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. Hight living species. Seven fossil. 
Fasciolaria trapezium. Fasciolaria ferruginea. 
F. aurantica. F. tarentina. 
F. filamentosa. F. tulipa. 
F. coronata. F. distans. 
6. Genus Fusus. Pl. XI. 
Animal. 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. Fusus colus. 
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. 
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. 
