332 EXPLANATION OF PLATES. 



FIGURE PAGE 



6. Columella alticola (Ing.). Mammoth. Hot Springs, 



Wyoming. 63610 243 



7. Columella alticola (Ing.). Howardsville, Col. 59083. 243 



8. Columella alticola (Ing.). Banff. 92135 243 



9. Columella polvonensis (Pils.). Type. 5096 246 



10, 11. Pupoides zanguebarica (Taylor). B. Walker coll. 251 



12. Pupoides bryantwalkeri Pils. Type. B. Walker coll. 251 



13. Pupoides pilsbryi Dall. Cotype. Ballast Point Silex 



beds. 165017 U. S. N. M 248 



14. Granopupa brondeli (Bgt.). Point Pescade. 134591. 215 



15. Pupoides hedleyi Pils. Type. Bundaberg, Queens- 



land 252 



16. Granopupa rhodia taurica Kessl. Neschori. 134590. 215 



Plate 32 



1-3. Spermodea lamellata (Jeffr.). Ingleby, England. 



22653 187 



4. Acanthinula aculeata (Mull.). Sicily. 22650 191 



5. Acanthinula aculeata (Mull.). France. 22651 191 



6. Acanthinula aculeata (Mull.). Waechtersbach. 



123320 191 



7. 8. Acanthinula azorica Pils. S. Miguel. 1515 193 



9. Acanthinula expatriata Prest. After Preston 194 



10. Zoogenetes larpa Say. Buckfield, Maine. 87289 ... 196 

 11-13. Anthracopupa ohioensis Whitf. After Whitfield . 316 

 14, 15. Ptychospira deloplecta Slavik. After Slavik . . . 264 



16. Strophites grandaeva Dawson. After Dawson 319 



17, 18. Maturipupa vermilionensis (Bradley). After 



Bradley 317 



19, 20. Acanthopupa joossi Wenz. After Wenz 198 



21-24. Dendropupa vetusta Dawson. After Dawson .... 317 



