Abstract
Five hundred and twenty-one short-tailed shrews, genus Blarina , from Illinois together with 125 from South Dakota, Iowa, Kentucky, Tennessee, and Ohio, were studied using multivariate analyses of morphometric characters. Two groups of shrews are readily distinguishable with no overlap in size. There are two places of sympatry in southern Illinois. The two groups represent the species Blarina brevicauda and Blarina carolinensis . Within the range of B. brevicauda , there is clinal variation from Ohio, across Illinois, to Iowa and South Dakota, but there is sufficient reason to recognize two subspecies, B. b. kirtlandi and B.b. brevicauda .
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