Proceedings of the United States National Museum . of PUcotus townsendii Cooper (western section): 1, P. t. fal-lescens; 2, P. t. townsendii. Solid symbols, specimens examined; open symbols, otherrecords; encircled symbols, type localities. Cross-hatching indicates known areas ofintergradation between subspecies (between pallescens and townsendii in California,Nevada, Idaho, Oregon, Washington, and British Columbia; between pallescens andingens in northern Texas, Oklahoma, and Kansas; and between pallescens and australisin western Texas, Chihuahua, and Coahuila). Size averages medium for the s
Proceedings of the United States National Museum . of PUcotus townsendii Cooper (western section): 1, P. t. fal-lescens; 2, P. t. townsendii. Solid symbols, specimens examined; open symbols, otherrecords; encircled symbols, type localities. Cross-hatching indicates known areas ofintergradation between subspecies (between pallescens and townsendii in California,Nevada, Idaho, Oregon, Washington, and British Columbia; between pallescens andingens in northern Texas, Oklahoma, and Kansas; and between pallescens and australisin western Texas, Chihuahua, and Coahuila). Size averages medium for the subgenus; forearm averages relativelylong. Rostrum averages relatively long, dorsolaterally inflated, andusually not particularly depressed; anterior nares relatively large andusually rounded posteriorly (dorsal view). First upper incisor nor-mally without secondary cusp; upper canine averages less robust thanin northern populations; anterointernal cingular cusp of P* frequentlypresent. Measurements: See tables 10, 16. AMERICAN BATS—HANDLEY 187. 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, butaverages darker, browner, and less cinnamon dorsally. P. t. australisaverages 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 oflatitude and elevation inhabited. The greatest divergence noted is inspecimens from San Andres, Jalisco, in which the rostrum is unusually 18
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