24 OLIVA. 



mens figured show the extreme variations to which this 

 species is subject. 



122. Okbignyi (f. 458), Marrat. — Ovato-subfusiformis, 

 fusco-plumbea, uonnunquam medio unifasciata ; spira, bre- 

 viter conica, balteo pallido fusco-flammulato ; columella 

 arcuata, lrevi, plicis calli antici 4-5 approximatis ; apertura 

 intus fusca ; labio tenui, margine pallido. — Allied to 0. 

 biplkata, but the folds, the colour, and the form, all differ 

 from that species. 



123. zenospika (f. 291, 292, 293), Duclos.— Late ovata, 

 subcaarulea, fusco punctata, flammulata, vel maculata ; spira, 

 late turbinate, callosa, balteo carinato postice luteo flamtnu- 

 lato, antice maculato ; columella callosa, prope callum anti- 

 cum tenuiter plicata, ad terminum uniplicata; apertura 

 brevi, intus coloribus externis picta ; labio tenuissimo. — 

 This pretty little shell is either spotted or marked with 

 zigzag lines, and, the lip being thin, the same pattern shows 

 brightly through. 



124. micans (f. 294, 295, 296), Solander. — 0. zcnospirce 

 simillima, haud tantum ventricosa, postice plerumque tu- 

 midior, lineis longitudinalibus elongatis angulatim undulatis 

 notata, plicis calli antici duabus aut tribus, una plicato- 

 striata. — The upper part is generally tumid, and the folds 

 on the basal callus double or treble. 



125. mille-punctata (f. 297 to 300), Budus. — Ovato- 

 subconica, postice tumida, antice lateribus compressis alba 

 aut fulva, punctis minutissimis in fasciis duabus angulatim 

 dispositis ornata, aut fere omnino castaneo-grisea ; spira 

 conica, callosa ; columella callosa, lasvi, callo antico uni- 

 punctato, uniplicato, supra plicam tenuiter striato ; labio 

 tenui, diaphano. — There is a gradation in form between 

 this and the two preceding species. 



126. gibbosa (f. 301 to 310), Bom. — Late turbiuata, vel 

 ovata, vel anguste cylindraceo-acuminata, grisea, alba aut 

 fulva, fusco aut griseo nebulata et variegata, ad suturam 

 maculata ; spira, callosa, anfractu penultimo rotundo lato ; 

 balteo duplicato, latissimo, postice aurantio-fulvo, fusco- 

 flammulato, antice carinato albo, arcuatim maculato ; colu- 

 mella, postice valide callosa, infra medium pauciplicata, 

 callo antico biplicato, plica postica, striata; apertura intus 



