SOUTH AFRICAN MARINE MOLLUSKS. 205 



Family TELLINIDAE. 



Genus TELLINA Linnaeus. 



TELLINA VIDALENSIS Sowerby. 



Cat. No. 66, U.S.N.M., four specimens collected by William 

 Stimpson on the North Pacific Exploring Expedition in False Bay. 



TELLINA ALBINELLA ALFREDENSIS, new subspecies. 



Plate 46, figs. 7, 8. 



Shell similar in outline and coloration to the rose-colored form of 

 T. albinella Lamarck, but differing from it in being much heavier, 

 and in having the angulated posterior dorsal area much narrower, 

 which renders the posterior end of the shell much more pointedly 

 beaked. The radiating sculpture is also much coarser than in 

 albinella. 



Cat. No. 186948, U.S.N.M., contains the type which comes from 

 Port Alfred (Coll. No. 318). The type measures: Length, 46.8 mm.; 

 altitude, 25.5 mm. Cat. No. 249859, U.S.N.M., contains another 

 valve from the same locality (Coll. No. 1131). 



TELLINA NATALENSIS Krauss. 



Cat. No. 186949, U.S.N.M., one valve from Port Alfred (Coll. No. 

 319). 



TELLINA PONSONBYI Sowerby. 



Three lots of this species are in the collection of the United States 

 National Museum, all from Port Alfred, as follows: Cat. No. 186950, 

 two specimens (Coll. No. 320); Cat. No. 249860, three specimens 

 (Coll. No. 1132); Cat. No. 249885, three very young specimens (Coll. 

 No. 1157). 



TELLINA TRIANGULARIS Chemnitz. 



Cat. No. 98046, U.S.N.M., one specimen from Albany. In addi- 

 tion to this, there are two lots in the collection of the United States 

 National Museum from Port Alfred, as follows: Cat. No. 186951, 

 two specimens (Coll. No. 321); Cat. No. 251031, one very young 

 valve (Coll. No. 1548). 



TELLINA REGULARIS Smith. 



Cat. No. 186952, U.S.N.M., three specimens from Port Alfred (Coll. 

 No. 322). 



TELLINA, species? 



Cat. No. 251037, U.S.N.M., is a young valve of a Tellina which I 

 am unable to identify, from Port Alfred (Coll. No. 1554). 



TELLINA, species ? 



Cat. No. 251050, U.S.N.M., is a valve from Port Alfred, belonging 

 to the section of rounded-valve Tellinas having radiating red bands, 

 which I am unable to identify. On account of its worn condition I 

 refrain from describing it as new (Coll. No. 1367). 



