2o6 SoiitJicni Cross. 



front 1ms :i iloul»lo (mI^'c niid is somewhat produced or auriculate on 

 encii side, and is ('otnjdetcly concealed lieneath the enormously 

 develo])ed n(»taeum. The measurements <,nven above are only 

 ajiitroximate. as, owinii; to contraction of the animals at the time 

 of death, the form and natural dimensions become altered and 

 diminished. 



LAMELLARIA CONICA. 



(I'l. XXIV., Iicr. 1.) 



Testa ovata, sujicrne acuniinata, coiiica, tenuis, pellucida, periostraco tenui jialliflo 

 iiiiliit.i, lineis imrenionti curvatis consi>icuis sculpta; anfractus fiuatiinr, celeriter 

 aocrescentes. dvio sii]>crioies r]irot()Concha) flavescentes, aliis crassiores, coii- 

 vexiusculi, ultimus maxiinus, ventiicosus, infra suturani anguste niarginatus; 

 aiiertura magna, inverse late auriformis : ]K?ristoma tenue, niargino fdliimellari 

 arc'iiatn, leviter incra-ssato, callo teniii ajjpreso labro jiincto. 



Lungit. 18 iiiiii., diani. 14 mm. A|)ertnra 14 longa, 10 lata. 



Hohitat. — Cape Adare, 28 fathoms. 



Only a single specimen of this interesting species was obtained. 

 The animal is much contracted in spirit and of a buff colour, but when 

 alive is said to be reddish-brown. The mantle investing the shell is 

 very thin above, but thicker at the sides, and in the contracted state 

 has a granose or finely warty appearance. The foot is short, some- 

 what quadrate in front and tapering behind. The tentacles are very 

 short and blunt, the eyes at the outer bases being conspicuous and 

 prominent. The apical whorls exhibit one or two spiral shallow 

 sulci, but this feature mav not be constant. 



NATICA DELICATULA. 



(PI. XX I v., fig. fi.) 



Te.Htn ginbosa, tenuis, anguste ]ierf<)rata, i>ellucid<>-albida, jieriostraco dilute virescente 

 tenui induta, lineis incremcnti tenuilms obliquis striata ; spira obtusa ; anfractus 

 tres celeriter rrescentcs, convexiusculi, ultimus globosus, infra sutiuam conoave 

 imjiressus, antice de«cendons : a]K'rtuni somicircularis ; labrum tenue; columella 

 incrassata, rellexa, Kui>eme leviter dilatata, labro callo teiuii junct<a. 



Diam. niaj. 7.i mm., min. mm., alt. 1\ mm. AjKirtura G nim. lon<;a, 3i mm lata. 



Oiwrcidum tenue, testaceuni, extus leviter concavum, album, infra flavescens. 



lldhilnt. — C^ape Adare, 2(1 fathoms. 



The single specimen obtained has the spire much eroded. The 

 suture dividing the whorls is rather deej), but hardly channelled. 



