386 EXPLANATION OF PLATES, VOL. XXV. 



FIGURE PAGE 



8. Vertigo denudata Mss. After Mousson 156 



10, 11. Ptychalaea d. tamagonari P. & H. Type. 85745. 158 



12. Staurodon s. seminulum Lowe. 97298 225 



13, 14. Staurodon saxicola Lowe. 4930 224 



15. Ptychalaea flexidens Rss. After Wenz 157 



PLATE 16. 



1. Vertigo pusilla Mull. Lausanne. 22898 161 



2, 3. Vertigo pusilla Mull. Niedermodau. 123426 161 



4, 5. Vertigo antivertigo Drap. Lyons. 3797 163 



6. Vertigo antivertigo Drap. Calvados. 22890 163 



7. Vertigo sinuata Mouss. After Mousson 166 



8. 9. Vertigo diseheilia Bgt, After Bourguignat 170 



10. 11. Vertigo inaresi Bgt. After Bourguignat 171 



12. Vertigo eodia Bgt. After Bourguignat 184 



13. Vertigo microlena Bgt. After Bourguignat 185 



14. Vertigo aprica Bgt. After Bourguignat 184 



15. Vertigo loroisia.ua Bgt. After Bourguignat 182 



PLATE 17. 



1. Vertigo moulinsiana Dup. Lyons. 22882 178 



2, 3. Vertigo moulinsiana Dup. Cambridge. 109428 . . . 178 



4. Vertigo substriata mitis Bttg. After Boettger 173 



5, 6. Vertigo m. ventrosa Heyn. After Heynemann .... 181 



7. ''Vertigo" subtrochiformis Greg. After de Gregorio. . 214 



8. "Vertigo" cylindrica Colb. After Colbeau 214 



9. Vertigo liaeussleri St. After Sterki 178 



10. Vertigo substriata Jeffr. 109425 172 



11. 12. Vertigo sieversi Bttg. After Boettger 195 



13. Vertigo s. punctuluni Bttg. After Boettger 196 



14. Vertigo ronnebyensis West, After Geyer 192 



15. 16, 17. Vertigo pygmaea Drap. Lyons'. 3799 174 



PLATE 18. 



1. Vertigo alpestris Aid. Halker, England. 109427 197 



2. Vertigo alpestris Aid. Lowenburg, Transylvania. 



114999 197 



3. Vertigo a. shuttleworthiana Ch. After Steeuberg. . . . 199 



4. Vertigo held ii Cl. (? pygmsea). After Geyer 199 



5. 6. Vertigo leontina Gredl. After Gredler 201 



7,8. Vertigo isarica West, (leontina Clessin). After 



Clessin 201 



9. Vertigo schultzii Phil. After Kiister 202 



