AMERICAN" BATS OP THE GENERA MYOTIS AND PIZONYX 



81 



fig. (head), 1912.— Miller, List North Amer. Land Mamm. 1911, Bull. U. S. 

 Nat. Mus., No. 79, p. 54, December 31, 1912. — A. H. Howell, North Amer. 

 Fauna, No. 45, p. 23, October 28, 1921. — Elliot, Check List Mammals North 

 Amer., suppl., p. 154, 1917. — Millek, List North Amer. Recent Mamm. 1923, 

 Bull. U. S. Nat. Mus., No. 128, p. 67, April 29, 1924. 



Type locality. — Nickajack Cave, Marion County, Tenn. • 



Type. — Adult male, skin and skull. No. 157517 United States 

 National Museum (Biological Survey Collection), collected in Nicka- 

 jack Cave, near Shellmound, Marion County, Tenn., August 31, 1903, 

 by A. H. Howell. 



Map 3. — Disteibution of Myotis ohiskscens 



Distribution. — Limestone area from extreme southern Indiana and 

 Illinois south to Tennessee, Georgia, and central Alabama, westward 

 to southwestern Missouri and northern Arkansas. 



The range is still imperfectly known, but, as indicated by specimens 

 now at hand, it apparently does not meet that of Myotis velifer 

 incautus at any point, nor does it extend east of the Alleghenies. 

 The occurrence of this animal in Kentucky can hardly be doubted, 

 though no specimens are available. This distribution is probably 

 conditioned in part by the presence of* large limestone caves available 

 for permanent habitation, and the occurrence of the caves is in turn 

 dependent on the geological structure of the country. For unlike 

 most other cave-haunting Myotis, of eastern North America at least, 



