REFERENCE TO PLATES. 359 



PLATE 51a. 



FIGURE. PAGE. 



[By error this number was duplicating in preparing the plates. 

 As the figures are entirely different, there need be no confusion in 

 actual reference from the text]. 



1-6. Ampelita xystera Val. (from no. 63,879 Acad. coll. 



Pilsbry, del 155 



7-12. Thersites (Khagada) solorensis Mart. After Wiegm. 135 



PLATE 52. 



12. Cepolis (Coryda) alauda Fer. Pilsbry, del. . . .182 



13. Cepolis alauda, penis with flagellum. The thread-like 



retractor should pass over v.d. and insert on penis, 182 



14. Cepolis (Hemitrochus) varians Mke. Pilsbry, del., . 184 



15. Cepolis (Plagioptycha) salvatoris Pfr. Pilsbry, del. . 185 



16. Cepolis (Cysticopsis) cubensis Pfr. Pilsbry, del. . .187 



17. Epiphragmophora cordovana Pfr. After Strebel, . . 197 



18. 19, 20, 22. Cepolis (Eurycampta) bonplandi Lam. Pils- 



bry, del. . .... 181 



21. Cepolis (Jeanneretia) parraiana Orb. After Poey, . 180 



PLATE 53. 



1. Helicosyla (Orustia) versicolor Mlldff. Shepperd, del. . 225 



2. Helicostyla (Helicobulinus) turbinoides Brod. Shepperd, 



del 227 



3. Helicostyla (Orthostylus)pithogaster Fer. After Hidalgo, 227 



4. Helicosyla (Canistrum) ovoidea Brug. Shepperd, del. . 230 



5. Helicostyla (Phengus) opalina Sowb. After Pfeiffer, . 230 



6. Helicostyla(Hypselostyla)connectens Mlldff. After Mlldff. 228 



7. Helicostyla mirabilis Per. After Hidalgo, . . . 224 



8. Helicostyla (Chrysallis) chrysalidiformis Sowb. After Eve. 231 



9. Helicostyla (Prochilus) virgata Jay. Shepperd, del. . 231 



10. Helicostyla (Cochlodoyas) viridostriata Lea. Shepperd, 



del. . 225 



11. Helicostyla (Eudoxus) effusa Pfr. After Keeve, . . 229 



PLATE 54. 



1. Helicosyla (Canistrum) stabilis Jonas. After Semper, . 230 

 2-4. Chloneabenguetensis Semp. After Semper, . . 215 

 5. Helicostyla (Orustia) monticula Sby. After Semper, . 216 

 6-8. Helicostyla butleri Pfr. After Semper, . .' .216 

 9. Helicostyla (Orthostylus) pithogaster Fer. After Semper, 217 



10. Helicostyla (Calocochlea) festiva Don. After Semper, 216 



11. Helicostyla (Eudoxus) segle Brod. After Semper, . 216 



12. Helicostyla (Calocochlea) pulcherrima Sowb. After Semper, 216 



