0L1VA. 



quinqueplicato ; apertura intus alba ; labio abraso. — A very 

 familiar cream-coloured shell, reticulated and at the suture 

 fasciculated with purple-brown zigzag lines. 



29. violacea (f. 56), Marrat. — Ovato-subcylindriea, pal- 

 lide fulva, lineis angulatis fuscis et punctis notata, ad sutu- 

 ram fasciculata; spira breviuscula, conica, balteo subcari- 

 nato, flammulia fuscis ornata; apertura lata, intus pallide 

 purpurea; columella sublasvigata, callo antico angusto valide 

 quadriplicate, labio pauci-punctato. — One of those peculiar 

 shells that resemble many species, but cannot be distinctly 

 assigned to any. 



30. c*rulj;a (f. 48-50), Eolten; 0. episcopalis, LamJc. — 

 Crassa, cylindraceo-ventricosa,utrinque obtusa,lactea, punctis 

 aurantiis et lineis ctefuleis longitudinalibus notata (variat 

 maculis trigonis fuscis picta), balteo flammulato ; columella 

 tumida, plicis vix elevatis, callo antico tumido, plicis crassis 

 validis rugato ; apertura intus violacea; labio crasso, extus 

 abraso. — Fig. 48 represents 0. lugubris of Lamarck. 



31. emicator (f. 57-60), Meuschen; 0. cruentata, Sol. ; 

 maculata, Duclos ; guttata, Lamlc. ; aurata, Link, amethys- 

 tiua, Bolten. — Subfusiformis, crassa, albida, maculis angu- 

 laribus varie picta; spira pyramidata, anfractibus planulatis, 

 fasciculis linearum fuscarum marginatis, balteo purpureo 

 maculato vel flammulato ; columella distanter et valide pli- 

 cata, callo antico solido, plicis tribus aut quatuor distinctis 

 rugato ; apertura intus subaurea ; labio crasso, extus abraso. 

 — The spots are all angular, whatever their size and how- 

 ever disposed. The columella plaits are unequal, sometimes 

 duplicated. 



32. Peruviana (f. 61-65), Lamh.; O. Senegalensis, Lamk. 

 — Latai, turbinata, frequenter angulata, purpurascens, ple- 

 rumque strigis undulatis fuscis ornata ; spira planulatim 

 conica; columella subcarinata, vix plicata, callo antico an- 

 gusto biplicato ; apertura lata, intus subrosea, ; labio crasso, 

 ad medium concavo. 



33. Stainporthii (f. 66, 67), Reeve. — Ovato-subfusiformis, 

 lactea, lineis angulatis longitudinalibus pallide griseis et 

 maculis paucis castaneis angularibus in fasciis duabus dis- 

 positis picta; spira depresso-convexa, balteo flammulato; 

 columella omnino valide et crebre plicata, plicis calli antice 

 quatuor distinctis. 



