260 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



Elenchus EXIGUUS. 



T. minuta, lozvis, ovato-conica acuta, flavida, rosacea vel fulvida, 



plus minusve lineis saturatioribus vel vittis articidatis ornata ; anf. 



5, ventricosis, apertura rotundato-ovata, columella planata, decolo- 



rata, dente acuto, defiecto, minuto. Axis 2, diam. 1*5. Hab. 



Port Jackson. 



Cantharidus lineolaris. 



T. elevato-conica, perforata, aureo-viridis lineis angulatis luteis 

 prope suturum dilatatis, ibi nigro maculatis, striis incrementi et 

 striis volventibus subtillissimis reticulata ; anfr. 7, planulatis, 

 idtimo angulato, apertura parva, subtriangularis. Axis 7, diam. 4. 

 Hab. Sydney, K S. W. 



Thracia cultrata. 



T. parva, alba, tenuissima, ovato-rliomboidea, ventricosa, intus 

 argentata antice semi-elliptica, late rotundata, umbonibus post 

 medianis, acutis, margins dorsali posteriore, declivi, eztremitate 

 truncata; angulo superiori acuto, declivitate umbonali acuta; mar- 

 gine ventralis vix arcuata ; apophysi cardinali triangulari (Valva 

 sinistra ignota^) Long. 8, alt. 6, lat. 4. Hab. Port Jackson, 

 sandy mud, 8 to 15 fathoms. 



Lepton concentricum. 



T. ovato-triangularis, subplana concentrice concmne lirata 

 (liris acutis) epidermide subrugosa marginem implicante induta : 

 umbonibus post medianis acutis ; cicatricibus subelongatis, linea 

 pallii emargine remota, dentibus minimis lateralibus utraque valva 

 remotis, fere obsoletis ; valva dextrce dente cardinali unico ; v. 

 sinistral dentibus duobus minimis margini contiguis. Long. 10, 

 lat. 4, alt. 7. Hab. Sydney Harbour. 



This beautiful species is easily known by its minute teeth, 

 concentric sculpture, and abundant epidermis. Its shape is 

 unusually unsymmetrical, and not unlikely it belongs to a genus 

 not yet established. 



Kellia Balaustina. 



T. minuta nitida rotundato-ovata, rubiginosa, subdiaphana, lineis 

 concentricis creberrime insculpta, umbonibus submedianis eminen- 



