34 SYSTEMATIC ARRANGEMENT 



4. FtJLGORARIA. 



Shell oyate, fusiform, striated ; spire conical ; nucleus small, 

 regular ; mouth elongate ; pillar with a central thickening, covered 

 with many irregular oblique plaits ; canal rather produced, open. 

 Animal ? Teeth ? Operculum ? 



1. F. chinensis. Voluta rupestris, Adams, Gen. Moll. t. 18. f. 6. 



5. Cai/lipara. 



Shell oblong ; spire short ; nucleus small ; mouth linear ; pillar 

 with two small plaits in front. Animal ? 



1. C. bullata, Adams, Gen. Moll. 1. 17. f. 6, shell only. 



** Mantle enclosed; inner lip of shell defined, not expanded; 

 pillar lip with five or sine strong subequal plaits. Operculum 

 horny, distinct. 



6. Voltjta. 

 Shell ovate, striated, covered with a thin periostraca ; spire conic ; 

 nucleus small, regular, spiral ; mouth elongate ; pillar with some 

 large (four or five) oblique plaits in front, and more transverse ones 

 behind. 



1. V. musica. 



*** Mantle enclosed ; inner lip regular ; front of pillar with two 

 or three oblique plaits and some small ones behind. Opercu- 

 lum 1 Teeth — — 1 



7. Lyrta. 

 Shell fusiform ; spire conic ; whorls plicated ; pillar lip with 

 numerous small plaits behind the two larger front ones. Animal 

 ? Operculum 1 



§ Outer lip moderate ; inner lip smooth. Lyria. 



1. L. festiva. 



2. L. lyriformis. 



3. L. mitrseformis. 



§§ Outer lip moderate ; inner lip with numerous cross grooves. 



4. L. costata. 



5. L. Delesserianai, 



§§§ Outer lip thickened behind, with a convex varix and strong 



internal central rib ; inner lip smoothest. Enseta. 

 6*. L. harpa. 



