CONCHOLOGY. 



131 



Shell. Separated from the Murex on account of having no 

 varix fusiform or subfusiform ; spire middling ; aperture oval, 

 elongated, nearly symmetrical, terminated by a rather long, straight 

 tube, the external edge trenchant, the columellar edge having two 

 or three oblique folds. Inhabits the Indian Ocean and Mediter- 

 ranean Sea. Eight living species. Seven fossil. 



Fasciolaria trapezium. Fasciolaria ferruginea. 



F. aurantica. F. tarentina. 



F. filamentosa. F. tulipa. 



F. coronata. F. distans. 





6. Genus Fiisiis. PI. XI. 



minimal. Entirely unknown. 



Shell. With an epidermis, wrinkled, fusiform or dilated in the 

 middle, prolonged posteriorly by the spire, and still more so ante- 

 riorly by the canal ; aperture oval; the columellar edge straight or 

 nearly so, the exterior trenchant ; a horny and oval operculum . 

 Inhabits the Indian and American seas. Forty -six living species. 

 Thirty-seven fossil. 



Fusus aculeiformis. 



F. contrarius. 



F. longissimus. 



F. laticosta. 



F. collosseus. 



F. tuberculatus. 



F. distans. 



F. incrassatus. 



F. sulcatus. 



F. despectus. 



F. proboscidiferus. 



F. morio. 



F. cochlidium. 



F. raphanus. 



F. polygonoides. 



F. lignarius. 



F. strigosus. 



F. crebricostatus. 



Fusus colus. 



F. Nicobaricus. 



F. tortulosus. 



F. multicarinatus. 



F. antiquirus. 



F. carinatus. 



F. Islandicus. 



F. coronatus. 



F. corona. 



F, filosus. 



F. verruculatus. 



F. Syracusanus. 



F. varius. 



F. afer. 



F. rubens. 



F. Nifat. 



F. buccinatus. 



F. scalarinus. 



-A 



