190 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



Size averages large; forearm averages relatively long; skull of 

 heavy construction; rostrum relatively long, inflated, and not de- 

 pressed; anterior nares average relatively large and rounded in 

 posterior outline (dorsal view). First upper incisor usually with at 

 least a trace of a secondary cusp; anterointernal cingular cusp of 

 P* absent; molariform teeth robust. 



Measurements: See tables 10, 16. 



Comparisons: Bats of the race P. t. ingens are the most reddish 

 and the largest of P. townsendii. From P. t. pallescens, the only 

 geographically adjacent race of this species, ingens is distmguished 

 by darker, more orange or reddish coloration, average larger size, 

 relatively larger auditory bullae, more inflated rostrum, relatively 

 more robust molariform teeth, and more frequent development of a 

 secondary cusp on the first upper incisor. 



For comparison with P. t. virginianus see account of that sub- 

 species (p. 202). 



Remarks: The Ozark form is similar to both P. t. virginianus to 

 the eastward and P. t. pallescens to the westward. Specimens of 

 P. t. pallescens from western Oklahoma and south-central Kansas 

 approach P. t. ingens in size and coloration, although they are more 

 like typical P. t. pallescens. 



Specimens examined: A total of 18 from the following U.S. 

 localities : 



Arkansas: Washington County: Basset Cave, near Hicks, Is (UAZ) ; Devil's 

 Icebox, Devil's Den State Park, 25 miles southwest of Fayetteville, 2s (CNHM), 

 9s (UAZ), Is (USNM), Is (GF); Hewlitt Cave, 12 miles west of Fayetteville, 

 2s (UAZ), Is (USNM). Missouri: Stone County: No exact locality, la 

 (AMNH). 



Plecotus townsendii pallescens Miller 



Synotus macrotis H. Allen, 1864, p. 63. (Part.) 



Synotus townsendi H. Allen, 1864, p. 65. 



C[orynorhinus] macrotis H. Allen, 1865, p. 174. (Part.) 



C[orynorhinus] townsendi H. Allen, 1865, p. 175. 



Corynorhinus macrotis pallescens Miller, 1897, p. 52. 



Corynorhinus macrotis intermedius H. W. Grinnell, 1914, p. 320. (Part.) 



Corynorhinus megalotis megalotis G. M. Allen, 1916, p. 338. (Part.) 



Corynorhinus megalotis pallescens G. M. Allen, 1916, p. 341. 



Corynorhinus rafinesquii pallescens H. W. Grinnell, 1918, p. 340. 



Plecotus rafinesquii pallescens Blair, 1952, p. 96. 



Corynorhinus t[ownsendii] pallescens Handley, 1955c, p. 147. 



Holotype: USNM (Biol. Surv. Coll.) 66534; adult female, sldn 

 and skull (crushed); collected 3 August 1894 by A. K. Fisher; Keam 

 Canyon, Navajo County, Ariz.; collector's No. 1715. 



Distribution: Western United States, northwestern Mexico, 

 and southwestern Canada, including parts of the Great Plains, Rocky 



