626 



REPORT OF STATE GEOLOGIST. 



ing to or slightly past the level of the nostril when laid forward. 

 The anterior border is very convex except near the tips, where it is 

 slightly concave. Tragus long ; the anterior edge straight, the pos- 

 terior convex for the basal two-thirds, then suddenly tapering to 

 the narrow, rounded tip. 



The membranes are very sparsely haired, thick and leathery, 

 and about the color usually found in M. lucifugus. Calcar slender 

 and longer than the free border of the interfemoral membrane. 



Measurements. — From a single adult female taken at Mitchell: 

 Total length, 97 mm. (4 in.) ; tail, 40 mm. (1 10/16 in.) ; hind foot, 

 10 mm. (6/16 in.) ; forearm, 44 mm. (1 13/16 in.) ; ear, 12 mm. 

 (1/2 in.). 



Skull and teeth. — The skull is large and heavily built, resem- 

 bling M. lucifugus in form, but easily distinguished by its larger 

 size. Measurements of one skull from Mitchell : Greatest length, 

 16 mm. (11/16 in.) ; length of palate, 8 mm. (5/16 in.) ; maxillary 

 tooth row, 7 mm. (i^ in.) ; greatest width of braincase, 8.5 mm. 

 (6/16 in.) ; depth of braincase over bullae, 7.5 mm. (5/16 in.). 



Range. — Known only from Tennessee, Missouri and Indiana. 

 In Indiana but one specimen has been taken. It was an adult 

 female captured in Twin Cave at Mitchell on August 9, 1907. The 

 condition of the mamma^ showed that the animal had nursed during 

 that summer. It was sent to Mr. A. H. Howell, of the Biological 

 Survey, who identified it as Myotis velifer, and it was so recorded 

 by the writer (loc. cit.). Later Howell mentions this specimen in 

 his description of M. grisescens from Nickajack Cave, Tennessee. 



Hahits. — Nothing is known of the distinctive habits of this 

 species. As far as I am aware, it has never been found far from 

 caves, and it is characteristically a cave dweller. 



Germs Lasionycteris Peters. 



Dental formula.— I, C, Pm, M, = 36. 



Generic eharaelers. — Ears and tragus short and })road, the for- 

 mer with a large basal lobe; color blackish; interfemoral membrane 

 furred on top on the basal half. The sknll (fig. 2!)) is broad and 

 fhif. file rosfi-al portion being very broad in ])r()portion to the size 

 of the skull. The braincase rises gradually from fh(^ nnizzh^ and 

 its dorsal profile is nearly straight. 



'{'he genus contains bnt one sjx'cies which is (list I'ibntcd through- 

 out the Tnilcd Slalcs an(i sonlhcni Canada. Its (h'nfal fornnila 

 differs I'l-oni llial of any other bat Fonnd in this State with the ex- 



