354 REFERENCE TO PLATES, VOL. XVIII. 



FIGURE PAGB 



6. Subulina conf usa Pf r. Conch. Icon 225 



7. Luntia insignis Sm. J. of Conch 218 



8. Su'bulina parana Pils. Type < 225 



9. Opeas argutum Pils. Orizaba spec 211 



10. Tristania tristensis Gray. Zool. Journ 217 



11. Tristania ventricosa Gray. Zool. Journ 217 



12. Leptinaria intermedia Pils. Type 304 



13. Leptinaria urichi Sm. J. of Conch 301 



14. Leptinaria simplex Guppy. J. of Conch 301 



15. Opeas santanensis Pfr. Malak. Bl 204 



16. Tornaxis singularis Marts. Biologia 219 



17. Leptinaria lamellata P. M. Embryo spec 289 



18. Leptinaria paludinoides Orb. Moll. Cuba 295 



19. Leptinaria paludinoides Orb. Specimen 295 



PLATE 41. LEPTINARIA. 



1. Leptinaria tamaulipensis Pils. (replaced by fig. 26, 



pi. 50) 306 



2, 3. Leptinaria mexicana Pfr. Beitrag Mex 306 



4. Leptinaria m. turrita Mts. Beitrag Mex 307 



5. Leptinaria m. abbreviata Mts. Beitrag Mex , . 307 



6. 8. Leptinaria martensi Strebel. Beitrag Mex 308 



7. Leptinaria martensi var. modesta Strebel. Beitrag 



Mex 308 



9, 10. Leptinaria m. utillensis Pils. Co-types 307 



11. Leptinaria guatemalensis C. & F. Moll. Mex 312 



12. Leptinaria interstriata Tate. Co-type 310 



13. Leptinaria pittieri Marts. Biologia i 308 



14. Leptinaria p. obliquata Marts. Biologia 309 



15. Leptinaria g. majus ! cula Marts. Biologia 312 



16, 17. Leptinaria filicostata Streb. Beitrag 313 



18. Leptinaria biolleyi Marts. Biologia 316 



19. Leptinaria costaricana Marts. Biologia 316 



20. Leptinaria hapaloides Marts. Biologia . 317 



21. Leptinaria crenulata Marts. Biologia 311 



PLATE 42. LEPTINARIA. 



22. Leptinaria ambigua Marts. Biologia 318 



23. Leptinaria simpsoni Anc. Specimen 314 



24. Leptinaria f ordiana Anc. Specimen 314 



25. Leptinaria strebeliana Pils. Type 313 



26. 31. Leptinaria stolli Marts. Biologia 320 



27. 29. Leptinaria yucatanensis Pils. Type 315 



28. Leptinaria imperforata Streb. Beitrag 317 



