Archive image from page 718 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 is generally divided into two lips, which, being separated, present with some degree of ac- curacy, although much contracted, the sem- blance of the locomotive plane of certain Gas- teropoda. When this structure occurs, the Fig. 359. foot is said to be bifid, as in Nucitlu, Trigonia. It is said to be flattened when it is thin and laterally depressed, as in Tellina and Donax; to conclude, it is designated as bent when it consists of two portions connected at


Archive image from page 718 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 is generally divided into two lips, which, being separated, present with some degree of ac- curacy, although much contracted, the sem- blance of the locomotive plane of certain Gas- teropoda. When this structure occurs, the Fig. 359. foot is said to be bifid, as in Nucitlu, Trigonia. It is said to be flattened when it is thin and laterally depressed, as in Tellina and Donax; to conclude, it is designated as bent when it consists of two portions connected at an angle with one another (b, fig. 359), of which the genera Cardium, Nncula, and Trigonia present examples. Various other modifications, of less importance than those we have particularized,


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