112 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



up by Latreille and described. The Vesperus of K. & B, is, therefore, 

 untenable. Vesperus is valid only in Latreille, 1829 (Coleoptera, Ceram- 

 bycidse). Acting upon the information herein conveyed, I have proposed 

 [1. c.) to change the name of Vespcnis as applied to a genus of Chirop- 

 tera to Adelonycteris, 



1. Adelonycteris fuscus (Palisot de Bcauvois), The Brown Bat. (Plates xv, xvi 



XVII.) 



Vespertilio fuscus Palisot <le Beauv., Cat. Peale's Mns., 1796, 14; Leconte, Proc. Acad. 



Nat. Sci. Phila., 1855, 437. 

 Vespertilio caroliuensis Temniinck, Monog. Mam., ii, 1835, 237; Harlan, Fauna 

 Amer., 1825, 9; Godman, Amer. Nat. Hist., 1826, 67; Leconte, Cuv. An. King., 

 (McMurtrie's ed) i, 1831, 431; Harlan, Month. Amer. Jonr. Geol. and Nat. Sci., 

 I, 1831, 218; lb., Med. and Phys. Researches, 1831, 28; Cooper, Ann. Lye. Nat. 

 Hist., N. Y., IV, 1837, 60; DeKay, Nat. Hist. N. Y., Zool., 1842, 10, PI. II, f. 1.; 

 Leconte, Proc. Acad. Nat. Sci. Phila., 1855, 434; Wagner, Schreb. Siiugeth.' 

 Suppl., V, 1855, 753. 

 Vespertilio arcuatus Say, Long's Exped. Rocky Mts., 1823, 167. 



Vespertilio phaiops Raf. Amer. Month. Mag., 1818, 445 {not Temm. Monog. Mam., ii, 

 18.35, 234); Leconte, Proc. Acad. Nat. Sci. Phila., 1855, 437; Wagner, Schreb. 

 Siiugeth., Snppl., v, 1855, 7.56. 

 Vespertilio ursinus Teinminck. Monog. Mam., ii, 1835 ,234; Wagner, Schreb. Siiugeth., 



V. 1855, 7-56; Max. zu Wied, Archiv Naturg., 1861, 190. 

 Vespertilio {/rijphus Wagnet, Schreb. Siiugeth., v, 1855, 749. 

 Vespertilio caroli Leconte {not Temm.), Proc. Acad. Nat. Sci. Phila., 1855, 437. 

 Scotophilus (jrceni Gray, Cat. Mam. Brit. Mus., 1842.* 

 Scotophihis fuscus H. Allen, Monog. N. A. Bats, 1864, 31; J. A. Allen, Bull. Mus. 



Comp. Zoiil., 1869, 208. 

 Vesperus serotinus var. fuscus, Dobson, Cat. Chirop. Brit. Mus., 1878, 193. 

 Vesperus serotinus Alston., Biolog. Centrali-Amer., Mam., 1879-82, 20. 

 Vesperus serotinus fuscus Merriam, Mammals of Adirondack Region, 1886, 184. 



Di«/7»o,s?.s.— Scallops of auricle disposed to be revolute. Chin plate 

 obscurely defined or triangular. Upper lip not defined— continuous 

 with muzzle. Tragus blunt— outer border slightly convex. Tlie me- 

 dian incisor bifid greatly larger than lateral coracoid. The process 

 with small anterior spine froni free end; not deflected posteriorly, but 

 descends parallel to glenoid cavity. Dorsum of face naked; lips not 

 whiskered. 



DeHcripUon. — Ears erect, but incline outward; the tip can be made to 

 reach a point half way between the angle of the mouth and the snout. 

 The general slope of the ear is elliptical, with the blunt tip turned 

 slightly backward. The internal basal lobe broad rounded, but does not 

 project back of the internal ridge ; the anterior border of the ear convex, 

 posterior emarginate and joins the region of the external ridge abruptly 

 by a moderate first scallop, which is sometimes revolute. The external 

 basal lobe is longer than high involute, scarcely elevated posteriorly, 

 slightly oblique to the border of the auricle and thicker on free border 

 than elsewhere. The second scallop occupies a triangular space and 



*J. A. Allen believes that Eptesicu9 melanopm Raf., belongs to this synonomy, 

 (See Appendix.) 



