Proceedings of the United States National Museum . MALE FEMALE ¥ NUMBER OF SPECIMENS IN SAMPLEOBSERVED RANGEOBSERVED MEAN 2 STANDARD ERRORS dEITHER SIDE OF MEAIj - -• — 2 STANDARD DEVIATIONON EITHER SIDE OF M^ LEGEND I Figure 17.—Gilecotus mexicanust. NA SOUTHERN ARizcna NORTHERN VALPARAISO MTS.,ZACATECAS SANTA ROSA, MEXICO GUANAJUATO MORE LOS OAXACA DURANSO OKLAHOMA VIRSINIA COAHUILA KANSAS WEST VIRGINIA NUEVO LEON. ¥- NUMBER Of SPECIMENS IN SAMPLEOBSERVED RANGEOBSERVED MEAN . 2 STANDARD DEVIATIONSON EITHER SIDE OF MEAN 17.—Greatest length (in(lower »et of f
Proceedings of the United States National Museum . MALE FEMALE ¥ NUMBER OF SPECIMENS IN SAMPLEOBSERVED RANGEOBSERVED MEAN 2 STANDARD ERRORS dEITHER SIDE OF MEAIj - -• — 2 STANDARD DEVIATIONON EITHER SIDE OF M^ LEGEND I Figure 17.—Gilecotus mexicanust. NA SOUTHERN ARizcna NORTHERN VALPARAISO MTS.,ZACATECAS SANTA ROSA, MEXICO GUANAJUATO MORE LOS OAXACA DURANSO OKLAHOMA VIRSINIA COAHUILA KANSAS WEST VIRGINIA NUEVO LEON. ¥- NUMBER Of SPECIMENS IN SAMPLEOBSERVED RANGEOBSERVED MEAN . 2 STANDARD DEVIATIONSON EITHER SIDE OF MEAN 17.—Greatest length (in(lower »et of figur mm.) o( ikulll o( •pccimeni of PImluj lomstndii (upper •et of figurn) and Plia«t<), arranged in geographic sequence from northwest to south, thence lo northeast. AMERICAN BATS—HANDLEY 145 3. No other two species of the subgenus were known to be sympatric. 4. Relatively few specimens have been available for study. Until recently,both species were represented only in the National Museum. The TexasCooperative Wildlife Research Unit has had an example of each species since 1942;the Museum of Zoology, University of Michigan, has had both since 1946 (skinsand skulls of P. townsendii; P. mexicanus in alcohol); and the Museum of NaturalHistory, University of Kansas, has had both since 1948. 5. With the exception of the type series of P. mexicanus (preserved as dry skinsand skulls), all early collections of Mexican big-eared bat
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