GASTEROPODA : 



479 



MURICID.E, OR MUREX FAMILY. This Family is rep- 

 resented by about nine hundred living, and about seven 

 hundred fossil species of gasteropods. They are preda- 

 tory on other mollusks. Marine. 



Fig- 385- 



Fig. 386. 



Murex tenuispina. Lam. One half. 



Moluccas. 



Fig. .,87. 



Pyrttln canaliculata, Linn. 

 One half. United Statas. 



Fig. 3 38. 



Tritonium pyg-m&um. Gould. 

 New England. 



Ranella granifera, Lam 

 Two thirds. Australia. 



BUCCINIM:, OR WHELK FAMILY. This Family con- 

 tains gasteropods which have the shell notched in front, 

 or the canal abruptly reflected. There are about one 

 thousand living, and three hundred and fifty fossil spe- 

 cies. They are marine and carnivorous. 



