584 



rotundataj longitudinaliter striata, sub iente lineis transversis 

 minutissimis ; labro sequaliter arcuato. 



Shell roundly ovatCj tliiii, horny, semipellucid, rounded at both 

 ends, longitudinally striated under the lens, with very fine trans- 

 verse lines ; outer lip equally arched. 



Hah. ? Mus. Cuming. 



78. Bulla succinea (pi. cxxiv. f. 106), Conrad, Proc. 

 Acad. Nat. Sc. PliU. 1846. Feb. pi. i. f. 5. 



B. testa cyhndrica, pertenui, diaphanS,, succiueft, lineis confertis 

 transversis cincta ; columella concava, ad basin canaliculata ; labro 

 recto, postice producto. 



Shell cylindrical, very thin, diaphanous, of an amber colour, 

 marked with crowded minute revolving wrinkled lines ; columella 

 concave or channelled towards the base; outer lip straight, the 

 hind margin above the line of the apex. 



Tampa Bay. Mus. Metcalfe. 



7S a. Bulla castanea (pi. cxxiv. f. 106 a), Adams. 



B. testa soUda, oblongo-ovaH ; spira umbilicata, albida, epider- 

 mide fusco-ferruginea tecta, hneohs creberrimis transversis sub 

 Iente insculpta, Lineis anticis conspicuis, distantioribus, longitudi- 

 naliter substriata ; labio antice albo, incrassato ; apertura intiis 

 albida. 



Shell solid, oblong, oval ; spire umbUicated, whitish, covered 

 with a brown ferruginous epidermis, engraved (under the lens) with 

 very fine close-set lines, the anterior ones very distinct and wide 

 apart, longitudinally substriated ; inner lip anteriorly white and 

 thickened ; aperture white witliin. 



Shores of New Zealand ; 4 fathoms, mud. 



SuB-GENUS AtYS. 



79. Bulla naucum (pi. cxxiv. f. 107-109), Linn., Gmel. 

 p. 3424. 



B. testa rotundata, peUucida, utrinque subumbilicat^, undique 

 transversim striata, alba. 



Shell rounded, pellucid, somewhat umbilicated at both ends, 

 transversely striated throughout, white, 



Phihppines, Borneo ; on muddy sand-banks. Cuming. 



