EXPLANATION OF PLATES. 341 



PLATE 31. 



32-34. Chiton rusticus Desh. Moll. Reun., .... 186 

 35, 36. Chiton lyratus Sowb. Conch. Icon., . . . .184 

 37, 38. Chiton angusticostatus Q. Voy. Astrol., . . .187 

 39, 40. Chiton mauritianus Voy. Voy. Astrol., . . .188 

 41, 42. Chiton capensis Gray ( nigrovirens Blv.). Conch. 



Icon., .187 



43. Chiton cymbiola Sowb. (tulipa Q.). Conch. Icon., . 185 



44, 45, 47. Chiton tulipa Quoy. Ross del., .... 185 

 46. Chiton tulipa Quoy. Voy. Astrol., ..... 185 

 48, 49. Chiton cymbiola Sowb. (^tulipa Q.) ... 185 



PLATE 32. 



50. Chiton patulus Brod. (=stokesii Brod.). Conch. Icon., 165 

 51-52. Chiton stokesii Brod. Pilsbry del., . . . .165 



53. Chiton stokesii Brod. (1 sq. mm. of girdle indicated), 



Pilsbry del., 165 



54. Chiton virgulatus Sowb. Conch. Icon., . . . .166 



55. 56. Chiton virgulatus Sowb. Pilsbry del., . . . 166 



57. Chiton albolineatus Sowb. Conch. Illustr., . . . 160 



PLATE 33. 



t 



58, 59, 60. Chiton tuberculatus L. Ross del., . . .153 



61. Chiton tuberculatus var. assimilis Rv. Conch. Icon., . 155 



62. Chiton tuberculatus var. assimilis Rv. Ross del., . . 155 



63. Chiton tuberculatus var. assimilis form ater. Ross del., 155 



64. Chiton foveolatus Sowb.) (viridis Spengl.). Conch. 



Icon., 156 



65. Chiton viridis Spengl. Ross del., 156 



66 67. Chiton viridis Spengl. Pilsbry del., . . . .156 



PLATE 34. * 



68. Chiton Isevigatus var. articulatus Sowb., ventral view. 



Emerton del., 159 



69. Chiton Isevigatus var. articulatus Sowb. Conch. Icon., . 159 



70. Chiton Isevigatus var. articulatus Sowb. interior. Pilsbry 



del., 159 



71. Chiton Isevigatus Sowb., typical. Conch. Icon., . .159 



72. 74. Chiton marmoratus Gmel. Ross del., . . . 158 



73. Chiton marmoratus Gmel. Conch. Illustr., . . . 158 



75. Chiton marmoratus Gmel., interior. Pilsbry del., . .158 



76. Chiton marmoratus Gmel. Conch. Icon., . . . 158 

 77-79. Chiton canariensis Orb. Moll. Canar., . . .184 



PLATE 35. 



80. Chiton marmoreus Rv. ( squamosus L.). Conch. Icon., 155 



81. Chiton squamosus L., one-half valve. Pilsbry del., .155 



