204 POPULAR BEITISH CONCHOLOGY. 



" More the wonder grew, 

 That one small head could carry all he knew," 



you are astonished tliat so small a box can contain so large 

 an animal. 



The young shells are very different from the mature ones, 

 being very thin, with a wide aperture, more like a Bnlimiis 

 than what they afterwards become. 



The account given by Mr. Adams of the fry of C, anmduSj 

 although referring to a different shell, may still be true as 

 regards our species, as these, like many other molluscs, 

 differ from each other much less in their young state than 

 when more advanced. No doubt Avhen the fry of C. Eu~ 

 rojpcea comes to be well known, we shall find it to corre- 

 spond with the following account of the Singapore sliell. 

 Mr. Adams observes that he had an opportunity " of observ- 

 ing the fry. In the course of growth these fleshy expan- 

 sions become entirely absorbed, and do not ultimately con- 

 stitute the lobes of the mantle, which embrace and partly 

 cover the shell in the adult." 



II. OvuLUM. — In this genus the edges of the aperture of 

 the shell are not toothed as in C7/pr(Ba, aad in the two Bri- 

 tish species the outer lip is not reflected. As in CyprcRa, the 

 animal, when walking, covers over a great part of the shell 



