Color. No appreciable difference in the color of this form and 

 M. lucifugus. 



Measuiimtnts. Total length, 93.5-102; tail vertebrae, 41-46; 

 tibia, 17.3-19.6; foot, 17. 4-18. 4; forearm, 38-40; thumb, 5.5-7; 

 longest finger, 65-71; ear from meatus, 12-13. 5; width of ear, 9-10; 

 tragus, 7-S.2. 



589. yumanensi*. {Visft-rli/io), H. Allen, Mon. N. Am. Bats, 1864, 



p. 58. 



macropus, H. Allen, Proc. Acad. Nat. Scien. Phil., 1866, p. 288. 



nilidits, H. Allen, Mon. N. Am. Bats, 1S93, p. 87. 



Type locality. Old Fort Yuma, California. 



Geogr. Distr. Southwestern United States into Mexico. 



Genl. Char. Size small; calcar distinct, considerably longer 

 than free border of interfemoral membrane, terminating in a well- 

 marked lobule; free border of uropatagium naked; ears moderate; 

 wings from base of toes, but on account of e.\tent of web between 

 toes apparently from side of metatarsus; feet very large and strong 

 as compared with other small American species. (Miller.) 



Color. Above pale wood brown, beneath dirty whitish; fur light 

 plumbeous at base, ears and membrane light brown, those of the 

 wings and uropatagium with white edges. 



Measurements. Total length, 70. 2-83.7; tail vertebrae, 34.9-36.7; 

 tibia, 14.1-15.7; foot, 7.9-8.8; forearm, 33.9-34.4; thumb, 5.2-6.5; 

 longest finger, 55-5-57-8; ear from meatus, 14-14. 4; width of ear, 

 8.2-9.1; tragus, 7-7.6. 



a.—saturatms. {.Vyotis), Miller, N. .\m. Fauna., No. 13, 1897, p. 68. 



Type locality. Hamilton. Washington. 



Geogr. Distr. Oregon, Washington and British Columbia. 



Genl. Char. Similar to J/, yumanensis, but darker. 



Color. Back dark yellowish brown; chin, throat and sides darker 

 than belly; ear and membranes blackish; beneath isabella. 



Measurements. Total length, 77-82.3; tail vertebrae, 30-36.5; 

 tibia, 14-15; foot, 8.3-8.6; forearm, 33-35.3; thumb, 5-6; longest 

 finger, 57-59.3; ear from meatus, 14.3; width of ear, S.g; tragus, 7. 



590. californicus. (Vcspcrtitio'), Aud. & Bach. Journ. Acad. Nat. 



Scien. Phil., 1S42, p. 20. 

 nitidus, H. Allen, Proc. Acad. Nat. Scien. Phil., 1862, p. 247. 



(nee 1893 Mon. Bats.) 

 oregonensis, H. Allen, Mon. N. .\m. Bats, 1864, p. 61. 

 obscurus, H. Allen, Proc. Acad. Nat. Scien. Phil., 1866, p. 281. 

 volans, H. .\llen, Proc. Acad. Nat. Scien. Phil., 1866, p. 282. 

 exilis, H. Allen, Proc. Acad. Nat. Scien. Phil., 1866, p. 283. 



