58 On some New Marine Mollusca. 



and placed vertically ; whorls 6, exclusive of the virtex, last 

 and last but one rounded and tri-striate, the rest granulose, 

 margined towards the base and canaliculate above (this 

 channel transversely striate) ; aperture pyriform, lip thin 

 reflexed. 



BiTTiUM SEMIL.EVIS, n.s. B. t minuta, turrita, castanea ; 

 conspicue eleganterque carinis et costulis clathrata ; anf. 

 12, quinque apicalihus Icevihus, nitentihus, hasi Iceva, lahro 

 tenui. Long. 5, Lat. 1. N.W. Tasmania. 



Shell minute, turreted, pale chesnut, conspicuously and 

 elegantly latticed with keels and ribs ; whorls 12, the apical 

 5 smooth, shining base, smooth lip, thin. 



The smooth apical whorls are peculiar, and perhaps this 

 portion is decollated with age. The only specimen known 

 to me is in the Melbourne National Museum. Possibly it 

 would come under some of Mr. Adams' genera near to 

 Cingulina. 



LiOTiA MINIMA, n.s. L. t. minuta, orhiculari, spira parmn 

 exserta, alba, p>ellucida, sfiraliter striata, apertura valde 

 incrassata, uonhilico granis nitentihus niarginatis. 



This very minute Liotia seems devoid of ornament, except 

 the regular spiral groove. It has, however, a remarkably 

 thickened varix round the aperture, and a granularly mar- 

 gined umbilicus ; in all which respects it differs from any 

 species known to me. 



Thalotia Marine, n.s. T. conica simillimi sed j^cf^^^lo 2^ar- 

 viore, carinulis haud granulosis, striis inter carinulis latis, 

 rotundatis, luteis ; lineis alhis longitudinalihiis, angtdar- 

 iter undulosis et maculis roseis, et flammulis roseo piir- 

 pureis, vel atro-purpnreis variegata; ap>ertura suhquadrata, 

 intus argentea, lirato, columella haud dentaia. Long. 17, 

 Lat. 12. 



Differing from T. conica, Gray (with which shell it has been 

 hitherto confounded) in not being granular, though the 

 peculiar spotted colouring makes it appear so. It is almost 

 regularly tesselate on the upper part of the whorls. It 

 is more tumid, solid, and darker in colour than T. picta, 

 Wood, and T. p^idchella. Not uncommon in Hobson's Bay, 

 though much more numerous outside Port Phillip Heads. 

 I have never known it to occur in Western Victoria or 

 Tasmania. 



Thalotia tesselata, n.s. T. t. parva,suhur)ibilicata conica, 

 pallide olivacea, alba maculata vel tessellata ; anfr. 7, sub^ 



