On some Neio Marine Mollusca. 57 



ribs smooth^ rounded, slightly raised, obtusely angular above, 

 obsolete anteriorly ; suture well impressed, aperture narrow, 

 oblong ; outer lip thin, inner lip reflected. Very rare. 



Differs from M. coonpta of N.S.W. in the ribs being 

 closer, and the absence of spiral striae. The general form 

 is also different. 



Mangelia trachys, oi.s. M. t. parva, fusiforme turrita, 

 ojxoca, solida, alba, maculis fulvis consjoicue nebulosa ; 

 anfr. 7 (2 apical. Icevihus, alhis, ohtusis) crebre crassicostatis 

 et conspicue liratis : liris supra castas transeuntibus, et ibi 

 nodosis, costis in uU. anfr. 9 ; sutura bene hnpressa, uni- 

 lirata; aperturoj oblonga, subqiiadrata, labro conspicue 

 incrassato, postice frofunde sinuato, sinuobliquo, columella 

 simplici, canali brevi. Long. 6, Lat. 2. Brighton. 



M. shell small, fusiformly turreted, opaque, solid, white, 

 conspicuously clouded with fulvous spots; whorls seven 

 (the two apical smooth, white, obtuse), abundantly costate 

 with thick ribs and very conspicuously lirate ; the lirse pass- 

 ing over the ribs and there nodose ; ribs in the last whorl 

 nine ; suture well impressed, with one fine raised line : 

 aperture oblong, subquadrate, outer lip conspicuously 

 thickened, deeply sinuous posteriorly; sinus oblique, colu- 

 mella simple, canal short. 



The sinus, instead of going back into the shell, is confined 

 to the thickened lip, and is oblique to the aperture. 



RissoiNA Kershawi, n.s. R. t minuta, yupceform, sub- 

 cylindracea, fulvo saturata ; anfr. 6, tumide convexis 

 oblique crebre costatis, apice obtuso, apertura subcentrali, 

 orbiculata, labio refiexo. Long. 3, Lat. vix. IJ. Long Bay, 

 Tasmania. W. F. Petterd. 



Shell minute pupseform, subcylindrical, saturated fulvous 

 brown, whorls 6, tumidly convex, obliquely closely ribbed ; 

 apex obtuse, aperture subcentral, orbicular, lip reflexed. 



The aperture, which is almost central under the axis, and 

 the uniform brown colour, distinguish this species. 



RissoiNA SUPRASCULPTA, n.s. R. t. minuta, pyramidata, 

 alba, opaca, apice mam^m^ilato et verticaliter sito ; anfr. 

 (vertice excluso) 6, ultimo et penult, rotundato S-striato, 

 reliquis granulatis, bashn versus onarginatis, supra suturcts 

 canaliculatis (canalic. transverse striata), apertura pyri- 

 forTYii, labio tenui, refiexo. Long. 4, Lat. IJ. Long Bay, 

 Tasmania. 



Shell minute, pyramidal, white, opaque, apex mammilated 



