COOKE: ON THE MACANDREW COLLECTION. 371 



Adeorbis subcarinatus Mont. Tenby. 

 Label in Bean's handwriting. 



Trichotropis boreal is B. and S. Oban, Zetland, &c. 



Aporrhais pes-pelecani L. Carnarvon Bay. 



A. pes-pelecani L. var. albida. Zetland, 80 f. 



A. pes-pelecani X. monstr. 



One of these specimens is very remarkable. A 

 second wing^ or rather spike, projects behind the ordinary 

 wing, which is abnormally thickened by many calcareous 

 layers which are flaky and could be peeled off. The 

 second or older spike is evidently 'dead' and is almost 

 hidden by barnacles, but the continuation of the rib of 

 the body whorl leaves no doubt as to its true character. 

 No doubt the shell met with a grave accident when 

 almost mature; instead of the damaged wing being 

 repaired, a new wing or something approaching a wing 

 was made. 



A. MacAndrese Jeffr. Zetland. 



Six mature, two immature. Labelled A. pes-carbonis 



Brogn., which is a tertiary fossil. 



Cerithium metula Lov^n. Zetland. 



Two perfect specimens, one imperfect. 



C. reticulatum DaCosta. Clyde, &c. 

 Largest specimen "55 long. 



C. perversum L. Sandwich. 



Cerithiopsis tubercularis L. Scilly, &c. 



Purpura lapillus L. Anglesea, &c. 



P. lapillus L. Caldy Island. 



P. lapillus L. var. imbricata. Rhoscollyn. 



A very large series (45) of this beautiful variety. 



P. lapillus L. var. major. Swansea. 



P. lapillus L. var. major. Southampton. 

 Length: 2 "3 inches. 



