REFERENCE TO PLATES. 
PRATE Os. 
FIGURE, 
81-83. Pleurobranchzea meckelii Bly. Pilsbry, del., 
84. Pleurobranchea meckelii Blv. After Bergh, . 
' 85. Pleurobranchzea meckelii Blv. After Cantraine, . 
86. Pleurobranchea tarda Verrill. After Verrill, . 
87. Pleurobranchzea noveezealandiz Cheesem. | a ices 
88, 89. Pleurobranchzea maculata Q. & G. oo Astrol., 
90. Oxynoe antillarum Morch. Pilsbry, del., 
PLATE 54. 
90-94. Koonsia morosa Bgh. After Bergh, 
95, Pleurobranchzea luniceps Cuv. After Cuvier, Noa s 
96, 97. Pleurobranchexa luniceps Cuv. After Adams, . 
98, 99, 1, 2. Pleurobranchus digueti Roch. eu del., 
3. Aglaja orbignyana Roch. Nouv. Archiv., . 
4,5. Oscanius dilatipes Ads. Gen. Rec. Moll., 
PLATE 55. 
1-4. Tethys willcoxi var. perviridis Pils. Pilsbry, del., 
5, 6. Tethys robertsi Pils. Pilsbry, del., Beech ee 
7-9. Petalifera ferussaci Rang. After Rang, 
10-12. Petalifera virescens Risso. After Vay ssiere, a. 4 
13, 14. Petalifera quadrata (=virescens). After Sowb., 
PLATE OG: 
18, 14. Tethys californica Coop.  Pilsbry, del., . 
15-17. Tethys lessoni Rang. After Rang, . 
PLATE 57. 
18, 19. Tethys angasi ‘ Sowb. Conch. Icon., 
20°21. Tethys tigrina Sowb. (=sowerbyi). ” Conch. Icon., 
22, 23. Tethys sydney ensisSowb. Conch. Icon., 
24-27. Tethys tryoniana Pils. Pilsbry, del., 
PLATE 658. 
28, 29. Tethys gigantea Sowb. Conch. Icon., 
30, 31. Tethys hyalina Sowb. (—excavata). Conch. Icon., 
32, 83. Tethys excavata Sowb. Conch. Icon., . 
PLATE 59. 
34. Tethys fusca Tiles. After Rang,. .. . 
35, 36. Tethys elongata Pse. Don. Bism., . 
249 
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5 228 
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BS) 
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81 
89 
= 130 
129 
- 130 
89 
86 
- LOL 
7 LOL 
101 
96 
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100 
. 104 
93 
