26o 



Shell Life 



{0. norvegica) is a paler shell with a larger body- 

 whorl and mouth, the outer lip expanding outwards, 

 and the canal short. It is only found on some of our 

 northern shores, as those of Yorkshire, Durham, and 

 Northumberland, below the coralline zone. Its 

 average length is 4J inches. The egg-capsules are 

 not clustered, but attached singly by the flat side, 

 chiefly to the interior of empty bivalves. 



Turton's Spindle-shell {C. turtoni), or Long-neck, 

 is somewhat larger and more solid than the last, 

 more nearly white, tinged with purple, and further 

 diflering from it in having a longer spire, flatter 



stronger 



spiral 



triangle 



ridges ; 

 with 



IS more 

 rounded. 



moreover, the 

 rounded base, 

 rhomb-shaped. 

 The Slender 

 truly spindle- 



whorls, and 



operculum is a long 



whereas in G. norvegica it 



with three of the corners 



Spindle - shell (G. gracilis) is more 



shaped. Beneath the yellowish epidermis, which is 

 usually partly gone, the shell is 

 white or nearly so, with some 

 approach to a glossy surface ; 

 and the operculum is rather 

 solid and triangular-oblong. Its 

 length is between 3 and 4 inches, 

 with a breadth of IJ to IJ 

 inches. Although found in from 

 20 to 145 fathoms all round our 

 islands, it is a rare shell in the 

 south and a common one in tlie 

 north. The capsules are solitary, 

 like those of the last named. A 



similar but smaller species (G. ]jropinquus) may be 



distinguished by its " more delicate texture, finer and 



Slender Spindle-shell 



