AMERICAN BATS — HANDLEY 



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Figure 23. — Distribution of Plecotus townsendii Cooper (eastern section): 1, P. i. ingens; 

 2, P. t. virginianus. Solid symbols, specimens examined; open symbols, other records; 

 encircled symbols, type localities. Cross-hatching indicates known areas of intergrada- 

 tion between subspecies ingens and pallescens. 



Comparisons: P. t. australis is most similar to P. t. pallescens, but 

 averages darker, browner, and less cinnamon dorsally. P. t. australis 

 averages larger in most cranial dimensions than Arizonan P. t. pal- 

 lescens, but can be scarcely distinguished cranially from other popula- 

 tions of P. t. pallescens. 



For comparison with P. mexicanus, see account of that species. 



Remarks: Mexican populations of P. townsendii are relatively uni- 

 form in coloration and cranial characters despite the wide range of 

 latitude and elevation inhabited. The greatest divergence noted is in 

 specimens from San Andres, Jalisco, in which the rostrum is unusually 



