CHIltOPTEIlA— VESPEBT1LIONIDJ5— A. NOVEBOKACENSiS. 87 



ATALAPHA (NYCTICEJUS) CREPUSCULARIS, (LeC.) Coues. 



Twilight Bnt. 



Vespertilio crepuscularis, LeContb, McMnrtrie's Cuv., i, 1831, 432, and Proc. Phila. 



Acad., vii, 1855, 433. 

 Nycticejus crepuscularis, Allen, Monog., 12. 

 Vespertilio creeks, F. Cuv., Nouv. Ann. Mus., i, 1S32, IS. 



Char. — Teeth only 30 iu all (molars, f) ; upper incisors small, slightly convergent, 

 close to canines, which are large, simple ; front molar longer and slenderer than the rest. 

 Skull not so flat as in Vesperus and Vesperugo, yet uot so inflated as in Lasiurus ; 

 longer and more pointed than in Lasiurus. Head short, broad, flat ; ears small, simple, 

 widely separated; internal border at base strongly curved, outer rather inconspicuous; 

 tragus straight on inner, convex on outer border. Nostrils simple, not produced, very 

 little emargiuate. Cheeks tumid. A rather large naked chin space. Eyes small, 

 with a wart above on either side : another between ear and angle of mouth. Inter- 

 femoral membrane not hairy, triangular, moderately ample ; calcaneal spur slight ; 

 tip of tail exserted. Membranes blackish-brown; face black. Fur rather scanty, 

 woolly; excepting a small patch at base of the iuterfemoral, the membranes are naked 

 both sides. Back lower third of ear hairy. Hairs on upper parts dark fawn for upper 

 half, lower half lighter, bordering on brown; color of the lower parts lighter and 

 more uniform, very plumbeous at base, light brown at tips of the hairs. General 

 expression of species of Vesperus and Vesperugo, but the naked parts blackish. 

 Length to end of tail, 3J; expanse, 74-94 ; tail, 1J; arm, 1J ; shin, 4 ; longest Auger, 

 2J-2f ; ear under 4. 



Hab. — Has been observed from Pennsylvania and Missouri to Georgia and 

 Texas, and doubtless also occurs iu New Mexico. 



ATALAPHA (LASIURUS) NOVEBOKACENSIS, (Erxl.) Coues. 



The Red liist ; Kew York Bat. 



Vespertilio noveboracensis, ERXLEBEN, S\ st. Anim., 1777, 135. — HARLAN, Fii. Am., 1825, 

 20.— GODliAN, Am. Nat. Hist., i, 1831, OS, pi.—, f. 1, 2.— Cooper, Ann. Lye. 

 N. Y., 1S37, 57.— DeKay, Nat. Hist. N. Y., 1S42, 0, pi. ii.— LeConte, Proc. 

 Phila. Acad., 1S55, 432. 



Nycticejus noveboracensis, Leo., McMurtrie's Guv., 1831, 432. 



Lasiurus noveboracensis, Tomes, Proc. Zool. Soc, 1S57, 34.— Allen, Monog., 1C. 



Vespertilio lasiurus, GMELIN, S. N., 1788, 50. 



Nycticejus lasiurus, WAGNER, Suppl., Schreb. v, 1S55, 772. 



Vespertilio rubellus, BEAUVOIS, Cat. Peale's Mas., 1796. 



Vespertilio villosissimus, GEOFFEOY, Ann. Mas., viii, 1S0U, 47S. 



Vespertilio monachus and tesselatus, Kafinesque, Am. Month. Mag., iv, 1817, 445. 



Taphyzous rufus., HARLAN, Fn. Am., 1S25, 23. 



Vespertilio rufus, WARDEN, Descr. t'. .">., v. 602. 



Lasiurus rufus, Gray, List Mamm. Br. Mas., 1843, 32.— Gosse, Nat. in .lam.. 1851, 2S0. 



