112 



TABLE— Continued. 



Formations in ascending 

 order. 



12 3 4 5 



15. GEN. NATiCA. — Continued. 



41. N. suhcrasm. Meek & Hayden 



42. N. occidenialis, Meek & Hayden 



43. N. Moreaumsis, Meek & Hayden... 



16. GEN. SOLARIUM. 



44. S. fiexuislriatum, Evans & Shumard.. 



17. GEN, TURBO. 



45. T. Nebrascensis, Meek & Hayden. 

 4(). T. tenuilineaiiis, Meek Si, Hayden . 



18. GEN. ROSTELLARIA. 



47. R. Nebrascensis, Evans and Shumard. 



48. R. fusiformis, Hall & Meek 



49. R. biangulata, Meek & Hayden 



19. GEN. FUSUS. 



60. F. 



51. F. 



52. F. 



53. F. 



54. F. 



55. F. 



56. F. 



57. F. 



58. F. 



59. F. 

 ■60. F. 



61. F. 



Shumardi, Hall & Meek 



tenuilineaiiis , Hall & Meek 



Dakotaensis, Meek & Hayden 



Galpinianus, Meek & Hayden . 



contorlus, Meek & Hayden 



Oulhertsoni, Meek & Hayden 



Jlexuocosiaius, Meek & Hayden 



Neicherryi, Meek & Hayden . 



Vaughani, Meek & Hayden 



suhturritus, Il^eek and Hayden 



inierteztus, Meek & Hayden 



(Fieurotoma) Scarboroughi, Meek & Hayden. 



20. GEN. BUSTCON. 



•62. B. Bairdi, Meek & Hayden 



21. GEN. FASCIOLARIA. 



63. F. CTdacea, Meek k Hayden... 

 •64. F. biuxinoides, Meek & Hayden. 



22. GEN. BUCCINUM. 



'65. B. ? vinculum, Hall & Meek . 

 66. £. condrktum, Hall & Meek. 



23. NEW GKN. psEUDOBucciNt'M, Meek & Hayden. 

 ■67. P, Nebrascensis, Meek & Hayden 



