504 The Molluscan Family Planorbidae 



PLATE 134 



Shells of Planorbidae 



1-3. Tropicorbis paparyc7isis (F. Baker). Anapolis, Goyaz, Brazil. M.C.Z., 65717. 



4-6. Tropicorbis albicans (Pfr.). Cuba. U.I., Z40459. 



7. Tropicorbis schrammi (Crosse). Antigua. U.I., Z40465. 



8,9. Tropicorbis dentiferus (C. B. Adams). Bog Walk, St. Catherine, Jamaica. M.C.Z., 



65838. 

 10,11. Tropicorbis obstruents (Morelet). Catamas Lake, El Abra, Mexico. B1218. 



12. Tropicorbis shimeki F. C. Baker. Ometope, Nicaragua. Holotype. U.S.N.M., 



534290. 



13, 14. Tropicorbis shitneki F. C. Baker. Ometope, Nicaragua. Paratypes. U.S.N.M., 



534290. 

 15-18. Tropicorbis albicans (Pfr.). Mangrove Cay, along Kings Road, Lisbon Point, 

 Andros Island, Bahamas. U.S.N. M., 270084. 



19. Tropicorbis albicans (Pfr.). Cuba. U.I., Z40459. 



20. Tropicorbis paparyensis (F. Baker). Anapolis, Brazil. M.C.Z., 65717. 



21. Tropicorbis obstructus donbilli (Tristram). Tamosopo, Mexico. I^.L, Z28545. 



Figures 18 to 21 illustrate form of lamellae in aperture 



22. Tropicorbis obstructus (Morelet). Pistae, Yucatan. M.C.Z., 59754. 



23. Tropicorbis obstructus donbilli (Tristram). Tamosopo, Mexico. U.L, Z28545. 



24. Tropicorbis janeirensis (Clessin). Bahia, Brazil. U.S.N.M., 152677. 



25. Tropicorbis nigrilabris (Lutz). Brazil. U.S.N.M., 535713. 



26. Tropicorbis paparyensis (F. Baker). Anapolis, Brazil. M.C.Z., 65717. 



27. Tropicorbis schrammi (Crosse) . Martinique. U.L, Z40464. 



28. Tropicorbis shimeki F. C. Baker. Coatzocoalcos, Mexico. U.S.N.M., 219696. 



29. Tropicorbis albicans (Pfr.). Mangrove Cay, Andros, Bahamas. U.S.N .M., 270084. 



Figures 22 to 29 illustrate lamellae on parietal wall 

 Figures 1 to 11 are enlarged about four diameters; figs. 12 to 29, six diameters. 



