Careful study of an extended series of the Prairie Snail, Bulimulus, in the Southe1rn Methodist University Collection, reveals so much intergradation between some of the sub specific forms that identification is nearly impossible. We have presented below some of our observations, and the conclusions derived from our study. We hope that they will aid in clarification of the taxonomic position of several questionable subspecies of Bulimulus.
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Hall, Clarence and Pittman, Leslie
"Taxonomic Status Of Bulimulus (Mollusca, Gastropoda) In Texas,"
Field and Laboratory: Vol. 17
Available at: https://scholar.smu.edu/fieldandlab/vol17/iss2/1