EXPLANATION OF PLATES. 331 



43. Bulimulus lima Reib. (^chemnitzioides). Isis., . . 125 



44. Bulimulus ehemnitzioides Forbes. Pilsbry, del., . . 124 

 45,46. Bulimulus chemuitzioides Forbes. Conch. Cab.,. . 124 

 47, 48. Bulimulus chemnitzioides Forbes. P. Z. S., . . 124 



49. Bulimulus undescribed species. P. A. N. S., . . . 123 



PLATE 25. 



50. Bulimulus alternatus Say. Moll. Mex., .... 134 



51. 52. Bulimulus alternatus Say. Terr. Moll., Ill, . .134 

 53. Bulimulus alternatus Say. Terr. Moll., IV, ... 134 



Bulimulus artemisia W. G. B. P. U- S. N. Mus., . . 152 

 Bulimulus dealbatus mooreanus W. G. B. Terr. Moll., IV, 130 



56. Bulimulus beldingi Cooper. Specimen, .... 149 



57. Bulimulus pilula W. G. B. L. & F.-w. Sh. N. A., . . 138 



58. Drymseus parvus Lea. Type specimen, . . See Vol. XII 



59. 60. Drymseus trigonostomus Jonas. Apex and greatly en- 



larged detail of sculpture, 256 



61. Bulimulus corseformis Pils. Type, Pilsbry, del., . . 15 



62. Drymseus navicula AVagn. Apex, Pilsbry, del., . 186 



63. Bulimulus suffiatus v. ehinchensis Coop. Proc. Cal. A cad., 137 

 6-1-66. Bulimulus baroni Fulton. Ann. Mag. N. H., . . 172 



PLATE 26 (Bulimulus, Drym(xus*). 



67-69. Bulimulus punctulifer Sowb. C. Icon., . . .317 



70. Drymseus polygrammus Moricand. Pilsbry, del., . . 252 



71, 72. Drymseus flavidus Mke. Binnenmoll. Venez., . .310 



73. Drymaeus flayidus Mke. Fer., Hist., . . . 310 



74, 75. Drymseus debilis Beck. Fer., Hist., . . . .311 



76. Drymseus amandus Pfr. P. Z. S., . . . . 313 



77, 78. Drymaeus borellii Anc. Boll. M. Z. Torino, . 279 

 79, 80. Bulimulus mendozanus var. azulensis Doer. Exped. 



Rio Negro, ... . . 319 



81,82. Bulimulus heterogrammus Moric. Mem.Genev., . 321 

 83, 84. Drymaeus virginalis Pfr. Binnenmoll. Venez., . .309 



85. Bulimulus corseformis Pils., Apex, ..... 317 



86. Drymseus heynemanni, see vol. XII. 



87. Drymseus virginalis Pfr. Specimen, .... 309 



PLATE 27 (Zaplagius). 



16-19. Drymseus navicula Wagn. Specimens, . . . 186 

 20-23. Drymaaus involutus Mart. C. Mittheil., . .187 

 24-27. Drymseus uranops Pils. Specimen, .... 188 

 28, 29. Drymseus lateralis Mke. Specimens, .... 188 

 30. Drymseus lateralis Mke. Conch. Icon., . . . 188 



31-33. Drymseus lateralis var. Conch. Cab., . . . 189 



