157 



interstices, spathula, black, with a white conspicuous margin. 

 Common. The intensely black marbled appearance of the 

 interior of this shell will distinguish it at once. It is found, 1 

 am told, in New South Wales, but rarely. 



Patella tasmanica. n.s. P. t. ovata, solida, sordide hUeo-alba, 

 scfpe corrosa ; apke siihmrdiano ; C0i<tls radiantlbus, 21 circifer, va/ldis, 

 aDijidat'is ; biferstitiw liri.i subtiUifm.^ suhimhricatia profuse radiata ; bitus 

 eburnca, nitente plus vilnusve luteo thicta, margbie angusta, elegantissime 

 pectinata, intiis cicrideo tenumime llneato,exti(s Uneafusca interrupta mar- 

 ginato ; spathala vix definita. Long. 49. Lat. 38. Alt 20. 



P. shell ovate, solid, sordidly yellowish white, often corroded, 

 apex sub-median with about 21 valid, angular radiating ribs, 

 and the interstices rayed profusely with very fine subimbri- 

 cated lirse ; within ivory white and shiny, more or less tinged 

 with yellow ; margin narrow elegantly pectinated ; mar- 

 gined with a very fine blue line within, and an interrupted 

 dusky brown line outside. Spathula scarcely defined. 



Recherche Bay and south generally. Nearer to P. alii- 

 costata Angus than any other. 



Patella chapmani. n.s. P. t. ovata, postice latmsctda, depressa, 

 rufa vel uslidata, el nebuloso brunea ; apice acuto, submediano ; costis 

 radiantlbus S., j^^ks mbiusve validis, depresso rotundatis ; liris subtiUibus 

 jyrofuse radiata, et sidcis u'regtdaribus cbicta ; margine angulato, noduloso; 

 intw9 alba et pallide rosea nebulosa ; spathula vix visibilis. Long. 20. 

 Lat. 15. Alt. 5. 



P. shell ovate, somewhat broad behind, reddish or scorched 

 and nebulously brown, apex acute, submedian, with 8 radiating 

 ribs more or less valid, and depressedly rounded, profusely 

 radiate with very fine lirae, and girdled with irregular sulci ; 

 margin angulate, nodulose ; white within and clouded pale 

 rose color, spathula scarcely visible. 



Very rare. Pour of the ribs are posterior, and the four 

 anterior are smaller. I have dedicated this shell to Commo- 

 dore Chapman, of H. M.S. Dido, an industrious conchologist, 

 and from whom I received valuable assistance in preparing my 

 list of Tasmanian Mollusca. 



Macroschisma tasmanica. n.s. M. t. ovato-oblonga, dorso elevata, con- 

 vexa, pallida luteo-castanea, radiat'mi atrata, lineis elevatis, nodulosis, 

 radiata ; sulcis concentricis irrigvlaribus, rugosa, lineis concentricis 

 confeHissimis sculpta ; extremitatibus rotundatis ; postice elevata. Foramen 

 magnum, elongatum, subtrianyulare, postice dilatatum, excavatum. Long. 

 32. Lat. 18. Alt. 9. 



M. shell ovately oblong, dorsal region raised and convex, 

 pale yellowish chestnut, with blackish rays ; radiate with no- 

 dulous elevated lines ; rough, with irregular concentric sulci, 

 sculptured with very close concentric lines, ends rounded ; 

 posterior end raised ; foramen large, elongate, sub-triangular, 

 dilate and excavate behind. 



The common Macroschisma, of Tasmanian coasts. Until 



