HELIX. 1 9 



et angulatiin flexuoso, et dente supero marginis clextri 

 peristomatis crasso et valcle immerso. 



HELIX MORDAX, SHUTTLEWORTH. 



i 



Testa late et perspective umbilicata, depressa, sublenticularis, 



carinata, tennis, luteo-cornea, strigis rufis interruptis fasciatiin 

 orriata, costis validis flexuosis remotis utrinque exiinie asperata ; 

 anfr. 5j, plani ; apertura perobliqua, angulatim lunari-ovalis ; 

 perist. simplex, acutum. 



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

 Hob. in mont. Carolinae Septent. ; specimina ultra 

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



Obs. H. alternates valde affinis, seel costis validiori- 

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

 landiana, Lea, (forsan mere forma monstruosa) quacum 

 carina congruit, difFert (ex icone) teste tantum tenuiter 

 striata nee costata. 



ZONITES PLACENTULA, SHUTTLEWORTH. 



Testa aperte umbilicata, clepressissima, arctispira, nitidissima, 

 striis distantibus irregularibus impressis notata, cornea, diaphana, 

 subtus concolor ; anfr. 7, lentissime accrescentes, vix convexius- 

 culi, ultimus subtus convexus, ad umbilicuin subexcavatus ; aper- 

 tura obliqua, lunaris ; peristoma simplex, acutum. 



nab. in Tennessee, Amer. Sept., specimina pauca 

 legit Rugel. 



