300 REFERENCE TO PLATES, VOL. XIV. 



FIGURE 



17-19, 21. Thammastus taunaisii Fer. Genitalia. Pilsbry, del. 

 20. Bothriembryon melo Q. Genitalia. After Semper. 



22. Placostylus elobatus Gld. Genitalia. After Semper. 

 23-25. Placostylus shongii. Genitalia. Pilsbry, del. 



PLATE 52. 



23. Bulimulus dealbatus Say. Genitalia x2. Pilsbry, del. 



24. Bulimulus guadalupensis Brug. Genitalia. Pilsbry, del. 



25. Bulimulus montezuma Dall. Genitalia x2. Pilsbry, del. 



26. Gonyostomus multicolor Rang. Genitalia x2. Pilsbry, del. 



27. Gonyostomus multicolor Rang. Vagina, etc. Pilsbry, del. 



28. Bulimulus pallidior Sowb. Genitalia x3. Pilsbry, del. 



29. Bulimulus versicolor Brod. Genitalia. After Strebel. 



PLATE 53. 



30. Bulimulus dealbatus Say. Pallial organs. Pilsbry, del. 



31. Bulimulus guadalupensis Brug. Pallial organs. Pilsbry, del. 



32. Bulimulus montezuma Dall. Mantle-edge. Pilsbry, del. 



33. Bulimulus montezuma Dall. Pallial organs x2. Pilsbry, del. 



34. Oxystyla undata jamaicensis Pils. Pallial organs x3. Vanatta 



del. 



35. Gonyostomus multicolor Rang. Foot. Vanatta del. 



PLATE 54. 



36. Oxystyla undata jamaicensis Pils. Free muscles. Vanatta, del. 

 37.- Gonyostomus turnix Gld. Free muscles. Pilsbry, del. 



38. Zaplagius aurisleporis Brug. Pallial organs x2. Pilsbry, del. 



39. Bulimulus dealbatus Say. Free muscles. Pilsbry, del. 



40. Drymaeus acervatus Pfr. Pallial organs x2. Pilsbry, del. 



41. Placostylus shongii Less. Free muscles. Vanatta, del. 



PLATE 55. 



42. Oxystyla princeps Sowb. Genitalia. Vanatta, del. 



43. Orthalicus sultana Dillw. Genitalia. After Strebe. 



44. Oxystyla u. jamaicensis Pils. Genitalia. Vanatta,ldel. 



45. Porphyrobaphe iostoma Brod. Genitalia. After Fischer. 



46. Oxystyla pulchella Spix. Genitalia. Vanatta, del. 

 47-49. Orthalicus atramentarius Pfr. Genitalia. After Strebel. 



