268 VERTEBRATE ANIMALS OF THE UNITED STATES 



Ci Upper premolars 2 (on each side) 5. Nycteris. 



Co Upper premolars i . 



di Mandibular tooth-row more than 8 mm. long 6. Dasypterus. 



do Mandibular tooth-row less than 7 mm. long 7. Nycticeins. 



ao Ears very large and united at base in front. 



bi Nostrils simple 8. Euderma. 



ho Nostrils with a high ridge behind each 9. Corynorhinus. 



I. Myotis Kaup. Small, slender bats with a long tail, a hairy face 



and narrow ears; dentition 2/3, i/i, 7^/7^, 



A ^'^n^%5^--->5r-=^^ i/^'- ^° species, cosmopoKtan ; 12 species 

 ly \/v'<-'^*^ jj^ ^Yie United States. 



B ^*4aeM^0^ K ^^^^!'":^»«"(LeConte). Little brown 



^ '^=^=N^<5^^--i=iK=:=/^ bat (Fig. 149). Body brown m color; 



Fig. 149.— Teeth of Myotis luci- length 87 mm.; tail ^8 mm.; fore arm 38; 



fugus: A, left side of upper jaw; B, 1 i 1 1 • 1 i- 



left side of lower jaw (from Miller), cars short and broad and when laid for- 

 ward reach about to the nostrils: entire 

 United States, except the coastal regions of the Pacific slope north of 

 Puget Sound; common, especially towards the south. 



Subspecies of M. lucifugus 



M. I. lucifugus (LeC). Entire country, except the Rocky Moun- 

 tains and the Pacific coast. 



M. I. longicrus (True). Body larger: Puget Sound region and east- 

 ward to Wyoming and southward to Arizona and southern California. 



M. suhulatus (Say). Color hght brown; length 85 mm.; tail 38 

 mm.; fore arm 35 mm.; ears slender and when laid forward reaching 

 considerably beyond tip of nose: North America, east of the Rockies; 

 common; number of young at a birth 2. 



M. velifer (J. A. Allen). Color dull sepia; length 95 mm.; tail 44 

 mm.; forearm 41 mm.; ears short, reaching to the nostril when laid 

 forward: the Mexican border. 



M. incautus (J. A. A.) . Like M. velifer but with a more paUid colora- 

 tion: San Antonio, Texas. 



M. baileyi Holhster. Like M. velifer but smaller: White Mountains, 

 New Mexico. 



M. grisescens Howell. Like M. velifer but darker: Marion County, 

 Tennessee. 



M. occultus Holl. Color glossy brown; length 96 mm.; tail 40 mm. : 

 San Bernardino County, California. 



M. carissima Thomas. Color blackish; length 81 mm.; tail 36 mm. : 

 Yellowstone Lake, Wyoming. 



