418 



THE OCEAN WORLD. 



to the top. In most collections of these pretty shells we find the 

 Staircase -shell (Solarium perspecticum) of Lamarck, from the Indian 



Fig. 236. Solarium perspecticum. Fig. 237. Solarium perspecticum. 



Ocean (Figs. 236, 237), the diameter of which is sometimes two inches 

 and a half. The Australian Sun-dial (S. variegatum, 

 Linnaeus, Fig. 238) is another species frequently 

 seen in collections : it is as much variegated above 

 as below, of a white and rusty brown. The minute 

 trellised Sun-dial, which is only ten lines in diameter, 

 comes from the coast of Tranquebar. 

 The eleventh family, Turritellidse, types Vermetus and Turritella, 



Fig. 238. Solarium 

 variegatum. 



Fig. 239. Turritella 

 replicata (Linnaeus). 



Fig. 240. Turri- 

 tella angulata 

 (Sowerty). 



Fig. 241. Turritella 

 sauguinea (Reeve), 



Fig. 242. Turn- 

 tella goniostoma. 



Fi?. 243. Turri- 



tel'a terebellata 



(Lamarck). 



