EXPLANATION OF PLATES, VOL. XXV. 383 



FIGURE PAGE 



3. Vertigo ovata Say. Oswego, Oregon. 111397 82 



4. 7. Vertigo ovata Say. Hamilton, Ontario. 62900 82 



5. 6. Vertigo o. mariposa Pils. Mariposa Co., Cal. 11644. 88 



8, 9. Vertigo morsei St. Lake James, Ind. 105714 81 



10,13. Vertigo berryi Pils. San Bernardino Mts. 105166. 89 



11, 12. Vertigo o. diaboli Pils. Devil's River, Texas. 90437 88 



PLATE 7. 



1. Vertigo ventricosa Mse. Tignish, Prince Edwards I. 



106971 94 



2. Vertigo ventricosa Mse. Hebron, Maine. 87273 94 



3. Vertigo ventricosa Mse. Buckfield, Maine. 87294 ... 94 



4. 5. Vertigo gouldii Binn. Brookline, Mass. 82690 98 



6. Vertigo elatior St. Woodland, Aroostook Co., Maine. 



79782 95 



7. Vertigo perryi St. Duxbury, Mass. 14830 103 



8. Vertigo gouldii Binn. Brookline, Mass. 82690 98 



9, 10. Vertigo bollesiana Mse. Buckfield, Maine. 87312 . . 101 

 11, 12. Vertigo pygmam Drap. Upper Red Hook, N. Y. 



48554 96 



13-15. Vertigo nylaiideri St. Woodland, Maine. 98331.. 100 



PLATE 8. 

 [Figs. 1-7 x 19 ; figs. 4-8, 10-14 x 25.] 



1, 2. Vertigo rugosula St. De Soto Parish, La. 87438 . . 77 



3. Vertigo rugosula St. Sullivan's I., S. C. 60462 77 



4. Vertigo hebardi Van. Long Key, Fla. 106359 103 



5. Vertigo oralis St. Tallapoosa R., 7 miles above We- 



tumpka, Ala, 91060 78 



6. 7. Vertigo oralis St. Volusia Co., Fla. 11654 78 



8, 10, 11. Vertigo oscariana St. Volusia Co., Fla. 60463. 144 

 12. Vertigo a. conecuhensis Clapp. Evergreen, Ala. 



113414 80 



9, 13, 14. Vertigo alabamensis Clapp. Tuscaloosa Co., 



Ala. 113412 79 



PLATE 9. 



1, 2. Vertigo califomica Rowell. Paratypes. San Fran- 

 cisco. 59392 * 139 



3. Vertigo c. cyclops St. Rocklin, Cal. 79817 141 



4. Vertigo c. longa Pils. (elongata St.). S. Clemente I. 



57856 142, 377 



5. Vertigo c. catalinaria St. S. Barbara I. 113847 142 



