hElAClUM. 59 



Sub.Genu8 OMPHALINA, Raf. enieiul. Binnej (type Z. 

 fuliginosa). 



5. Zonites (Omphalina) newberryanus, Binney. 



( = Acyojjis sp., fide Binney.) 

 6 California ; ex c. Prof. W. Newcomb and Pi-of. Stearns. 



6. Zonites (Omphalina) fuliginosus, Griffith. 



6 Ohio ; ex c. Prof. W. Newcomb. 



7. Zonites (Omphalina) friabilis, Binney. 



1 Texas ; ex c. Prof. VV. Newcomb. 



Sub-Genus STROBILA, Morse (type S- labyrinthica). 



[ = GASTBODONTA, fide Cams and Gerstaecker.] 



8. Zonites (Strobila) labyrinthica, Say. 



40 New York and Ohio ; ex c. Prof. W. Newcomb and Revd. E. R, Beadle. 



Sub-Genus VENTRIDENS, BinneyXtype H. suppressa.) 

 [ = GASTBODONTA, fide Cams and Gerstaecker.] 



9. Zonites (Ventridens) gularis, Say. 



2 Ohio ; coll. Prof. W. Newcomb. 



10. Zonites (Ventridens) suppressus, Say. 



4 Staten I. 



3 Ohio; ex c. Prof. W. Newcomb. 



This resembles the Indian N. diplodon ; probably the two 

 forms are congeneric ? 



Sub-Genus MESOMPHIX, Raf. 



The type of Mesompliix in Albers is Z. olivetorum ! emend. 

 Binney (type Z. ligera). 



11. Zonites (Mesomphix) olivetorum, Herrm. 



3 Pyrenees ; ex c. A. Morelet, Esq., and As. Soc. Bengal. 



12. Zonites (Mesomphix) fuscosus, Zgi. 



1 Sicily (?) ; ex c. G. Nevill, Esq. 



