ALLEN: BATS OF THE GENUS CORYNORHINUS. 339 



Burke's Garden, Virginia, a cusp is barely indicated by a minute 

 shoulder. In macrotis this cusp is normally well developed. 



Measurements. — No. 157076, Biol. Surv. Coll., from Burke's Garden, 

 Bland County, Virginia: forearm 45 mm. (average of three adults 

 44.1); digit III, metacarpal 39.8; first phalanx 13.8; second phalanx 

 19; tibia 19. Collector's measurements: total length 107 mm., tail 

 49; hind foot 12; extent of wings 320. 



Skull: greatest length 17.4 mm.; basal length 14; palatal length 8; 

 zygomatic breadth 9; interorbital constriction 4 ; mastoid breadth 9.2 ; 

 width of braincase 8.6; upper tooth row 6.7; lower tooth-row 7.3. 



Remarks. — The discovery of a Corynorhinus distinct from C. ma- 

 erotis, from extreme western \'irginia, westward, in the eastern United 

 States was wholly unexpected. It is the eastern representative of the 

 desert-colored paUescens of west-central United States, from which it 

 chiefly differs in its somewhat darker, more drab, coloration. The 

 skull is a trifle larger as well. I have applied to it Rafinesque's name 

 megalotis, based on specimens which he collected from " the lower parts 

 of the Ohio" River probably in southern Indiana or western Ken- 

 tucky, where the genus is known to occur at the present time (see 

 Cory, 1912, p. 476). Rafinesque's description is brief, yet I think 

 unmistakable in the light of our present knowledge. Nevertheless, 

 Miller, in 1897, rejected his name as unidentifiable and applied Le 

 Conte's later name, macrotis, to the species of Corynorhinus in eastern 

 North America. The discovery of a species in the interior distinct from 

 macrotis makes it necessary either to erect a new name or to recognize 

 megalotis as applicable to it, and this latter course I propose to adopt. 

 In 1818, Rafinesque sent to the editors of the American Monthly 

 Magazine brief accounts of the animals he discovered in the course of 

 his journey "through the western region of the United States," and 

 gave new names to many of these. In one of these communications 

 written in October, he gave a brief statement of certain supposed new 

 species obtained since July, during which time he says, he had visited 

 " the lower parts of the Ohio, the Wabash, Green River, Barrens, 

 Prairies, and the states of Indiana, Illinois, &c." This is the general 

 locality whence he obtained the new bat which he describes as follows : 



"9. VespertiUo megalotis R. (Big-eared Bat.) Tail three-eighths 

 of total length, body dark gray above, pale gray beneath, ears very 

 large, duplicated, auricles nearly as long. Length 4 inches, breadth 

 12 inches." 



The evident similarity to the Old World Plecotus, led Lesson in 

 1827 to change the genus and (as the custom then was) the specific 



