142 



Eobe., Soutli Australia, and then imagined it to be the young 

 of T. undulatus. I am now of opinion it is a full grown shell 

 from specimens brought to me by my industrious friend and 

 collector, Augustus Simson, to whom I have dedicated it. 

 Common at George's Bay Heads, A, Simson ; and Blackman's 

 Bay, W. F. Petterd. 



No.29. Carinidea TASMANiCA. U.S. U.t. 2Mrva, orhiculafa ,vaklede}iressa, 

 anijuste, umhilicata, tenui, sordkle virente, aliquando cdbida nitente sed 

 scepius rosea incrusta ; anfr. 5, obsolete oblique costatis et striatis, ad iieriph. 

 conspicue carinaUs, carina acuta, undulosa, iri'egulariter dentata ; apert. 

 ciy-cularl, fauce riianiaritacea, labio medio acute sinuato, lahro arcuato 

 conspicue reflexo, iimhilico j)artim obfegente, basi convexa tubercidis obsolete 

 ornata. Operculo calcareo, extus spirale albo nucleo castaneo ; ult. anfr. 

 convexo incrassato. Mag. diam. 8, min. 7, alt. 4. 



Shell smaU, orbiculoT greatly depressed, narrowly um- 

 bilicate, thin, sordidly green, sometimes whitish shining, but 

 often encrusted with a rose coloured nullipore, whorls five 

 obsoletely obliquely ribbed and striate, conspicuously keeled 

 at the periphery, keel acute, undulose, irregularly toothed, 

 aperture circular, throat pearly, lip acutely sinuate in the 

 middle, inner lip arcuate, conspicuously reflected, partly 

 covering the umbilicus, base convex ornamented with obsolete 

 tubercles, operculum calcareous, spiral outside white, with a 

 chestnut nucleus, and the last whorl convex and thickened. 

 Common on the east and south coasts, and probably South 

 Australia. I have always hitherto regarded this as a young 

 variety of Troclms aureus, Jonas (Lahio), but the form is so 

 constant and so very distinct that I have decided on des- 

 cribing it a distinct shell. Careful observations on its 

 growth can alone settle its position finally. The operculum 

 is nearly always in situ. 



"No. 30. GiBBULA MULTicARiNATA. Ti.s. G.t. jKirvu, orbiculafa, sub- 

 depressa, solida, nitente, pallide castanea, fulro pu7ictata et nebulosa ; 

 anfr. 4, carinatis et liratis, (ca7'inis in ult. anfr. 4); interstitiis liratis ; 

 carina ad perlpheriam majtiscida ; ad suturam tjranosa et regidariter 

 fulvo pu7ictata ; apice albo, kavi ; basi convexa, subdistanterlirata ; mnbillco 

 spiraliter striata, albo marglnato ; apertura subquadrata ; labro j^roducto, 

 tenui ; columella crassiuscida, obsolete tuberculatu. Maj. diam. 8, min. 0, 

 alt. 5^ mil. 



A small orbicular, depressed solid shell, shining and pale 

 chestnut in colour, but more or less spotted and clouded with 

 brown ; whorls four, keeled and lirate (four keels in the last 

 whorl) ; interstices lirate ; keel at the periphery somewhat 

 larger ; granular and regularly brown spotted at the suture ; 

 apex white, smooth ; base convex, rather distantly lirate ; 

 umbilicus spirally striate with a white margin ; aperture sub- 

 quadrate ; outer lip produced, thin ; columella rather thick 

 and obsoletely tuberculate. N. W. Coast. E. Gunn. Differing 



