308 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
» 
CoRYNORHINUS MEGALOTIS (Rafinesque). 
Rafinesque’s Big-eared Bat. 
Vespertilio megalotis Rafinesque, Amer. monthly mag., 1818, 3, no. 6, p. 446. 
Plecotus rafinesquii Lesson, Manuel de mammalogie, 1827, p. 96. (Renaming 
of Rafinesque’s V. megalotis). 
Corynorhinus macrotis Miller, N. Amer. fauna, 1897, no. 13, p. 51 (? in eee 
Kentucky specimen cited). 
Type.— None specified, and original specimens not known to be 
extant. 
Type Locality.— “The lower parts of the Ohio” River, probably in 
southern Indiana and Illinois or’ western Kentucky in the region 
between the Wabash and the Green Rivers. 
Distribution.— Central eastern United States from extreme western 
Virginia, through Kentucky, southern Indiana and Illinois, to Kansas, 
intergrading with the race pallescens to the westward. 
General Characters— Largest of the megalotis-macrotis group; 
bases and tips of hairs, above and below, not strongly and sharply 
contrasted in color. 
Color.— Adults: bases of the hairs, on dorsal surfaces of the bedy, 
gray or slaty gray shading by imperceptible degrees into a ‘wood 
brown’ (Ridgway, 1912) at the sides, and a ‘clove brown’ over the 
median area of the back. The amount of ‘clove brown’ wash over 
the back varies slightly in individuals, but conduces to a much darker, 
more drabby appearance than is found in typical pallescens. Downy 
hairs at the bases of the ears posteriorly are whitish. Ventral sur- 
faces ‘pale pinkish buff,’ the bases of the hairs shading into grayish. 
Immature specimens (No. 157075 Biol. Surv. Coll., Burke’s Garden, 
Va., 7 August, 1908), are uniform dark ‘hair brown’ to ‘fuscous’ 
above to the bases of the hairs; below, pale ‘hair brown’ the hair 
along the sides and on the belly paling at the tips to a dirty whitish. 
Compared with immature pallescens, it is more uniformly dark, lacking 
the light buffy admixture. It is also darker and larger than the 
Mexican race. 
Skull.— The skull is largest of all the megalotis-macrotis group, with 
broad depressed rostrum, and large brain case. The intermaxillary 
notch viewed from above is rather larger with wider-bowing sides 
than that of macrotis. The inner upper incisor is usually without 
trace of a secondary outer cusp, though in one of four specimens from 
