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 

 18. O. ferussaci 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., . . . 12] 



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 Strebel. Beitrag Mex. Conch., . . .130 

 18, 19. O. 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 Mull. Specimen probably from Miami, 



Florida, 172 



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



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



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



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. maclurae Martens. Biol. Centr.-Amer., . . 125 



PLATE 22 (Oxystyla). 



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



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



