoulder Bat of Rafinesque, 



and noticed by him in Kentucky, North America. It is about three and a 

 half inches long, including the tail ; the ears are oval, longer than the 

 head, and blackish, as is the muzzle ; the eyes are small, and hid by the 

 hair. The fur is a deep brown colour above, grey beneath, with black 

 shoulders ; the membranes are very dark. 



2. Nycticejus Tessellatus The Netted Bat is about four inches 



long, one half of which is occupied by the tail, terminating in a project- 

 ing tubercle ; the nose is bi-lobed ; the ears almost hid in the fur, which is 

 bay-coloured above, fawn beneath, with a narrow yellow collar, and 

 white arm-pits ; the wings are netted, and tipt with red. Like the for- 

 mer, it inhabits Kentucky. 



imaginary genus. 



Atalapha The genus Atalapha of Rafinesque, which has been 



adopted by Desmarest, Lesson, and others, having been founded upon 

 an aged individual of the New York species which had lost its incisors, 

 must, of course, be blotted out from our systems. 



GENUS XXIV. VESPERTILIO.— BATS PROPER. 



Syn. Vespertilio, (in part.) — Linn. Gmel. I. 45 Geoffr. in Ann. Mus. 



VIII. 187 Fischer, (in part,) Syn. Mam. 100. — Desm. et Auct. 



Vespertilio et Plecotus Les Oreillards. — Cuv. Reg. Anim. T. I. 



120, 121 Geoffr. loc. cit. et Cours de l'Hist Nat. Lee. 14, 23, 



et alia. 

 Vespertilionina, (in part.) — Gray, Mag. Zool. and Bot. II. 494. — 



Lesson, et al. 



generic characters. 



The Dental FoR M u,^ g+g+g +4)M : 

 8| 2+c4-(2F-f4)M 



It 



18 



=32 



Or, 



18 „ H 



|3+C+(2F+4)M~20 



And also, according to tfTe number of false molars, 34 and 36. 

 The Tail is invariably included in the interfemoral membrane. 

 The Nose without nose-leaf, ridges, tubes, &c. 

 The Miodle Finger has three phalanges. The Ring and Little One 

 two. The Index one. 



