HELIX. 19 



et angulcatim flexuoso, et clente supero margirds dextri 

 peristomatis crasso et valde immerso. 



HELIX MORDAX, ShUTTLEWOHTH. 



Testa late et perspective umbilicata, depressa, sublentieularis, 

 cai-iuata, tenuis, luteo-cornea, strigis rufis interniptis fasciatim 

 ornata, costis validis flexuosis remotis utrinque eximife asperata ; 

 anfr. 5i, plani ; apertura perobliqua, angulatim luuari-ovalis ; 

 perist. simplex, acutum. 



DiAM. maj. 18, min. 16 ; alt. 6 mill. 

 Hah. in mont. Carolinas Septent. ; specimina ultra 

 12 legit Rugel. Diam. maj. 7i, min. 6^ ; alt. 3 mill. 



Obs. H. alternatse vakle affinis, sed costis validiori- 

 bus, ad 1 mill, inter se remotis, distincta. H. Cumber- 

 landiana. Lea, (forsan mere forma moustruosa) quacmn 

 carma congruit, differt (ex icone) teste tautum temuter 

 striata nee costata. 



ZONITES PLACENTULA, Shuttleworth. 



Testa apert6 umbilicata, dcpressissima, arctispira, nitidissima, 

 striis distantibus irregularibus impressis notata, cornea, diaphana, 

 subtus concolor ; anfr. 7, lentissimfe acorescentes, vix convexius- 

 culi, ultlmus subtus convexus, ad umbilicum subexcavatus ; aper- 

 tura obliqua, luuaris ; peristoma simplex, acutum. 



Hah. in Temiessee, Amer. Sept., specunina pauca 

 legit Rugel. 



