786 



Deshayes has not arrived at the same conclusions as Mr. Hanley 

 and myself. 



C. Planatella, C. immaculata, and C elliptica of Lamarck, should 

 have been added to the list of species not identified. 



The following species are new, and are figured in Plate CLXVIII. 



Sp. 121. C. grata (pi. clxviii. f. 218), Besliayes. Mr. Cuming's 

 collection. 



Sp. 122. C. planisidcata (pi. clxviii. f. 216), Sowerhy,jim. ; like 

 C. lyra, but with the ribs flatter and larger in proportion to 

 the size of the shell, which is also less oblique. Mr. Hanley's 

 collection. 



Sp. 123, C. albo-dorsata (pi. clxviii. f. 212, 213), 8owerhy,jim. ; 

 resembling C. spathdata and C. Sinensis, but more pointed 

 and less broad at the hinder part. Mr. Hanley's collection. 



Sp. 124. C. lineolafa (pi. clxviii. f. 214, 215), Sowerby, jun. ; 

 like C. Venetiana, but having a remarkable livid spot, like 

 the commencement of a ray on the anterior side of the apex. 

 The lunule and dorsal area are prettily marked with red 

 cross lines. Mr. Hanley's collection. 



Sp. 125. C. simplex (pi. clxviii. f. 217), Soiverby,jii,n. 



Circe. 

 Circe plebeja was previously named C. sulcata, Gray. 



Tapes. 



T.fiiictuosa, sp. 74 (Suppl.). Our shell must be difierently named, 

 as the true T.flnctuosa of Gould is the shell which we now 

 figure (pi. clxviii. f. 167). 



T. rarijlamma, sp. 1, is dura, Gmel. 



T. paptl'ionacea, sp. 2, is V. rotunda, Gmel. 



T. rimosa, sp. 11, is JJ. iindulata. Born. 



The following new species are figured in Plate CLXVIII. 



Sp. 76. T. anatiiia (pi. clxviii. f. 165, 166), Sowerby, jun.; 

 wrongly named virginea by Pliilippi. Mr. Hanley's collec- 

 tion. 



Sp. 77. T. inaqualis (pi. clxviii. f. 164), Sowerby, jun, ; so named 

 from the unequal strength of its decussated striae. Mr. 

 Hanley's collection. 



