S APLUSTBIDjE. 



with gay colours. Ceylon, China, the Mauritius, and the 

 West Indies, are the countries inhabited by the animals 

 of this genus, which is not, however, numerous. in species. 



Species of Hydatina. 



albociucta, V. d. Hoeven. nitidula, Lister. 



circulata, Martyn (vexillum, pliysis, Linn. 



Chem.). virgata, Martyn. 



Genus BULLINA, Ferussac. 



Shell ovate, solid, axis perforated ; spire rather elevated, 

 whorls transversely grooved, with coloured markings; 

 aperture longitudinal, broadly channelled in front ; inner 

 lip thin, adnate to the body-whorl ; columella arched 

 forwards, and obliquely sub-truncate anteriorly; outer 

 lip grooved internally, and with the margin crenulated. 



Syn. Bullinula, Beck. 



Ex. B. undata, Bruguiere, pi. 5b*, fig. 5. Shell, B. 

 undata, fig. 5, a. 



The animal of Bullina is not well known. The shells 

 greatly resemble those of Acteeon, but want the spiral 

 plate of the inner lip peculiar to that genus ; they are 

 transversely grooved and punctate, and are adorned with 

 brightly-coloured bands and undulating lines. The 

 species are few in number, and are from Japan, Cey- 

 lon, and Australia. 



Species of Bullina. 



Bruguieri, A. Adams. undata, Brug. 



scabra, Chem. 



