REFERENCE TO PLATES. 297 



FIGURE. PAGE. 



21-23. Helicella bidens, Chemn. Kiister, Conch. Cab. ii, t. 



99, f. 4-6. ... 170 



24. Helicella bicallosa, Friv. Conch. Icon. f. 1217, . . 171 



25. Helicella Cobresiana, Alten. Rossmassler, Icon, ii, f. 432, 171 



26. Helicella Cobresiana, Alten. Mai. Blatt, xxv, t. 3, f. 13, 171 

 27-29. Helicella diodon, Parr, (bidens, Var.). Rossmassler, 



Icon, ii, f. 431, 171 



30. Helicella alpestris, Clessin. ( Cobresiana, Var.). Mai. . 



Blatt. xxv, t. 3, f. 12, ..... . 171 



31-33. Helicella edentula, Drap. Kiister, Conch. Cab. ii, t. 



99, f. 13-15, ... .... 171 



34, 35, Helicella, leucozona, Ziegler. Rossmassler, Icon, ii, 



f. 434, 436, ...... .171 



34. (lower fig.), Helicella, concinna, Jeffreys. Forbes & Han- 

 ley, Brit. Moll. 1. 118, f. 3, . . . . . .173 



36-38. Helicella Bouryi, de Morgan. Bull. Soc. Zool. Fr. 



t. 6, f. 3, 1885, ... . . 172 



39, 40. Helicella hispida, Linn. Rossmassler, Iconog. ii, f. 



426, . 172 



41, 42. Helicella hispida, Linn. Forbes & Hanley, Brit. 



Moll. t. 118, f. 1,2, ... . .172 



44. Helicella anodonta, Tschapak. Jahrb. Mai. Gesell. vii, 



t. 6, f. 4, . ... 171 



45-47. Helicella Villersi, Malzine. Moll. Belg. t. 3, f. 1-3, 173 

 48-50. Helicella Bourniana, Bourg. Moll. Grande Chartr. 



t. 7, f. 15-17, 



51-53. Helicella porochaetica, Bourg. Ibid. t. 6, f. 10-12, . 177 



PLATE 39. 



54-56. Helicella depilata, Pfeiffer. Kiister, Conch. Cab. ii, 



t. 98, f. 22-24, .174 



57. Helicella globus, Lessona. .Atti. Acad. Torino, xv. 296, 



t. 7, f. 25, - . 174 



58-60. Helicella muscicola, Bourg. Amenites Malacol. i, t. 



9, f. 10-12, 174 



61-63. Helicella ovularis, Bourg. Ibid, i, t. 9, f. 7-9, . . 174 

 64, 65. Helicella plebeia, Drap. Moquin Tandon, Moll. Fr. 



t. 17, f. 18, 19, 174 



66-68. Helicella rufescens, Pennant. Rossmassler, Iconog. ii, 



f. 422, 175 



69. Helicella montana, Studer. Jahrb. Mai. Gesell. i, t. 8, 



f. 2, . . . .175 



70. Helicella rufescens, Pennant. Forbes & Hanley, Brit. 



Moll. t. 118, f. 7, . . . . , . . . 175 



71. Helicella clandestina (=Gratianopolitana). Jahrb. Mai. 



Gesell. i, t. 8, f. 3, . .'. . . . .175 



72. Helicella Segusina, Lessona. Atti Acad. Torino, xv, t. 7, 



f. 31, 179 



