120 



i :r. IT: HENCE TO PLATES. 



FIGURE. 



I'AGK. 



48, 49, 51. Acanthochites rhodeus Pils. Pilsbry del., . . 26 



50. Acanthochites rhodeus Pils. Ross del., . . . .26 



52. Acauthochitesdiegoensis Pils. Ross del., . . .25 



53, 54. Acanthochites diegoensis Pils. Pilsbry del., . . 25 



PLATE 13. 



55, 56. Acanthochites astriger Rve. Pilsbry del., . . 22 



57. Acanthochites astriger Rve. Conch. Icon., . . 22 



58, 59. Acanthochites pygmseus Pi Is. Pilsbry del., . 23 

 60, 61. Acanthochites spiculosus Rve. Conch. Icon., . 22 

 62. Acanthochites spiculosus Rv. Emerton del., . 22 

 63, 64. Callochiton inornatus Ten.-Woods. Tr. Roy. Soc. Viet. 68 



65. Acanthochites hemphilli Pils. Pilsbry del., . . 34 



66. Acanthochites hemphilli Pils. Ross del., . . 34 



67. Acanthochites hemphilli. Posterior view of tail valve 



Pilsbry del., 34 



PLATE 14. 



1, 2. Chaetopleura asperrima Couth. U. S. Expl. Exped., . 70 



3, 4. Tonicia floccata Sowb. Conch. Icon., . . . .90 



5. " Chiton " castaneus Couth. U. S. Expl. Exped., . 



6, 7. Plaxiphora? hyadesi Roch. Moll. Cap Horn, . . 112 

 8. Ischnochiton cariosus Cpr. Ross del., . . .82 

 9,10. Acanthochites zelandicus Q. & G. Voy. Astrol., . 16 



11-16. Acanthochites garnoti BIv. Voy. Astrol., . . 14 



17. Ischnochiton haddoni. Girdle-scale, . Vol. xiv, 88 



18. Ischnochiton longicymba var. Girdle-scales. Vol. xiv, 87 



19. Ischnochiton longicymhu var. Ross del., " " 87 



20. 21. Lepidopleurus algesirensis Cap. Journ. de Conch., . 62 



PLATE 15. 



22-24. Tonicella saccharina Dall. Pilsbry del., . . .66 



25. Trachydermon ruber, girdle-scales. Pilsbry del., . . 65 



26. Trachydermon deiitiens. Girdle-scales. Pilsbry del., . 65 



27. Ischnochiton smarainlinus Ang. P. Z. S., . Vol. xiv, 1.37 



28. 29. Ischnochiton gothicus Cpr. Pilsbry del., . . 65 

 30-33. Callochiton aleuticus Dall. Pilsbry del., . . 65 

 ',4, :J6. Trachydermon flectens Cpr. PilsbVy del., . . 64 



TrarhydiTinnii flectens Cpr. Ross del., . . .64 



37. Trachydermon flectens. Girdle-scales. Pilsbry del., . 64 



38-41. Chaetopleura asperior Cpr. Pilsbry del., . . .74 



PLATE 16. 



42-46. [aohnochiton serratua Cpr. Pilsbry del.. . . .78 



47, 50, 51, .vj. [achDOchiton reteporoaua Cpr. Pilsbry del., . 77 



