134 RAPANINvE. 



Species of Cuma. 



Africana, Mart. muricina, Blainv. 



carinifera, Lam. quadrata, Jonas. 



cuspidala, Adams and Reeve. rugosa, Quoy. 



dtadema, Lam. sacellum, Chem. 



Grateloupiaua, Petit. tectum, Chem. 



Gravesii, Brod. tliiarella, Lam. 



imperialis, Blainv. tvigona, Lam. 

 kiosquiformis, Duel. 



Genus RAPANA, Schumacher. 



Shell ventiicose, axis perforated to the apex ; spire 

 depressed ; aperture oval, narrowed anteriorly ; canal 

 open, slightly recurved; inner lip reflected, free ante- 

 riorly; umbilicus corrugated. 



Ex. R. bezoar, Linn^us, pi. 14, fig. 4. Operculum, 

 R. bulbosa, Solmtder, fig. 4, a, 4, b. Shell, R. bezoar, 

 fig. 4, c. 



The operculum of Rapana is of the Purpura type, 

 and the shell is ventricose and umbilicated. The animals 

 frequent the coral-reefs of tropical countries, and most 

 probably feed upon the polyps that construct them. 



Species of Rapana. 



bezoar, Linn. coronata, Lam. 



bulbosa, Soland. muricata, Brod. 



Sub-gen. latiaxis, Swainson. 



Shell with the axis very widely perforate ; whorls more or less 

 detached, carinated; aperture trigonal. 



Fortuni, A. Adams. nodosa, A. Adams. 



MawiB, Gray. pagoda, Jonas. 



