268 CAPULID.E. 



End. Couch gives the same habitat ; and Peach noticed 

 this species as found by him at Gorran, in Cornwall ; but 

 he appears to have mistaken for it the young of F. Grceca. 

 Better evidence is wanting of F nubecula being British ; 

 it is not uncommon in the Mediterranean. This is the 

 F. nimbosa, afterwards F. rosea, of Philippi (but appa- 

 rently neither of Lamarck's species bearing these names) , 

 and F. Philippii of Requiem 



Family III. CAPU'LID^E, Fleming. 



Body conical or cap-shaped : mantle entire : head snout- 

 like, furnished with jaws and a stout spinous tongue : tentacles 

 awl-shaped, widely separated : eyes placed on slight bulgings 

 or tubercles, about halfway up the tentacles at their outer 

 bases : gills forming a single plume or row of slender elongated 

 leaflets, and seated in a large cavity behind the head : foot 

 fleshy and rounded. 



Suell cap-shaped and tumid : epidermis velvety : beak 

 spiral, turned towards the posterior side, curling downwards, 

 and twisted to the left : mouth round or transversely oval, with 

 an irregularly sinuated margin. 



The beak or apex of the shell is turned to the rear 

 and always spiral, as in the last family ; in the Patellidce 

 it is turned to the front, and only spiral or curved in the 

 very young state. In Gray's system the present family 

 and the next are arranged in a different group from that 

 which contains the Patellidce, and the latter family is 

 separated by Dentalium from the Fissurellida?. 



Genus CA'PULUS* De Montfort. PI. VI. f. 5. 



Generic characters the same as those of the family. 



These mollusks adhere to stones and old shells in the 

 coralline and deep-water zones. They probably never 



* A receptacle. 



