156 



interstitiis tenuiter, confertissime, undulose striatis ; intus nitente albida smpe 

 pallide fulvo nebulosa vel radiata ; spatula nulla ; margine acuta, leviter 

 undulata, linea pallide fulva eleganter fimhriata. Diam. maj. 26, min. 22, 

 alt. 7, mil. 



A white silky species ; porcelainous inside and delicately 

 margined with light brown, not unlike the Chinese umbrella 

 shell, but smaller. The fine scabrous ribs are gathered some- 

 times into a bundle, which thus forms a compound rib. It is 

 very different from any other southern form, and rare. North 

 Coast, W, F. Petterd. 



No. 74. TuGALiA Tasmanica. n.s. T.t. magna, crassa, ovata, postice 

 attenuata, antice planato, alia, tumide rotundata, convexa, sordide alba, apice 

 rotundato (eroso) submedlano ; radiatlm eleganter crebre costata costis parvis 

 numerosis, alternantibus etirregul. rugose crenulato clathrata,lineis incrcmenti 

 concentricis ; marginibus crassis, sinuato arcuatis, crebre tuberculis crenu- 

 latis; pagina interna alba, castanea, jiallide nebidosa, polita ; sinu lato, incon- 

 ipicuo. Long. 37, lat. 25, alt. 15. 



A very thick large solid Tugalia with many alternating ribs, 

 and rugose irregular sinuous lines of growth. The inside is 

 white, polished and clouded with chestnut. Only one specimen 

 collected. North West Coast, W. F. Petterd. There is a shell 

 very like this in the Nat. Mus., Melbourne, and named Tugalia 

 elegans, Gould. It is stated to come from Victoria. I have 

 not been able to trace the reference. 



Macroschisma tasmanica. Mihi. Var. rosea radiata. I 

 have met with a variety of the above shell ornamented with 

 numerous rose colored rays. Sowerby has described a shell 

 under the name of M. tasmanica, which I believe to be no more 

 than a variety. If, however, my name must give way I 

 propose to change it to M. weldii. Circular Head, W. F. 

 Petterd. 



No. 75. NucuLA MINUTA. N.t. minuta, ovata, postice attenuata, antice 

 tubtrtmcata, nitente, tenui, translucida, argentea, creberrimc costulis minutis- 

 simis regidaribus radiata et lineis incrcmenti sulcata ; marginibus rotundatis 

 subtUlissime crenulatis ; dentibus card. 12, natibus obliquiis acutis. Long, 

 li, lat. 2, mil. 



Shell minute, ovate, posteriorly attenuate, anteriorly sub- 

 truncate, shining, thin, translucent silvery, radiate closely with 

 minute regular riblets and sulcate with the lines of growth, 

 margins rounded, very finely crenulate, cardinal teeth 12, 

 umbones oblique, acute. Blackman's Bay. Common. W. F. 

 Petterd. 



No. 76. LiMOPSis CANCELLATA. n.s. L.t. parva, orbiculari, vix obliqua, 

 crassa, tumide convexa, radiatim costata ; costis numerosis (36 ?) rotundatis 

 subgranosis, parvioribus,intcrdum intercalantibxis ; tenuiter, regulariter, crebre 

 concentrice lirata ; natihus parvis, rotundatis, cancellatis ; pagina interna 

 nivea, polita ; fossula ligam. trigona, minuta; dentibus 22-24, marginibus 

 incrassatis, planatis, politis, interior, haud nitente, radiatim striata. Long. 

 12i, lat. 13. 



Shell small, orbicular, scarcely oblique, thick, tumidly, con- 



