REFERENCE TO PLATES, VOL. XIV. 297 



FIGURE PAGE 



73-75. Cerion martensi Weinl. Novit. Conch., . . . 267 



76-78. Cerion eximium Mayn. Specimens, .... 265 



79, 80. Cerion fraternum Pils. Specimens, .... 265 



81-85. Cerion agrestinum Mayn. Specimens, . . . 266 



86, 87. Cerion marmoratum Pfr. After Pfeiffer, . . . 268 



88-90. Cerion marmoratum Pfr. Specimens, . . . 268 



PLATE 39. 



91, 92. Cerion ritchiei Mayn. Specimens, .... 250 



93-96, 98, 99. Cerion ritchiei grayi Mayn. Specimens, . 250 



97. Cerion ritchiei grayi.f. pumilum Mayn. Specimens, . 251 



1. Cerion ritchiei grayi (f. giganteum Mayn.). Specimen, . 251 



2. Cerion ritchiei vannostrandi P. & V. Specimen, . . 252 



3. Cerion eburneum Mayn. Specimen, .... 252 



4. 5. Cerion eburneum elongatum Mayn. Contrib. to Sci., . 253 



PLATE 40. 



5-7. Cerion glans varium Bonnet. Rev. et Mag. Zool., . 255 



8-11. Cerion glans varium Bonnet. Specimen, . . . 255 



12-14. Cerion glans varium (curtissii Mayn.). Specimen, . 256 



15. Cerion glans varium (nivea Mayn.). Specimen, . . 256 



16-19. Cerion glans Kiist. (thorndikei Mayn.). Specimen, . 257 



20. Cerion glans Kiist. (cinereum Mayn.). Specimen, . . 257 



PLATE 41. 



21-28. Cerion glans Kiist. (cinerea Mayn.). Specimens, . 257 



24-27. Cerion glans Kiist. (iracta Mayn.). Specimens, . . 257 



28-30. Cerion glans Kiist. (mutata Mayn.). Specimens, . 257 



31. Cerion glans Kiist. (albea Mayn.). Specimen,. . . 258 



32-36. Cerion glans coryi Mayn. Specimens, . . . 258 



PLATE 42. 



37. Cerion glans Kiist. (neglecta Mayn.). Specimen, . . 258 



38. Cerion glans Kiist. (agava Mayn.). Specimen, . . 259 

 39-44. Cerion glans Kiist. (agava Mayn.). Specimens, . 259 

 45-47. Cerion glans Kiist. (carlotta Mayn.). Specimens, . 259 

 48-50. Cerion glans Kiist. Typical specimens, . . . 260 

 51, 52. Cerion glans Kiist. After Kiister, .... 260 



PLATE 43. 



53-56. Cerion glans Kiist. Andros. Specimens, . . . 261 



57, 58. Cerion glans Kiist. (grisea Mayn.). Specimens, . . 261 



59. Cerion glans Kiist. (regulum Mayn.). Specimens, . . 261 



