Raymond : Gastropoda of the Chazy Formation. 225 



8. The same species. Side view, to show excavated columella. Natural size. 

 Isle La Motte, Vermont. 



9, 10. Oxydiscus catilloides Raymond. Back and side views of the type. Enlarged 

 six diameters. Valcour Island, New York. 



11. Holopea sp. ind. The side of a specimen, to show surface markings. Enlarged 

 six diameters. 



12. The same species. A larger specimen, viewed from above. The spire is 

 broken off. Enlarged six diameters. Valcour Island, New York. 



13. Buccania sulcatina (Emmons). A specimen from Isle La Motte, Vermont. 

 Twice natural size. 



14. The same species. A very young individual from Valcour Island, New York. 

 Six times natural size. 



15. Gyronetna leptonotum Raymond. A specimen from Chazy, New York. Six 

 times natural size. 



16. 17. Holopea harpa (Hudson). A somewhat distorted specimen, showing 

 color markings. Six times natural size. Valcour Island, New York. 



