REFERENCE TO PLATES. 181 



FIGURE. PAGE. 



71,72. Acmsea jacksoniensis Rv. Conch. Icon., . . .58 

 73-75. Acmsea jacksoniensis Rv. Original, . . .58 



76-78, Acmsea alba T.-W. Original, 54 



79, 80. Acmsea rubella Fab. Moll. Arct. Norv., ... 9 



81. Acmsea pelta, dentition. A. J. C., . . ... 8 



82. Acmsea mitra, dentition. A. J. C., . . . .8 



83. Acmsea saccharina, dentition. A. J. C., . . .8 

 84-86. Acmsea (triangularis var. ?) orcuttii. Original, . 21 



87, 87. Acmsea cumingii Reeve (^patina v. pintadina). C. 



Icon., 12 



88, 89, Acmsea biradiata Rv. Conch. Icon., . . .49 

 90,91. Acmsea alveus Conr. Original, . . . .11 

 92-95. Acmiea antillarum Sowb. var. Original, . . 39, 166 



PLATE 43. 



1,2. NacellamagellanicaGm. (meridionalis R. &M.). Moll. 



Cap. H., . . . . . . , ' . .119 



3, 4. Nacella magellanica (pupillata R. & M.). Moll. Cap. 



H, 119 



5, 6. Nacella magellanica (tincta R, & M.). Moll. Cap. H., 119 

 7,8. Nacella kerguelensis Smith. Phil. Trans., . .121 



PLATE 44. 



9-12,15,16. NacellamagellanicaGm. Original. . . 119 

 13,14. Nacella magellanica Gm. (atramentosa Rv.). Conch. 



Icon., 119 



17. Nacella magellanica (metallica R. & M.). Cap. H., . 119 



18,19. Helcioniscus fungus Rv. Conch. Icon., . . . 153 



20. Nacella deaurata Gm. (cymbularia Delessert). Rec., . 118 



PLATE 45. 



20, 21, Nacella magellanica v. chiloensis Rv. Conch. Icon., 120 

 22,23. Nacella senea Martyn, typical. Original, . . .117 

 24,25. Nacella magellanica v. venosa Rv. Original, . .120 

 26, 27. Nacella magellanica v. venosa Rv. Conch. Icon., . 120 



PLATE 46. 



28-30. Nacella deaurata Gm. Original, . . . .118 

 31,32. Nacella deaurata Gm. Original, .... 118 

 33. Nacella deaurata (varicosa Rv.). Conch. Icon., . .118 

 34-36. Nacella deaurata Gm. Original, . . . .118 



PLATE 47. 



1-3. Helcioniscus exaratus Nutt. (lutrata Nutt.). Original, 127 



4, 5. Patella stellseformis var. (cretacea Rv.). Conch. Icon., 99 



