HELIC1D.E. 59 



Sub-Genus OMPHALINA, Kaf. emend. Binney (type Z. 

 fuliginosd). 



5. Zonites (Omphalina) newberryanus, Binney. 



( = Aegopis sp., fide Binney.) 



5 California ; ex c. Prof. W. Newcomb and Prof. Stearns. 



6. Zonites (Omphalina) fuliginosus, Griffith. 



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



7. Zonites (Omphalina) friabilis, Binney. 



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



Sub-Genus STROSILA, Morse (type S. labyrinthica}. 



[ = GASTRODONTA, fide Cams and Gerstaecker.] 



8. Zonites (Strobila) labyrinthica, Say. 



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



Sub-Genus VENTRIDENS, Binney' (type H. suppressa.) 

 [ = GASTRODONTA, fide Cams and Gerstaecker.] 



9. Zonites (Ventridens) gularis, Say. 



2 Ohio ; coll. Prof. W. Newcomb. 



10. Zonites (Ventridens) snppressus, 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 tjpe of Mesomphix in Albers is Z. oUveteru/m ! 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. 



