308 SHELLS AND SHELL-FISH. I ART II. 



SUB-FAM. 5. FUSING. Spindle- Shells. 



Shells generally fusiform and slender ; the base elon- 

 gated ; the spire lengthened and acute ; pillar smooth ; 

 outer lip thin. 



HEMIFUSUS Sw. Unequally fusiform, the spire being 

 shorter than the aperture ; shell ponderous,, coronated 

 with compressed spines ; an internal and ascending 

 canal at the top of the aperture. 



colossus. En. M^th. 427. f. 2. morio. En. Mth.430. f.3,4. 

 pyrulaceus. Ib. 429. f. 6. carnaria. Ib. 434. f. 3. 

 coronatus. Ib. 430. f. 2. cochlidium. Ib. 434. f. 2. 



CHRYSODOMTJS Sw. Bucciniform, but the base pro- 

 duced into a channel shorter than the spire ; whorls 

 ventricose ; smooth, or nearly so.; outer lip thin ; 

 inner lip obsolete. 



dispectus. Ency. M. 26. f. 4. sulcatus. En. Meth. 424. f. 3. 

 argyrostomus. Ib.426.f.5. lignarius. Ib. 424. f. 6. 



Fusus Lam. Shell long, slender ; both extremities 

 much produced : spire attenuated, turreted, and of 

 nearly equal length with the aperture. 



Syracusanus. En. M.423. f.6. tuberculatus. En. M . 423.f.'4. 

 torulosus. Ib. f. 4. aciculatus. Ib. 425. f. 8. 



incrassatus. Ib. 5. longicauda. Ib. 423. f. 2. 



LEIOSTOMA Sw. Equally fusiform, but ventricose in the 

 middle ; shell entirely smooth, almost polished ; in- 

 ner lip thickened and vitreous ; base 

 of the pillar very straight. Fossil 

 only. (fig. 75.) 

 L. bulbiformis. En. Meth. 428. f. 1. 



STBEPSIDURA Sw. Equally fusiform, 

 but the basal portion of the pillar 

 turned outwardly, with a sharp fold 

 at the base of the aperture ; shell 

 costated and sub-coronated ; body- 

 whorl ventricose. Fossil only. 

 S. costata. Sw. En. Meth. 428. f. 2. (Fusus ficulneus Lam.) 



