PLATE \^II. 



Figs. 1-1 />. Clavagella tor res i, n. sp., 



Figs. 2-26. Gastrochcena lamellosa, Deshayes, 



Fig.s. 3-36. Corbida scaphoides, Hiiid.s, . 



Figs. 4-46. Corbula philippu, n. sp., 



Figs. 5-56. Neoera patagonica, n. sp., . 



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