456 REFERENCE TO PLATES. 



FIGURE. PAGE. 



100. Bittium lacertinum, Gould. Conch. Icon., f. 129, . . 155 



1. Bittium enode, Watson. Voy. Challenger, xv, t. 39, f. 3, 152 



2. Bittium luscinse, Watson. (== pigrum). Ibid, xv, t. 41, 



f. 1, 153 



3. Bittium philomelse, Watson. (= pigrum). Ibid, xv, t. 



41, f. 2, 153 



4. Bittium pigrum, Watson. Ibid, xv, t. 40, f. 7, . . 153 



5. Bittium Lawleyanum, Crosse. Jour, de Conch., 1. 1. f. 4, 



1863, . ... . 154 



6. Bittium delicatum, Watson. Voy. Challenger, xv, t. 41, 



f. 5, . . . . 154 



7. Bittium rugatum, Carp. (= asperum). Conch. Icon., f. 



140, . . . . 153 



8. Bittium attenuatum, Carp. Specimen. . . . .153- 



9. Bittium tricarinatum, Pease. Conch. Icon., f. 127, . 154 



10. Bittium alutaceum, Gould. Ibid., f. 142, . . 154 



11. Bittium sedonicum, Watson. (= pigrum). Voy. Chal- 



lenger, xv, t. 41, f. 6, . 153 



12. Bittium Oosimense, Watson. Ibid., t. 39, f. 1, . . . 156 



13. Bittium turritelliformis, Angas. Zool. Proc., t. 26, f. 14, 



1877, . . .154 



14. Bittium diplax, Watson. Voy. Challenger, xv, t. 38, f. 4, 156 



15. Bittium Amboynense, Watson. Ibid, xv, t. 40, f. 5, . 156 



16. Bittium esuriens, Carp. Specimen. . . . .153 



17. Bittium pusillum, Dunker. (== perpusillum). Moll. Japan, 



t. 2, f. 6, 154 



18. Bittium cylindricum, Watson. Voy. Challenger, xv, t. 



39, f. 5, . . . 156 



19. Bittium glariosum, Gould. Conch. Icon., f. 131, . . 155 



20. Bittium parcum, Gould. Ibid., f. 125, .... 155 



21. Bittium Peruvianum, Orb. Voy. Amer., t. 77, f. 9, .153 



22. Bittium pupiforme, Watson. Voy. Challenger, xv, t. 41, 



f. 3, 156 



23. Bittium plumbeum, Sowb. Thes. Conch., f. 293, . . 155 



24. Bittium xanthum, Watson. Voy. Challenger, xv, t. 38, f, 6, 157 



PLATE 31. 



25. Bittium pusillum, Gould. Moll. Wilkes' Exped., f. 172, . 155 



26. Bittium altum, Sowb. Conch. Icon., f. 126, . . . 156 



27. Bittium furvum, Watson. Voy. Challenger, xv, t. 38, f. 5, 157 



28. Bittium porcellanum, Watson. Ibid, xv, t. 38, f. 8, . 157 



29. Bittium perparvulum, Watson. Ibid, xv, t. 38, f. 3, . 157 



30. Bittium leucocephalum, Watson. Ibid, xv, t. 38, f. 7, . 157 



31. Potamides ebeninus, Brug. Conch. Icon. Potamides, f. 2b, 158 



32. Potamides Pacificus, Sowb. Ibid., f. la, . . . . 158 



33. Potamides Lamarckii, Val. Kiener, Iconog., t. 27, f. 3, . 159 



34. Potamides fuscatus, Linn. Conch. Icon. Tyrnp., f. 3, . 159 



35. Potamides radula, Linn. Ibid., f. 4, . . . . 159 



