342 EXPLANATION OF PLATES. 



82. Chiton squamosus L. Ross del., . . . . . 155 



83, 84. Chiton insularis Rochebr. Nouv. Arch., . . . 183 

 85, 86. Chiton hamyi Rochebr. Nouv. Arch., . . .183 

 87, 88, 90. Chiton olivaceus Speng. Pilsbry del., . . 180 

 89, 91, 92. Chiton olivaceus Speng. Ross del., . . . 180 

 93. Chiton affinis Issel. Savigny, 181 



PLATE 36. 



91. Chiton jugosus Gould. U. S. Exped., . . . .178 



92. 94, 95. Chiton jugosus Gould. Pilsbry del., . . .178 



93. Chiton jugosus Gould. Ross del., 178 



96, 97. Chiton sereus Rve. Conch. Icon., . . . .179 

 98, 99. Chiton marquesanus Pils. Pilsbry del., . . .170 



100. Chiton marquesanus Pils. Ross del., . . . .170 



1. Chiton sinclairi Gray. Erebus & Terror, . . . 174 



2, 3. Chiton sinclairi Gray. Pilsbry del., .... 174 



4. 6. Chiton canaliculatus Q. Pilsbry del., . .177 



5. Chiton insculptus Ad. (canaliculatus Q.). P. Z. S., . 177 



PLATE 37. 



6. Chiton quoyi Desh. (color var.). Ross del., . . .172 



7. Chiton quoyi Desh. (sculpture) Pilsbry del., . . . 172 



8. Chiton quoyi Desh. Conch. Icon., . * . . . . 172 



9. 10. Chiton caliginosus Rve. Conch. Icon., . Appendix. 



11. Chiton dissimilis Rve. Conch. Icon., . . . . 184 



12, 13. Chiton muricatus Ad. P. Z. S., .... 175 

 14, 15. Chiton pellisserpentis Q. Ross del., . . .173 



16. Chiton pellisserpentis Q. Astrol., .... 173 



17. Chiton pellisserpentis Q. (1 sq. mill, of the girdle indicated). 



Pilsbry del 173 



18. Chiton pellisserpentis Q. Emertou del., . . . .173 



PLATE 38. 



19. Chiton subfuscus Sowb. typical. Conch. Icon., . 162, 163 



20. Chiton subfuscus var. mesoglyptus Pils. Conch. 111., . 164 



22. Chiton subfuscus var. mesoglyptus Pils. Ross del., . 164 



21. Chiton subfuscus var. mesoglyptus, valve of same specimen 



as fig. 22. Pilsbry del., 164 



23. Chiton bowenii King. Conch. Illustr., .... 164 

 24-26. Ischnochiton sulcatus Q. & G. Voy. Astrol., . . 138 

 27, 28. Chiton tenuistriatus Sowb. Conch. 111., . . . 188 

 29, 30. Chiton cingillatus Rve. Conch. Icon., . Appendix. 

 31, 32. Chiton luzonicus Rve. Conch. Icon., . Appendix. 

 33, 34. Chiton aquatilis Rve. Conch. Icon., . .169 



PLATE 39. 

 35. Tonicia disjuncta Fremb. Conch. Icon., . . . 212 



