226 



amplo, brevi. Long. |; hit. \ poll. Found on a coral ledge, Oler 

 monl Tonnerre, Paumotu Islands. 

 Very much like .V. / 



Lottia oNYciiiNA. T. deformis, tenuis, depressa, rotundato- 

 ovata, costis obsoletis radiantibus ad 20, et gradibus increment] con- 

 fertia laxis not at a: apice subcentrali, croso : extus cinerea, intcr- 

 spatiis costarum plerumqne fusco-olivaceis : intns lutea castaneo 

 variegata; margine acuto, irregulari. Long, i ; lat. .', ; alt. \ poll. 

 Probably from the coast of Peru, though marked Kio Janeiro. 



They resemble depressed specimens of L. seabra. 



Rimula [Puncturella] cognata. T. conica, alba, radiatim costn- 

 lata ; apice incurvato: apertura rotundato-ovalis. Dredged in 1G 

 fathoms water, Orange Harbor. Couthouy. 



Similar to R. conica, D'Orb., but less elevated, and the ribs more 

 regular. 



Capulus sagittifek. T. parva, tenuis, lucida, Candida, semi- 

 globosa, apice mediano, dextrorsum inclinato, acuto: extus lineis 

 lacteis radiantibus, papillas sagittatas gerentibus insculpta: apertura 

 sub-circularis : cavositas profunda; cicatricibus bene impressis et 

 septo filiformi junctis. Diam. - 1 ; alt. ^ poll. Habitat uncertain. 



Well distinguished by its radiating lines, made up of chains of 

 arrow-heads. 



Pekoxia irrorata. Corpus elongato-ovale, convexum, tlavo et 

 olivaceo nubeculatum, granulis confertis instructum, marginibus 

 dilatatis, plicis radiantibus ad decern quasi denticulatis : caput pro- 

 tractum, Iateraliter dilatatum, cceruleum; tentacuhs curtis, gracilibus, 

 capitatis; coeruleis : solea trientem latitudinis corporis adequans. 

 Long. 1 ; lat. A ; alt. \ poll. In tide-pools, Bay of Islands, New Zea- 

 land. Drayton. 



May be compared with P. patelloidea, but differing in color, form, 

 marginal projections, &c. [Genus Onchidella; also two next species.] 



Peroxia acjcnosa. Corpus elongatum, sub-cylindraceum, postice 

 angustatum, ad extremitates rotundatum, papillis beryllinis ornatum : 

 solea dimidiam longitudinis corporis adequans, fusco-violacea ; tenta- 

 cular cyaneae. Long. 1£ ; lat. j? poll. Inhabits Feejee Islands. 



Remarkable for its mulberry-like surface and amethystine color. 



Peronia cokpulenta. Corpus linguiforme, convexum, suprii 

 cyaneum, infra olivaceum, tuberculis magnis elevatis rotundatis 

 (minoribus circumjacentibus) instructum; veli marginibus undulatis ; 

 cucullo cordato ; tentacuhs elongatis, linearibus, viridibus : solea pal- 

 lida \ longitudinis corporis adequans. Long. 2£ ; lat. 1; alt. ^ poll. 

 Found at Direction Island, one of the Feejees. 



