Title: Aquatic life
Identifier: aquaticlife51920baus (find matches)
Year: 1920 (1920s)
Authors: Bausman, Joseph E
Subjects: Aquariums; Fish culture
Publisher: Philadelphia : J. E. Bausman
Contributing Library: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
Digitizing Sponsor: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library

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Obser\)ations on tKe CKelonians of ISJorth America. X. DR. R. W. 5HUFELDT, C. M. Z. S. I
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Diamond-back Terrapin Malacoclemmys palustris Various classifiers of our terrapins have associated in the genus Mala- coclemmys a number of species to be found in this country, which structur- ally, in several instances, have very little to do with each other. In the present series of articles, Lesueur's Terrapin (M. lesueurii) has already been figured and briefly described. In habits, distri- bution, and in its anatomy, this species is entirely diiTerent from the subject of the present account, which is the widely known Diamond-back Terrapin (M. palustris). This is likewise more or less true of the other representatives of the genus, as the Geographic Terrapin (M. geographica) ; the Kohn's Terrapin (M. kohnii) ; Baur's Terrapin (M. pulchra), and the Ocellated Terrapin (M. oculifera). It is not my intention to present any of these differences in this article, apart from the fact that the Diamond-back is the species which, in its morphology, dis- tribution and habits, departs more widely from what various herpetologists have given as the generic distinctions with respect to other groups of terrapins. It would seem that the Diamond-back has been so named for the reason that it has nothing on its back that in any way resembles a diamond. The usual thir-

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