250 EXPLANATION OF PLATES, VOL. XII. 



FIGURE PAGE 



PLATE 17 (Oxystyla, Mexico). 



10, 11. O. princeps v. trifracta Pils. Sheppard, del., . .115 



12. O. princeps v. crossei Martens. Miss. Scient. Mex.,. . '116 



13. O. f'erussaci Martens. Shkolak, Yucatan. Sheppard, del., 119 



14. 15. O. ferussaci Martens. Salinas Bay, Costa Rica. Shep- 



pard, del., 119 



1C, It. O. ferussaci Martens. Biologia Centr.-Amer., . .119 

 18. O. ferussaci v. tricincta Mart. Sheppard, del., . . . 121 



PLATE 18 (Oxystyla). 



1, 2, 3. O. melanocheilus Val. Biol. Centr. Amer., . . 122 

 5. O. ferussaci tricincta Martens. Biol. Centr. Amer., . . 120 

 4, 6. O. ferussaci tricincta Martens, . . . . .120 

 7-13. O. undata floridensis Pils. Pilsbry and Sheppard, del., 110 



PLATE 19 (Oxystyla, Mexico). 



14, 15, 17. O. ponderosa Strebel. Biol. Centr.-Amer., . . 130 

 16. O. ponderosa Strehel. Beitrag Mex. Conch., . . .130 

 18, 19. 0. livida Martens. Biol. Centr.-Amer., . . . 124 



PLATE 20 (Oxystyla, etc,). 



20, 21, 22. O. boucardi Pfr. Biol. Centr.-Amer., . . .128 



23. O. boucardi Pfr. Sheppard, del., 128 



24, 25. O. boucardi Pfr. Miss. Scient. Mex., . . .128 



26. O. boucardi Pfr. P. Z. S., 1860, 128 



27, 28. Liguus fasciatus Miill. Specimen probably from Miami, 



Florida, 172 



29. Oxystyla boucardi Pfr. Sheppard, del., .... 128 



30. Drymaeus dominicus Reeve. Yuma River, San Domingo, . 3 



31. Drymaeus dominicus Reeve. Puerto Plata, Haiti, . . 3 



32. Drymaeus dominicus Reeve. Caloosahatchie R., Fla., . 3 



PLATE 21 (Oxystyla). 



33. O. longa Pfr. Sheppard, del., 126, 128 



34. O. longa Pfr. Pfeiffer's type. Strebel, Beitrag Mex. Conch., 127 



35. 36. O. longa variety. Strebel, Beitrag Mex. Conch., . .129 



37, 39. O. leucochilus F. & C. Miss. Scient. Mex., . . 129 



38. O. leucochilus F. & C. Sheppard, del., .... 129 

 40, 41, 42. O. macluras Martens. Biol. Centr.-Amer., . . 125 



PLATE 22 (Oxystyla}. 



1. O longa Pfr. Mis?. Scient, Mex., . , . . .126 



2. O. longa Pfr. Isthmus of Tehuantepec. Sheppard, del., 126, 128 



