350 REFERENCE TO PLATES, VOL. XVIII. 



PIGCEB PAGE 



48. Opeas glomeraturn Rve. Conch. Cab 210 



49. Opeas micra Orb. Voy. Am. Merid 193 



50. Opeas camba Orb. Voy. Am. Merid 209 



51. Opeas glomeratum Rve. Conch. Icon 210 



52. 53. Opeas gabbia.nmn Ang. P. Z. S 192 



54. Opeas beckianum Pf r. Haiti spec 191 



55. Opeas beckianum Pfr. Mirador spec 190 



56. Opeas micra Orb. Kingston spec 193 



57. Opeas niicra Orb. Cuban spec 193 



PLATE 28. AMERICAN OPEAS. 



58. Opeas micra Orb. Hondo, Colombia 194 



59. Opeas micra Orb. S. J. Bautista 194 



60. 61. Opeas micra Orb. Miami, Fla 195 



62. Opeas in. margaritaceum Sh. Porto Rico 196 



63. Opeas m. tryonianum Tate. Co-type 196 



64. Opeas in. lucidum (= micra). Memorias 195 



65. Opeas m. subovale Marts. Biologia 197 



66. 67. Opeas aciculaeforme (= goodalli). Mai. Bl 203 



68. Opeas argutum Pils. Texolo, V. C 211 



69. Opeas yncatanense Pils. Type 212 



70. Opeas gracile Hutt. Havana 198 



71. Opeas octonulum Weinl. (= gracile). Haiti 200 



72. 73. Opeas goodalli Mill. Cuban spec 200 



74. Opeas goodalli Mill. Para, Brazil 200 



PLATE 29. AMERICAN OPEAS. 



75. Opeas o. plicatellum Gp. Trinidad 207 



76. 77. Opeas octogyrum Pfr. Demerara 206 



78. Opeas o. amazonicum Pils. Type 208 



79. Opeas octogyrum Pfr. Strebel 206 



80. Opeas pellucidum Pfr. Conch. Icon 206 



81. Pseudopeas viviparum Mill. Mai. Bl 216 



82. 83. Opeas rarum Mill. Mai. Bl 208 



84, 85. Opeas semistriatum Morel. Moll. Mex 212 



86. Opeas martensi Strob. Mai. Argent 205 



87, 88. Opeas bocourtianum C. & F. Moll. Mex 213 



89. Opeas g. majus Marts. Biologia 214 



90. Opeas b. pittieri Marts. Biologia 213 



91. Opeas guatemalense Streb. Strebel 213 



92. Opeas colimense C. & F. Moll. Mex 215 



93. Opeas gladiolus C. & F. Moll. Mex 214 



94. Opeas colimense C. & F. Specimen 215 



