Fio. Sod. 



PROSOmiANCHIATA. 409 



FlO. 558. 

 FIG. 557. 



Ranella. granifera, 



Lam. Reduced. 



Australia. 



Tritonium pygmcrum, 

 Gould. New Euglf nd. 



Fitsus decemcostatus, Say. 

 United States. 



front, are called the Siphonostoma, and are mainly Car- 

 nivorous gastei'opods. These include the Strombidne 



FIG. 560. 



Fin. n. 1 ;!). 



Whelk, or Ruccinum utulatum, L. 

 North Atlantic. 



tlarpa ventriwm. Lamarck. 

 Reduced. Mauritius. 



(Stt'omlus, Pteroceras, etc., Figs. 553, 551) ; the Muricidae 

 (Murex, Ranella, Tritonium, Pyrula, Fusus, etc., Fi^s. 

 554, 556, 557, 555, 558); the Bnccinidse (BuGcinum^ fit- 

 18 



