COOKE : ON THE MACANDREW COLLECTION. 357 



Pholas crispata L. Britain. 

 Pholadidea papyracea Turt. Torquay. 



Largest specimen i'25 inches broad, exclusive of 

 calciform process. 

 P. papyracea Turt. Portland. 

 P. papyracea Turt. var. Torquay. 



Smaller and stronger. 

 Xylophagadorsalis Turt. Clyde. 



Three valves. 

 X. dorsal is Turt. No locality. 



In situ. 

 Teredo Norvegica Spengl. Torbay. 



Pallets only. 

 T. naval is L. Yarmouth. 



As T. marina Sellius. 

 T. megotara Hani. Seaford. 

 T. megotara Hani. Swansea. 



[Not indigenous are T. malleolus Turt. (Seaford), T. 

 bipennata Turt. (no locality), and T. palviulata Lam. J 



GASTEROPODA AND PTEROPODA. 



Of about 248 marine shell-bearing Gasteropoda, there are in 

 the collection 208. The minute species naturally constitute the 

 main body of the absentees. If we were to leave Rissoa^ Odos- 

 tomia and Cerithiopsis out of the reckoning, the proportion would 

 be about 187 to 167. The general rarity of the species not 

 included will be gathered from the following list. One of them 

 (Triton cutaceus) I can supply from my own collection, having 

 found several dead specimens at Herm. 



