LIST OF PLATES 



Facing page. 



1. Orbital Variations of Anamaihia 62 



2. Irregular Stalactites, Wyandotte Cave, Indiana 78 



3. Irregular Stalactites, Luray Caves, Page County, Virginia 78 



4. Gypsum Incrustations, Mammoth Cave, Kentucky 80 



5. Gyi^.sum Incrustations, Wyandotte Cave, Indiana 80 



6. Ccmcretions of Marcasite and Siliceous Sand 88 



7. Gnathodons of Nortli America 106 



8. Fresli- water Mollnsks of the Dakota Formation 138 



9. Fossil I'lauts from Ilerendeen Bay, Alaska 240 



10. A large Tulip Tree (Liriodendron iul'qnfeva), Knox County, Indiana 421 



11. Giant Sycamores {I'htUin us occidentaJh), Gibson County, Indiana 421 



12. Giant Sycamores {Flalanus occidenialis), Gibson County, Indiana 421 



13. A tall Sycamore {Platanus occidentaUs), Richland County, Illinois 421 



14. Typical Upland Forest, Lower Wabash Valley 421 



15. Typical Bottom-land Forest, Lower Wabash Valley 421 



16. New Species of Mollnsks from Jamaica 450 



17. New Species of Bathybial Fishes 454 



18. Generic types of Macdonaldia and Lijjogenys 470 



19. New Species of Harr'wita 472 



20. Odontodaciyhts Itaranensis 498 



21. Squilla hifonnls 532 



22. SqitiUa alba 540 



23. Anatomy of Halicardia and Eiiciroa 733 



24. Pacific Shells and Brachiopods 733 



25. Pelecypods from the Pacifi c Coast 733 



26. Shells from the Pacific Coast 733 



27. Shells from the Pacific Coast 733 



28. Alaskan Species of StromhelJa 733 



29. Alaskan Species of Chrysodom us 733 



30. Pacific Shells and Brachiopods 733 



31. Pacific Shells and Brachiopods 733 



32. Pacific Brachiopods 733 



XIII 



