164 BULLETIN 144, UNITED STATES NATIONAL MUSEUM 



Cranial measurements of Myotis caUfomicus — CJontinued 



MYOTIS SUBULATUS (Say) 

 (Synonymy under subspecies) 



Distribution. — North America from central New England west- 

 ward to eastern Oregon and Washington, and thence south to Lower 

 California, Arizona, and northern Sonora. The limits of the range 

 can not as yet be exactly defined. 1 



Diagnosis. — In size and general proportions about as in Myotis* 

 caUfomicus (average ratio of tail to head and body in 16 specimens, 

 94.3; average ratio of foot to tibia in 16 specimens, 43.4), but thumb 

 longer, the wrist and thumb together usually 8 to 8.5 mm. instead 

 of 6 to 7.5 mm., teeth larger, and skull with noticeably flattened 

 brain case ; fur of back often with a decided gloss. 



Ear. — The ear is similar in shape to that of Myotis caUfomicus 

 but slightly larger. Laid forward it reaches the tip of the snout 

 or exceeds it by about 1 mm. Tragus slender, tapering, half the 

 height of the ear with a small rounded lobe at the base cut off by a 

 shallow notch. Both its margins are without crenulations. 



