REFERENCE TO PLATES. 351 



FIGURE. PAGE. 



17. Obba basidentata Pfr. After Hidalgo, . . . .107 

 18,19. Planispira(Trachiella) tuckeri Pfr. Pilsbry, del. . 104 

 20-22. Planispira (Angasella) cyrtopleura Pfr. Shepperd, 



del 114 



23, 24. Planispira (Trachia) vittata Mull. Shepperd, del. . 115 



25. Planispira (Trachia) asperella Pfr. Conch. Icon. . .115 



PLATE 20. 



26, 27. Praticolella griseola Pfr. Biol. Centr. Amer. . . 67 

 28. Praticolella berlandieriana Moric. Shepperd, del. . . 67 

 29-31. Praticolella flavescens Pfr. Biol. Cent. Amer. . . .67 

 32-34. Polygyrella (Ammonitella) yatesi Coop. Pilsbry, del. 81 

 35, 36. Sagda (Odontosagda) hillei Gundl. Pilsbry, del. . 65 

 37,38. Polygyratia polygyrata Born. Shepperd, del. . . 81 

 39, 40. Entodina reyrei Sow. Shepperd, del. . . .342 

 41, 43. Polygyratia stenogyra Pfr. Shepperd, del. . . 83 

 44-46. Coxia macgregori Cox. Conchyl. Cat. . . .83 



PLATE 21. 



1-5. Praticolella ocampi ampla Pfr. After Strebel and 



Pfeffer, 67 



(fig. 3, penis and appendix opened ; fig. 4, talon). 



6. Praticolella griseola Pfr. After W. G. Binney, . . 67 



7, 8. Sagda cookiana Gmel. Pilsbry, del. . . . .59 

 9. Sagda cookiana, penis ; flagellum above, appendix on left 



side, epiphallus branching to right, where retractor 

 is inserted ; vas deferens descending. Drawn by 

 Pilsbry from specimen collected by J. B. Henderson 59 

 10. Appendix of same partly uncoiled, . . . . .59 

 11-14. Polygyra albolabris Say. Pilsbry, del. . . .70 



15. Atrium and penis of same opened, showing pilaster, . 70 



16. Section of swollen base of spermatheca duct of same, . 70 



PLATE 22. 



1. Pleurodonte (Luquillia) gigantea Scop. Shepperd, del. . 100 



2. Pleurodonte (Parthena) angulata Fer. Shepperd, del. . 98 



3. Pleurodonte (Parthena) dominicensis Pfr. Shepperd del. 98 



4. Pleurodonte (Zachrysia) trinitaria Gundl. Shepperd, del. 96 



5. Pleurodonte (Thelidomus) lima Fer. Shepperd, del. . 96 



6. Pleurodonte (Eurycratera)jamaicensisChemn. Shepperd, 



del 100 



7. 8. Pleurodonte (Labyrinthus) sieversi Mart. Conch. 



Mittheil 95 



9,10. Pleurodonte (Polydontes) imperator Montf. Shepperd, 



del. 98 



