PEOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 31 



ORDINARY MEETING. 



Fkiday, November 10th, 1893. 



E. A. Smith, F.Z.S., etc., Vice-President, in the Chair. 



The following were elected Members of the Society: — D. D. 

 Baldwin, Dr. 0. Boettger, Prof. Spiridon Brusina, J. E. Cooper, J. C. 

 H. Crosse, W. H. Dall, and Rev. Prof. H. M. Gwathin. 



The following papers were read : — 



1. "Descriptions of twelve new species of Shells, chiefly from 

 Mauritius," by G. B. Sowerby, P.L.S., etc. 



2. "On a specimen of Xenophora pallidula, Reeve, from the Indian 

 Ocean, with attachments of several species of Pleurotomidm, including 

 a new form," by G. B. Sowerby, P.L.S., etc. 



3. " On three new species of Shells from the Indian Ocean," by 

 G. B. Sowerby, F.L.S., etc. 



4. "Note on the possibility of the acclimatization of Crepidula 

 forntcata in the British seas," by B. Sturges Dodd, communicated by 

 the Secretary. 



[absteact.] 



The author stated that in February, 1887, two barrels of American 

 oysters were received by a firm in New Basford. Amongst the debris, 

 or attached to shells of the oysters, were several dozen examples of 

 Crepidula and Anomia, and in a few instances he found that the animal 

 was still alive. Seeing that oysters from America are relaid in the beds at 

 Cleethorpe and elsewhere, Mr. Dodd did not consider it would be a matter 

 of surprise if species common on the east coast of North America should 

 become acclimatized. . 



5. "On the alteration of the generic name Clausilia,^^ by G. F. 

 Harris, F.G.S. 



■[abstract.] 



In 1778 Da Costa (Hist. Nat. Test. Brit. p. 107) employed the name 

 Strombiforim's to designate certain land and marine mollusca, his first 

 species," and therefore the type of the genus, being Turbo perversus, Linn. 

 (Syst. Nat. ed. 12, p. 1240, No. 650). 



In 1805 Draparnaud (Hist. Nat. Moll. Terr, and Fluv. pp. 24, 29 and 

 68) described a genus, Clausilia, his type being Helix bidens, Miiller (Hist. 

 Verm. pt. 2, p. 116). 



Now it appears that these two types belong to one and the same genus, 

 and that, therefore, the name Strombiformis must by the law of priority 

 be adopted instead of Clausilia. 



6. " Notes on the British Chitons," by E. R. Sykes, F.Z.S. 



Mr. G. B. Sowerby exhibited specimens in illustration of his papers; 

 also a group of Ostrea cochlear (a well-known Mediterranean species) 



VOL. I. — march, 1894. 3 



