RISSOIDJl. 115 



40 Andatnans, Bombay, Galle and Mauritius; coll. W. T. Blanford, J. B. 

 Baxter, and G. Nevill, Esqrs. 



I am not clear wlietlier this is, or is not, a distinct species 

 from the preceding \_F. cerithina] ? They seem to me to run 

 one into the other ! Certain it is, however, that Mr. A. Adams 

 identified as F. scabra, indubitable specimens of F. cerithma^ 

 which had been dredged by Mr. Mc Andrew at Suez ! The sculp- 

 ture of the Japan forms appears somewhat coarser, and with 

 one transverse stria less. 



10 Hongkong ; coll. R. Hungerford, Esq. 

 6 Katliiawar; coll. F. Fedden, Esq. 



4. Penella sp. 



2 Hongkong ; coll. R. Hungerford, Esq. 

 Something like F. reticulata^ A. Adams. 



5. Fenella sp. 



3 Hongkong; coll. R. Hungerford, Esq. 



6. Fenella [?] n. sp. 



1 Andamans ; coll. G. Nevill, Esq. 



Probably one of the most minute marine Mollusca in exist- 

 ence. 



7. Penella virgata. 



Rissoa virgata, FMlippi, Zeits. Mai. 1849, Suez, Aden, <^c., and Descr. 

 de VEgypte, pi. Ill, fig. 29, long. 2, 



This is almost certainly one of A. Adams' species, perhaps 

 his F. pupoides ? 



var. [?] 



2 Mauritius ; coll. G. Nevill, Esq. 



var. [?] 

 1 Mauritius; coll. G. Nevill, Esq. 



