REFERENCE TO PLATES, VOL. XV. 319 



71. Urocoptis coronadoi Arango. Novit. Conch 21 8 



72, 72, 73. Urocoptis gutierrezi Ar. Pilsbry, del 216 



74. Urocoptis pruinosa Morel. Pilsbry, del 260 



75, 76. Urocoptis pruinosa Morel. Conchyl. Cab 260 



77. Urocoptis crispula Pf r. Philippi, Abbild 217 



78, 79. Urocoptis hidalgoi Arango. Pilsbry, del 247 



80. Urocoptis cristallina Wr. Novit. Conch 227 



81, 82. Urocoptis cristallina Wr. Pilsbry, del 227 



83. Urocoptis lavalleana (= trinidadensis Pils.). Pils- 



bry, del 226 



84. Urocoptis lavalleana ( trinidadensis Pils.). 



Conchyl. Cab 226 



85. 86. Urocoptis lavalleana Orb. Moll. Cuba 225 



87. Urocoptis lavalleana trinidadensis Pils. Pilsbry, del. 226 



PLATE 55. 



90. Urocoptis thomsoni Arango. Pilsbry, del , 243 



91, 92. Urocoptis thomsoni Arango. J. de C., 1890 243 



93. Urocoptis acus Pf r. Pilsbry, del 242 



94. Urocoptis acus Pfr. Conchyl. Cab 242 



95. 96. Urocoptis decolorata Gundl. Novit. Conch 240 



97. Urocoptis decolorata Gundl. Pilsbry, del 240 



98. Urocoptis adnata Pfr. Novit. Conch 241 



99. Urocoptis assimilis Arango. Pilsbry, del 245 



1, 6. Urocoptis f raterna Pils. Pilsbry, del 228 



2, 9. Urocoptis distincta Gundl. Pilsbry, del 226 



3, 4. Urocoptis crenulata Gundl. Novit. Conch 241 



5. Urocoptis capillacea Pfr. Pilsbry, del 234 



6. Urocoptis f raterna Pils. Pilsbry, del 228 



7. Urocoptis concreta Gundl. Pilsbry, del 233 



8. Urocoptis capillacea Pfr. Pilsbry, del 234 



9. Urocoptis distincta Gundl. Pilsbry, del 226 



10, 11. Urocoptis distincta Gundl. Pilsbry, del.. 226 



PLATE 56. 



12, 13. Urocoptis torquata Morel. Conchyl. Cab. . . 237 



14-16. Urocoptis torquata Morel. Pilsbry, del 237 



17, 18. Urocoptis irrorata Gundl. Conchyl. Cab 239 



19. Urocoptis irrorata Gundl. Pilsbry, del 239 



20, 21. Urocoptis sauvalleana Gundl. Conchyl. Cab 238 



22. Urocoptis sauvalleana Gundl. Pilsbry, del 238 



23. Urocoptis tumidiora Sowb. Conch. Icon 239 



24. 25. Urocoptis arcustriata Wr. Novit. Conch 244 



26, 27. Urocoptis assimilis Arango. Journ. de Conch 245 



