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EXPLANATION OF PLATE 47 

 Figure Page 



325. Sinnm macnlatum (Say) 125 



Fig. a. Exterior view. Fig. b. Interior view. 



326. Lamellaria cochinella L. Perry 126 



327. Lamellaria leucosphaera Schwengel 126 



Fig. a. Exterior view. Fig. b. Interior view. 



328. Lamellaria koto Schwengel 127 



329. Crepidula forulcata (Linne), egg capsules and embryo 131 



Fig. a. Embryo. Fig. b. Empty capsule. Fig. c. Side view. 



