REFERENCE TO PLATES 



PLATE 1. 

 1GURE. PAGE. 



1. Katharina tunicata Wood After Reeve, . . .41 



2. Katharina tunicata Wood ; foot. Emerton del., . . 41 



3. 4. Katharina tunicata Wood ; head valve. Emerton del., 41 



5. Katharina tunicata Wood ; median valve. Pilsbry del., 41 



6, 7. Katharina tunicata Wood ; median valve. Emerton 



del., . .41 



8-11. Katharina tunicata Wood ; tail valve. Emerton del. 41 



12,13. Acanthochites formosus Rv. After Reeve, . . 33 



14-22. Acanthochites carpenteri Pils. Emerton del., . . 35 



23-26. Acanthochites speciosus Ad. & Ang. E. A. Smith del. 32 



27-35. Acanthochites involutus Cpr. Emerton del., . . 35 



PLATE 2. 



36-44. Acanthochites porrecta Cpr. (=defilippii T.-C.). 



Emerton del., 19 



45-48. Acanthochites defilippii Tap.-Can. Viag. Magenta, . 19 



49. Acanthochites hirudiniformis Sowb. (?) Emerton del., . 27 



50. Acanthochites rubjolineatus Lisch. Jap. Meeres-Conch., 18 



51. 52. Acanthochites scutiger Rve. After Reeve, . . 20 

 53, 54. Acanthochites circellatus Rve. After Reeve, . . 20 



55. Acanthochites asbestoides Cpr. Zool. " Alert," . . 17 



56. Acanthochites hirudiniformis Sowb. Conch. Illustr. . 27 



PLATE 3. 



57. 58. Acanthochites monticularis Q. & G. (=porosus). 



Voy. AstroL, .36 



59-62. Acanthochites porosus Burr. Emerton del., . . 36 

 63, 64. Acanthochites floridanus Dall. Emerton del., . . 37 

 65, 66. Acanthochites bouvieri Roch. Nouv. Arch. Mus., . 13 

 67-71. Acanthochites violaceus Q. & G. Emerton & Pils- 

 bry del., . . 39 



72, 73. Acanthochites porphyreticus Rv. (=violaceu&). Con- 

 ch. Icon., . 39 



74. Acanthochites costatus Ad. & Ang. Zool. " Alert," . 40 



PLATE 4. 



77. Acanthochites fascicularis L. After Forbes & Han ley, . 9 



78. Acanthochites fascicularis, sculpture x 60. Pilsbry del., 9 



(117) 



