EXPLANATION OF PLATES. 339 

 PLATE 22. 



58. Ischnochiton longicymba Q. & G. Ross del., . . 87 



59. Ischnochiton longicymba Q. & G. Astrol., . . .87 

 60-66. Ischnochiton longicymba Q. & G. Pilsbry del., . 87 



67, 72, 73. Ischnochiton haddoni Pils. Pilsbry del., . .88 



68, 70, 71. C. longicymba Sow. (=1. haddoni Pils.). Conch. 



111., . 88 



69, C. longicymba Rve. (=1. haddoni Pils.). Conch. Icon., . 88 



74. Ischnochiton divergens Rve. Pilsbry del., . . .90 



75, 76. Ischnochiton divergens Rve. Ross del., . . .90 



77. Ischnochiton divergens Rve. Conch. Icon., . . .90 



PLATE 23. 



78. 80. Ischnochiton fruticosus Gld. U. S. Ex. Exped., . 91 



79. Ischnochiton fruticosus Gld. Pilsbry del., . . .91 

 81, 82. Ischnochiton contractus Rve. Conch. Icon., . . 93 

 83, 84. Ischnochiton decussatus Rve. (= contractus). Conch. 



Icon., . . 93, 94 



85. Ischnochiton exiguus Sowb. Conch. Illustr., . . .98 



86. Ischnochiton exiguus Sowb. Conch. Icon., . . .98 



87. 88. Ischnochiton castus (=contractus). Conch. Icon., 93, 94 

 89, 90. Ischnochiton sculptus Sowb. Conch. Illustr. . . 92 

 91.. Ischnochiton pallidus Rve. Conch. Icon., . . .89 

 92, 93. Ischnochiton petaloides Gld. U. S. Exped., . . 118 

 94, 95. Ischnochiton carinulatus Rv. Conch. Icon., . . 96 

 96, 97. Ischnochiton pallidulus Rv. Conch. Icon., . . 95 



PLATE 24. 



98, 99. Ischnochiton crispus Rve. Conch. Icon., . . .89 



100, 1-4. Ischnochiton ustulatus Rve. Emerton del., . . 96 



5. Chiton granulosus Frembly. Zool. Journ., . Appendix. 



6. Liolophura curtisiana Smith. 'Alert' Zool., . . . 242 



7. 8. Ischnochiton adeiaidensis Rve. Conch. Icon., . .136 

 9, 10. Ischnochiton muscarius Rve. Conch. Icon., . .132 



11, 12. Ischnochiton ustulatus Rve. Conch. Icon., . . 96 



J-15. Ischnochiton tessellatus Q. & G. Astrol., . . 138 



16, 17. Ischnochiton arbutum Rve. Conch. Icon., . . 139 



18, 19. Ischnochiton milleri Gray. Conch. Icon., . . . 137 

 20-22. Ischnochiton cariosus Cpr. var. subcariosus Pils. 



Pilsbry del, 65, 67 



23. Ischnochiton cariosus Cpr. typical. Emerton del., . . 65 



PLATE 25. 



1-10. Ischnochiton dalli Haddon. Chall. Rep 133 



11-19. Ischnochiton dorsuosus Haddon.^Chall. Rep., . .135 



