212 Proceedings of the Biological Society of Washington. 
i^.RizoxA: Chiricahna Mts., 1; Fort Wliipple, 1; Keam Canyon, 1 ; 
Little Spring, 2; San Francisco Mountain, 2. 
Chihuahua; Colonia Garcia, 1 ; San Francisco Canyon, 1. 
Remarks. \ arious specimens from tlie interior of California (three of 
them from the southern part of the State kindly placed at my disposal 
by Dr. Joseph Grinnell) have the color characters of Myolis longicrus 
interior. IVhether or not they are strictly referable to this race is a 
question which can not for the preseiit be decided. 
Myotis longicrus amotus subsp. nov. 
Type.—Adult female (skin and skull). No. 54,437 U. S. National Mu¬ 
seum (Biological Survey Collection). Collected at Cofre de Perote, Vera 
Cruz, Mexico (altitude 12,500 feet). May 27, 1893, by E. W. Nelson. 
Original number, 4873. 
Characters.—Externally like Myotis longicrus interior (onlj^ known 
specimen slightly darker and more red than in any of the specimens of 
the northern form yet seen, its color best de.scribed as a dark, reddish, 
tawny-olive); skull with palate narrowed and braincase reduced; teeth 
normal except that the upper canine is slightly more robust than in the 
other races, its diameter appreciably greater as compared with that of 
palate. 
Measurements.—TygQ-. head and body, 54; tail, 44; tibia, 18; foot, 8.6; 
forearm, 39 ; thumb, 6 ; third finger, 76 ; fifth finger, 55 ; condylobasal 
length of skull (teeth moderately worn), 13.8; zygomatic breadth, 8.8; 
lachrymal breadth, 5.0 ; breadth of braincase, 7.0 ; occipital depth, 5.2 ; 
mandible, 10.2; maxillary toothrow, 5.2; mandibular toothrow, 5.8. 
Specimen examined. —The tyjie. 
