O OLIVA. 



17. Jamaicensis (f. 26), Marrat. — Subcylindracea, utrin- 

 que subrotunda, obtusa, fulvo-rubesceus, obscure bifasciata, 

 lineis crebris longitadinaliter fluctuatis et super fascias ma- 

 culis nigrescentibus trigouis notata ; balteo fusco lineato ; 

 columella plicata, callo antico angusto, plicis 5 aut 6 validis 

 tinctis ; apertura violacea, ; labio crasso punctato, intus 

 abraso. — Different in form, colour and markings from the 

 rest of the group. 



18. geaphica (f. 36), Marrat. — O.venulatce (sp. 21) similis, 

 magis ventricosa, crassior, lineis punctatis acute angulatis ad 

 suturani fasciculatis notata. — The figure will show the pecu- 

 liarly dotted angular markings, upon which, with the more 

 obese form, Mr. Marrat appears to found the species, as 

 distinct from 0. venulata. 



19. poecea (f. 35), Marrat (oheslna, Reeve). — Quam 0. 

 venulata (sp. 21) crassior, brevior, lineis punctatis inter- 

 rupts. — Allied to the 0. venulata as figured by Duclos. 

 Mar. Does it differ from 0. graphica ? — Ed. 



20. Pindarina (f. 33, 34), Duclos, 01. t. 16, f. 7, 8.— Quam 

 0. venulata (21) magis turbinata, etiam subangulata, intus 

 pui-purascens ; labio intus extusque abraso. — More angular 

 than 0. venulata, with thickened outer lip. 



21. venulata (f. 31, 37), Laiuh. — Subcylindrica, ante sutu- 

 rani subrotunda, pallide violaceo nebulata et inter maculas 

 albas trigonas punctata, fasciis duabus macularum semiluna- 

 rum cincta, ad suturam lineis fuscis fasciculata; columella ad 

 terminum leviter tincta, fere omnino plicata, plicis calli an- 

 tici 4 latis profunde incisis ; labio externo vix incrassato, 

 extus punctato. — 0. Pindarina differs from this in the cha- 

 racter of the markings, not having the bands of semilunar 

 spots; in the shape, being more angular at the shoulder, 

 and in the greater thickness of the outer lip. 



22. polpasta (f. 42, 43), Duclos, 01. pi. xvi. f. 1, 2.— Lata, 

 turbinata, antice truncata, solida, lacteo-lutescens, obscure 

 cseruleo bifasciata, angulatim lineata et punctata, ad sutu- 

 ram fasciculata ; spira, conica, brevi ; columella fere omnino 

 plicata, callo antico 4-5-plicato, ad terminum macula fusca 

 plerumque rotata. — The broad, turbinated form of this fasci- 

 culated group. — Ed. 



