SOUTH AFRICAN MARINE MOLLUSKS. 95 



bands posteriorly, and half as wide anteriorly. They are of the same 

 color as the interior of the aperture, while the dark areas are yellow- 

 ish brown. The outer edge of the columellar callus is also smokily 

 tinted. 



NYCTILOCHUS, species ? 



Cat. No. 250437, U.S.N.M., contains a ponderous species from Port 

 Alfred, which is too badly worn to be properly identified. (Coll. No. 

 1310.) 



Genus CRYOTRITONIUM Martens. 



CRYOTRITONIUM MURRAYI Smith. 



Cat. No. 206005, U.S.N.M., one specimen from Agulhas Bank, 

 South Africa. 



Genus ASPELLA Moreh. 



ASPELLA ANCEPS Lamarck? 



Cat. No. 186791, U.S.N.M., two specimens from Port Alfred (Coll. 

 No. 154). These are not like our A. anceps Lamarck from the west 

 coast of America, the type locality, but the specimens before us are 

 too poor to be properly diagnosed, so I let them stand under the name 

 under which they have appeared in the past from South Africa. 



NEPIONIC SHELLS. 



Cat. No. 249727, U.S.N.M., contains three nepionic shells belonging 

 to the Cymatiidae, from Port Alfred (Coll. No. 999). 



Family CASSIDIDAE. 

 Genus CASSIS Lamarck. 



CASSIS ACHATINA Lamarck. 



Cat. No. 43078, U.S.N.M., one from Cape of Good Hope. Cat. No. 

 77298, U.S.N.M., two from the same locality. Cat. No. 97976, 

 U.S.N.M., eight from Kleinemond, Albany. Cat. No. 186792, 

 U.S.N.M., one from Port Alfred (Coll. No. 155). 



CASSIS ZEALANICA Lamarck. 



Cat. No. 18400a, U.S.N.M., one from Cape of Good Hope. Cat. No. 

 187025, U.S.N.M., one from Port Alfred (Coll. No. 561). Cat. No. 

 227778, U.S.N.M., one specimen from the same place (Coll. No. 

 873.) 



CASSIS PYRUM Lamarck. 



Cat. No. 95, U.S.N. M., one specimen collected by William Stimpson 

 on the North Pacific Exploring Expedition at Simons Bay. Cat. No. 

 18400, U.S.N.M., one from Cape of Good Hope. Cat. No. 18802, 

 U.S.N.M., one from Port Elizabeth. 



