SYNOPSIS OF GROUPS. 



123 



Group HAPLOGONA Pils. 



3, Flammulina Mart., 10. 



Phacussa Hutt., 12. 

 Thalassohelix Pils., 12. 

 Gerontia Hutt., 14. 

 Allodiscus Pils., 14. 

 Pyrrha Hutt., 15. 

 Therasia Hutt, 15. 

 Phenacohelix Sat., 16. 

 Suteria Pils., 17. 

 Flammulina Mart., 17. 

 Hedleyoconcha Pils., 18. 

 Monomphalus Anc., 19. 

 Rhytidopsis Anc., 20. 

 Carthcca Hutt., 339. 



4, PhasisAlb.,36. 



Trachycygtis Pils., 37. 

 ?Sculptaria Pfr., 39. 



5, Amphidoxa Alb., 39. 



Stepkanoda Alb., 40. 



6, Endodonta Alb., 20. 



Dlolyptus Pils. 22. 

 Libera Garr., 23. 

 Endodonta Alb., 24. 

 Thaumatodon Pils., 26. 



Group . 



8, Pararhytida Anc., 52. 



Platyrhytida Ckll., 342, 53. 



Family HELICIDJE Pilsbry (vol. ix, p. xxviii). 

 Group PROTOGONA Pils., xxxii (Pplygyrince). 



Nesophila Pils., 27. 



Ptychodon Anc., 27. 



Helenoconcha Pils., 28. 

 Brazieria Anc., 29. 

 Phenacharopa Pils., 29. 

 jEschrodomus Pils., 30. 

 Paratrochus Pils., 31. 

 ? CWtWwsTap.-Can., 171. 

 Charopa Alb., 31. 



Aeanthoptyx Anc., 35. 



Tropidotropis Anc., 36. 



Pterodiscus Pils., 36. 

 Pyramidula Fitz., 42. 

 Pyramidula Fitz., 43. 



Microconus Streb,, 340. 



Patulaatra Pfr., 44. 



Planogyra Morse, 45. 



Gonyodiscns Fitz., 45. 

 Lyrodiscus Pils., 341. 

 Lynda Woll., 341. 

 Patula Held., 48. 

 Atlantlca ARC., 50. 

 Helicodiscus Morse, 51. 



1, Praticolella Mart., 67. 



2, Polygyra Bay, 68. 



Polygyra Say, 71. 

 Triodopsi* Raf., 74. 

 Stenotrema Raf'., 77. 



3, Polygyrella Binn., 78. 



Ammonitella Coop., 80. 



4, Polygyratia Gray, 81. 



Systrophia Pfr., 83. 

 ? Coxia Anc., 83. 

 ? Solaropsis Beck, 16(i. 



5, Dorcasia Gray, 172. 



