366 



CYFRMWM. 



Ex. A. annulus, LintKsus, pi. 28, fig. 2. Shell, A. 

 moneta, Linnceus, fig. 2, a. 



The genus Aricia forms a natural group of Cowries 

 characterised by the flattened base of the last whorl, the 

 thickened callous lips, and the gibbous back. 



Species of Aricia. 



achatina, Soland. 

 annulus, Linn. 

 Arabica, Linn. 

 Arabicula, Lam. 

 arenosa, Gray. 

 bicallosa, Gray. 

 caput-anguis, Phil. 

 caput-serpentis, Linn. 

 liistrio, Linn. 

 icterina, Lam. 

 Mauritiana, Linn. 



moneta, Linn. 

 mus, Linn. 

 obvelata, Lam. 

 punctulata, Gray. 

 rattus. Lam. 

 Scottii, Brod. 

 scurra, Chem. 

 stercoraria, Linn. 

 sulciclentala, Gray. 

 tessellata. Gray. 



Genus LUPONIA, Gray. 



Shell ovately pyriform, ventricose, smooth, polished ; 

 spire concealed, often depressed; aperture narrow, linear; 

 inner lip plicato-dentate, the plaits often obsolete poste- 

 riorly ; outer lip inflexed and crenate. 



Si/)i. Cypraedia, Sivains. 



Ex. L. tigris, Linnceus, pi. 28. fig. 3. Shell, L. Al- 

 goensis, Gray, fig. 3, a. 



This genus comprises the pyriform Cowries, which 

 usually have a few strong, irregular plaits at the fore part 

 of the columella ; many of the rarest species of the Cowry 

 tribe are included in the Luponia group. 



