The book Mollusca Freshwater Gastropoda Pelectpoda was written by author Hugh Berthon Preston Here you can read free online of Mollusca Freshwater Gastropoda Pelectpoda book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Mollusca Freshwater Gastropoda Pelectpoda a good or bad book?
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32, figs. 3, 4 (as Trapezaideusfoliaceus). Original desertion : Shell small, rather thick, somewhat ovate Bounded before, basal and dorsal lines nearly straight, post basal point rounded. Epidermis olivaceous, greenish in young shells, brownish in old specimens, and frequently bleached. Beaks very small, pointed, low, and in- curved, with fine zigzag radial sculpture, which extends a little down the shell, and especially down the post slope ; in dirty or eroded specimens hardly to be noticed. T...he shell is a little inflated, the post I'idge rounded. Inside the nacre is soft cream or white. The left valve has two cardinals, the anterior blade- like, and the posterior much smaller and tubercular. The laterals are double (or even inclined to be trifid) ; in the right valve the cardinals are split or double, and the laterals single. The anterior cicatrices are confluent, and also those of the posterior. Long. 25, lat. 40 mm. Hob. Burma. " The shell is stouter, shorter, and more inflated than T.
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