342 PROCEEDINGS OF TEE MALACOLOG [CAL SOCIEXr. 



Thracia villosiuscula (Macgillivray). 



In the List appears Thracia fragilis, Pennant, but reference to 

 Pennant shows that he only included Tellina fragilis (Brit. Zool., 

 2nd 8vo ed., vol. iv, p. 86, 1777) as of Linne. But he misidentified 

 Liuue's Tellina fraqilis (Syst. Nat., 10th ed., p. 674, 1758), which is 

 included in the British List as Gastrana fragilis. Consequently 

 Pennant's specific name has no validity, and we must fall back upon 

 Anatina villosiuscula, Mac<iillivrav (Ediu. Xew Phil. Jouru., vol. ii, 

 p. 370, pi. i, figs. 10, 11, March, 1827: I. of Harris). 



LUTRARIA MAGNA (Costa). 



Costa proposed a Chama magna (British Conch., 1778, p. 230, 

 pi. xvii, fig. 4), and his name has been commonly rejected in favour 

 of the later Mija ollonga, Gmelin, Syst. IS'at., p. 3221, 1791 (based 

 solely on Chemnitz, Conch. Cab., vol. vi. pi. ii, fig. 12, the latter 

 writer being non-binomial), though tlie identity of the two has never 

 been questioned. 



