332 EXPLANATION OF PLATES. 



PLATE 28 (Zaplagius Dryiuceus). 



1, 2. Drymseus aurisleporis Brug. Specimens, . . .189 



3, 4. Drymseus aurisleporis Brug. Corich. Icon., . . . 189 



5. Drymseus aurismuris Moric. Conch. Icon., . . .191 



6. Drymseus aurismuris Moric. Casteln. Exp., . . .191 



7. Drymseus aurismuris Moric. Specimen, . . .191 

 8-10. Drymseus fallax Pfr. Specimen, .... 239 



11. Drymseus bivittatus Sowb. Conch. Icon., . . . 242 



12. Drymseus bivittatus Sowb. Conch. Illustr., . . . 242 



13. 14. Drymseus bivittatus v. flexilabris Pfr. Specimen, . 243 



15. Drymseus subsemiclausus Pet. Conch. Icon., . . . 238 



16. Drymseus schmidti Pfr. Conch. Icon., . . . 195 



17. 18. Drymseus coarctatus Pfr. Novit. Conch., . .195 

 19, 20. Drymseus coarctatus Pfr. Casteln. Exped., . . 195 



PLATE 29. 



21. Neopetrseus catamarcanus Pfr. P. Z. S., . . . .170 



22. Neopetrseus rhodolarynx Rve. Conch. Icon., . . .171 



23. Neopetrseus platystomus Pfr. P. Z. S., . . .172 



24. 25. Neopetrseus lobbii Rve. Conch. Icon., . . 177 



26. Neopetrseus lobbii Rve. Young specimen, . . . 177 



27. Neopetrseus ptychostylus Pfr. P. Z. S., . . . .178 



28. Neopetrseus myristicus Rve. Conch. Icon., . . . 178 



29. 30. Drymseus narcissus Alb. Novit. Conch., . . . 227 

 31. Neopetrseus sowerbyi Rve. Conch. Icon., . . .174 

 32-34. Neopetrseus vadum Pils. Specimen, . .165 

 35-37. Neopetrseus columna Pils. Specimen, . . . 180 

 38. Neopetrseus rhodolarynx Rve. Casteln. Exp., . 171 



PLATE 30. 



1,2. Neopetrseus cora Orb. Voy. Am. Mer., . . .166 



3, 4. Neopetrseus cora var. unicolor Pfr. Novit. Conch., . 167 

 5-8. Neopetrseus filiola Pils. Specimen, .... 165 



9. Bulimulus thamnoicus Orb. Specimen, . . . .19 



10-13. Bulimulus corseformis Pils. Specimen, . . .15 



PLATE 31. 



14-16. Neopetrseus atahualpa Dohrn. Novit. Conch., . .168 



17, 20. Neopetrseus atahualpa Dohrn. Specimen, . . . 168 



18, 19. Neopetrseus perincrassatus Pils. Specimen, . .169 

 21-23. Neopetrseus tessellatus Shutt. Novit. Conch., . . 167 

 24-27. Neo petrseus millegranus Mart. Conch. Mittheil., . 170 

 28, 29. Neopetrseus papillatus Morel. Ser. Conch., . . 169 



