364 EXPLANATION OP PLATES. 



FIGURE PAGE 



8. G. longnrio Cr. After Crosse ...................... 82 



7, 10. G. pellucida biminiensis Pils. Rosario, Cuba ..... 78 



11-13. G. pellucida biminiensis Pils. South. Bimini Cay. 



114028 .................................... 78 



PLATE 16. Gastrocopta. 



1-27. G. pellucida hordeacella Pils. Localities on p. 80. . 78 

 drawn to one scale, by E. G. Vanatta. 



PLATE 17. Gastrocopta. 



1, 2. G. pellucida hordeacella Pils. Drift of Pecos River, 



Texas. 90494 .............................. 78 



3. G. pellucida hordeacella Pils. New Braunfels, Texas. 



60460 ..................................... 78 



4. G. pellucida hordeacella Pils. Guajadami, L. Cal. 



190397 U. S. N. M ......................... 78, 80 



5. 6. G. polyptyx Pils. St. Thomas. 60547 ............ 89 



7. G. polyptyx Pils. Jamaica. 10035 ................. 89 



8. G. pellucida parvidens St. Jerome, Arizona. 78717 . . 80 



9. G. oblonga Pfr. After Kiister ..................... 90 



10. G. nodosaria Orb. After d'Orbigny ............... 94 



11,12. G. barbadensis solitaria Smith. After E. A. Smith. 88 



13. G. pazi Hidalgo. After Hidalgo .................. 102 



14. G. oblonga Pfr. Fortaleza. 171445 U. S. N. M ..... 90 



15. G. oblonga Pfr. Para. 91128 .................... 90 



16. G. iheringi Sut. Paratype. 22940 ................ 101 



PLATE 18. Gastrocopta. 



1, 3. G. barbadensis Pfr. Barbados. 85464 ............ 83 



2. G. barbadensis Pfr. Barbados. 57202 .............. 83 



4, 5. G. barbadensis Pfr. Guadalupe. 59903 ........... 83 



6. G. b. crassilabris Pils. Somerset, Bermuda. 1017520. 85 

 7-9. G. b. crassilabris Pils. Mangrove Cay, Andros. 180645 



U. S. N. M ................................. 85 



10, 12. G. barbadensis Pfr. Varadero Park, Cuba ..... 83, 85 



11. G. uvulifera Guppy. After E. A. Smith ........... 87 



PLATE 19. Gastrocopta. 



1-3, 6, 8. G. munita Reib. Albemarle. 215785 U. S. N. M. 96 

 4, 5. G. pfeifferi Bttg. (= munita). After Boettger . . .96, 98 



7. G. munita Reib. After Reibisch ................... 96 



9. G. clausa Reib. After Reibisch .................... 99 



10. G. munita Reib. Iguana Cove. 215782 U. S. N. M. 96 



