122 BUUjETIN 144, UNITED STATES NATIONAL MUSEUM 



MYOTIS THTSANODES MUler 



(SjTionymy under subspecies) 



Distribution. — From southeastern Washington, central California, 

 Arizona, and New Mexico southward to the highlands of Oaxaca, 

 southern Mexico: one record from Missouri. 



Map 8. 



-Distribution of Myotis thysanodes : 1, M. thysanodes thysanodes ; 

 2, M. thysanodes aztecus 



Diagnosis. — General appearance much as in Myotis evotis but size 

 greater, about equalling that of M. velifer (forearm 40.6 to 46.0 mm. ; 

 greatest length of skull 16.2 to 17.2 rmn.) ; tail relatively shorter 

 (average ratio of tail to head and body in 10 specimens from Call- 



