SOUTH AFEICAN MARINE MOLLUSCA. 29 



Margin ell a biplieata Kraiiss.. 



Marginella biplieata Kranss- : Martens, ' Tiefsee- 

 Exped./ p. 37, PI. Ill, fig. 6. 



Hab. — Cape Coast (Krauss). 



This and the four following species were figured for the 

 first time in the above work. M. chrysea of Watson 

 (Sowerby, 'Marine Shells S. A./ p. 20) is a synonym of 

 this species. It was described as having three columellar 

 folds, and on this account Martens hesitated to unite it with 

 biplieata. Having examined the types of chrysea and 

 compared them with the figure of biplieata given by 

 Martens, I feel no hesitation in pronouncing them the same 

 species. One of the two '•'Challenger" examples of chrysea 

 has a very faint third fold, but the other specimen has 

 practically only the slightest trace of it, so that if this existed 

 in Krauss's examples, it was probably overlooked or not 

 considered worthy of notice. The yellowish tint described 

 by Watson has almost faded away, so that the shore speci- 

 mens, such as Krauss probably had before him, would most 

 likely be destitute of colour also. 



Marginella zeyheri Krau.ss. 



Marginella (Gibberula) zeyheri Kmuss : Martens, 

 ' Tiefsee-Exped.,' p. 34, PI. Ill, fig. 4. 



Marginella pura Sinifli, M. of Malac.,' vol. xi, p. 31, 

 PI. II, fig. 18. 



Hab.— Off Cape, 177 fathoms (Martens); Port Alfred 

 (Smith). 



When describing this species, under the name of M. pura, 

 I had not seen Martens' figure of zeyheri, and from Krauss's 

 original description, unaccompanied by any figure, it was 

 impossible to know what the form of his shell reallv was. 



Marginella neglecta Soirerhi/. 



Marginella (Gibberula) reevei Krauxs : Martens, 

 ' Tiefsee-Exped.,' p. 35, PI. Ill, fig. 3. 



