70 Trans. Acad. Sci. of St. Louis. 



6. MuscuLiuM TEUNCATUM Lindsej. 



Pond, Flat Creek, Pettis Co. 



7. MuscuLiuM sECURis Prime. 



Flat Creek, Pettis Co. (or near). 



8. MuscuLiuM ELEVATUM Hald. 



Coon Creek, Jasper Co.; Jackson, Cape Girar- 

 deau Co.; Pond, Flat Creek, Pettis Co. 



pisiDiuM Pfeifer. 



9. PisiDiuM coMPEESSUM Prime. 



Flat Creek, Pettis Co. 



10. PiSIDIUM FEANDULENTUM Sterki. 



Flat Creek, Pettis Co. 



11. PiSIDIUM NovEBOEENsis Prime. 



Flat Creek, Pettis Co. (near). 



12. PiSIDIUM NEGLECTUM Sterki. 



Branch of Muddy Creek, Pettis Co. 



GASTROPODA. 



Anisopleura. 



PROSOBRANCHIATA. 



Rhipidoglossa. 



Helicinid^. 

 HELiciNA Lam. 



13. Helicina oebiculata Say. 



Stone Co. (Pilsbry) ; Marble Cave, Stone Co. 

 (Stearnes). 



Sliimek says this is not found north of the south line 

 of Kentucky, either recent or fossil. 



