EXPLANATION OF PLATES, VOL. XII. 251 



FIGURE PAGE 



3,4,5. O. longa v. uhdeana Mart. Sheppard, del., . .129 



6. O. longa var. Sheppard, del., .... 126, 128 



7, 8, 9. O. longa v. strebeli Pils. Sheppard, del., . . . 128 



PLATE 23 ( Oxystyla}. 



10, 11. O. zonifera Strebel. Sheppard, del., .... 123 



12. O. zonifera Strebel. Beitrag Mex. Conch., . .123 



13, 14. O. zonifera Strebel. Biol. Centr. Amer., . . 123 



15. O. livens Shuttl. Notitias Malac . 118 



16, 17. O. longa uhdeana Mart. ("0. livens" F. & C.) Miss. 



Sclent. Mex., . . . . . . .129 



18. 0. longa uhdeana Mart. (* 0. livens" Strebel.) Beitrag, etc.", 129 



PLATE 24 ( Oxystyla Drymceus}. 



19-25. O. princeps deceptor Pils. Pilsbry and Sheppard, del., 116 



26. Drymasus translucens v. subfloccosus Pils. Sheppard, del., 90 



27. Drymaeus translucens v. subfloccosus Pils. Sheppard, del., 90 



28. Drymseus translucens Brod. Conch. Illustr., . . 89 



29. Drymaeus translucens Brod. Conch. Icon., . 89 



30. Drymaeus panamensis Brod. Conch. Icon., . . 90 



PLATE 25 ( Oxystyla, etc.). 



31. 32. O. obducta Shuttl. Notitiae Malac., .... 134 

 33-36. O. obducta Shuttl. Pilsbry and Sheppard, del., . . 134 

 37,38. Drymaeus multilineatus var. parvus Lea. Sheppard, del., 29 



PLATE 26 (Mexican Drymceus). 



1. D. dombeyanus Val. Conch. Icon., . . . .33 



2, 3. D. dombeyanus Val. Biologia,. ..... 33 



4. D. dombeyanus v. alcantaraa. Journ. de Conchyl., . . 33 



5. D. dombeyanus v. alcantaras. After Strebel, . . .33 

 6-10. D. josephus Angas. Biologia, . . . . .32 



11,12. D. josephus Angas. Sheppard, del., . . . .32 



13. B. zeledoni Ball (= D. josephus Angas). Proc. U. S. 



Nat. Mus., 32 



14, 15. Drymseus zhorquinensis Angas. P. Z. S., 1879, . 31 



PLATE 27 (Oxystyla undata). 



16-18. O. undata Brug., typical. Trinidad. Sheppard, del., . 105 



19, 20, 22, 23. O. undata jamaicensis Pils. Jamaica. Shep- 



pard, del., 107 



21. O. undata jamaicensis Pils. Jamaica. Notitiae Malac., . 107 



24. O. undata reses Say. Florida. Terrestr. Moll. Ill, . 109 



25, 26. O. undata reses Say. Sugar Loaf Key, Fla. Shep- 



pard, del., ... .o .109 



