303 



EXPLANATION OF PLATE 52 

 Figure Page 



350. Busycon spiratum (Lamarck), capsule ribbon, egg capsules 



and embryonic shell 165 



Fig. a. Capsule ribbon. Fig. b. Side view. Fig. c. Front 

 view. F^gs. d and e. Embyronic shells, exterior and in- 

 terior view. 



351. Melong-ena corona (Gmelin), egg capsules and embryonic 



shells* 166 



Fig. a. Side view. Fig. b. Front view. Fig. c. Embryonic 

 shells, exterior and interior views. 



352. Fasciolaria papillosa Sowerby, egg capsules and embryonic 



shells 168 



Fig. a. Front view. Fig. b. Top view. Fig. c. Embryonic 

 shells, exterior and interior views. 



Egg capsules of Marginella apicina Menke and Odostomia impr'essa 

 Say attached to egg capsule of Melongena corona (Gmelin). 



