Molliisca. 205 



EATONIELLA PALUDINOIDES. 



(PL XXIV., fig. 18.) 



Testa ovato-conica, perforata, fuscescens, lineis incrementi tenuibus striata ; spira 

 ad apicem obtusa; anfractus 4, valde convex! ; apertura irregulariter ovato- 

 rotundata, leviter obliqua ; peristoma continuum, margine externo simplice, 

 tenui, columellari oblique, vix refiexo. 



Longit. \\ mm., diam. 1 mm. Apertura f longa, \ lata. 



Habitat. — Cape Adare, 8 fathoms. 



Allied to E. suhrufcscens (Smith), from Kerguelen Island, but of a 

 more robust form, the body-whorl being broader, and the apex of the 

 spire more obtuse. The opercula are very similar on both surfaces. 



RISSOA ADARENSIS. 



(PI. XXIV., fig. 17.) 



Testa oblongo-ovata, supra angustata, alba, laevis, nitida, rimata, hie illic ilines 

 incrementi striata; spira elongata, ad apicem rotundata, obtusa ; anfractus -1^, 

 valde convexi, sutura leviter obliqua sejuncti ; apertura obliqua, ovato-piriformis, 

 longit. totius ^ adaequans ; peristoma continuum, margine externo leviter 

 incrassato, columellari antice expanso, effuso. Operculum tenue, paucispirale, 

 simplex. 



Longit. 2f mm., diam. 1^ mm. 



Habitat. — Cape Adare, 24 fathoms. 



A pure white shell, with a smooth surface, except that in the 

 upper whorls there is a trace of faint longitudinal costation. 



LAMELLARIA MOLLIS. 



(PI. XXIV., figs. 19-21.) 



Animal globosum, subpellucidum, albidum ; cutis dorsalis (notaeiim) crassissima, 

 laevis, antice supra caput subprofuiide fissa ; i)es dilute coriaceus, elougatus, 

 postice angustatus, antice truncatus, utrinque productus, margine anteriore 

 duplice vel transversim svdcato; tentacula mediocriter brevia, acuminata, 

 oculis parvis leviter prominentibus ad basim externam instructa ; testa mem- 

 branacea. 



Longit. 65 mm., diam. 45 mm., alt. 40 mm. 



Habitat. — Cape Adare, 6-29 fathoms. 



In spirits this species has a globose, somewhat gelatinous 

 appearance, and is remarkable on account of the shell being mem- 

 branous only, without any shelly thickening, so that on removal 

 from the spirally coiled viscera it at once collapses. The foot in 



