38 OLIVA. 



200. compta (f. 432), Marrat. — Elongato-fusiformis, alba, 

 pellucida, castaneo flauimulata et fasciata ; spira elongata, 

 apice nonnunquam livido ; balteo albo ; columella callosa, 

 antice oblique uniplicata, infra medium arcuata ; labio tenui. 

 — Resembling 0. pelludda } but may be known by the moro 

 elongated form, the callous columella, and the single promi- 

 nent fold at the base. 



201. bulldla (f. 433, 434), Reeve. — Subovata, quara 

 0. pura magis ventricosa et solida, alba, immaculata, vel 

 flammulis fuscis trifasciatim dispositis variegata ; sutura 

 punctata. — This is the West Indian analogue of the South 

 American 0. tehuelchana, D'Orb. Mr. Reeve had not seen 

 the finely coloured specimens of his shell, which he describes 

 as pure white. 



202. tehuelchana (f. 457), I)' Orb. — Anguste subfusiformis, 

 alba; spira. elongata, acuminata; columella antice uniplicata. 

 — A pure white fusiform little shell, with one basal colu- 

 mellar plait, and intermediate in form between 0. bullula 

 and 0. pura. 



203. voldtelloides (f. 435), Marrat. — Volutasformis, alba, 

 pallide violacea, iufra suturam et supra balteum fasciata ; 

 spira brevissima, acuta ; balteo latiusculo, subelevato ; colu- 

 mella Uevi, rotunda, antice ad terminum uniplicato ; labio 

 tenui, rotundato, leviter expanso. — Resembling 0. rosalina, 

 but with a single fold on columella. 



204. eosalina (f. 436), Duclos. — Ovato-fusiformis, alba, 

 lineis distantibus longitudinalibus undulatis fuscis notata ; 

 spira late conica, anfractibus convexiusculis, balteo albo; 

 columella arcuata, laavi, plicis calli antici duabus frequenter 

 rosaceis. — This differs from O. inconspicua, Ad., and 0. volu- 

 telloides in form. They have all coloured folds occasionally, 

 but none of them always. 



205. inconspicua (f 437), Adams. — Alba, pallidissime 

 purpureo bifasciata, oblique subcylindracea, ad margineni 

 sinistrum antice oblique contracta ; spira breviuscula, lata, 

 anfractibus prominentibus, sutura lata, acutimarginata ; co- 

 lumella ad terminum uniplicata; labio antice dilatato. — My 

 shell agrees with the specimens deposited by the describer 

 in the British Museum. Its short spire and ovate form 

 serve to distinguish the species. 



