2J2 The Ametican Geologist. May, i90t> 
Spirifer lotiisianensis (nov. sp.)- 
Figs. i8, 19, 20. Brachial valve, cardinal view and pedicel valve, nat- 
ural size. 
Fig. 64. Surface enlarged. 
Seminula bisinuata (nov. sp.). 
Figs. 21, 22, 23. Brachial valve, pedicel valve and profile view of a 
large specimen, natural size. 
Fig. 24. Front view, 
Hustedia pygmaa (nov. sp.). 
Figs. 25, 26, 27. Pedicel valve, brachial valve and profile views, 
natural size. 
Eta7ietria persfrialis (nov. sp.). 
Figs. 28, 2Q, 30. Brachial valve, pedicel valve, profile view, natural 
size. 
Athyris tenuilmeata (nov. sp.). 
Figs. 31, 32, 33. Brachial valve, pedicel valve, profile view, natural 
size. 
Retzia ? raricosta (nov. sp.). 
Figs. 34, 35, 36, 37. Brachial valve, pedicel valve, profile and front 
views, natural size. 
Nucleospira obesa (nov. sp.). 
Figs. 38, 39, 40. Brachial valve, pedicel valve and profile view, nat- 
ural size. 
Rhipidomella diminutiva (nov. sp.). 
Figs. 41, 42, 43. Brachial valve, cardinal view, pedicel valve, nat- 
ural size. 
Camarotcechia elegantula (nov. sp.). 
Figs. 44, 45, 46, 47. Brachial valve, pedicel valve, profile and front 
views, natural size. 
CentroneHa emaciata (nov. sp.). 
Figs. 48, 49, 50. Brachial valve, pedicel valve, profile views, natural 
size. 
Terebratula fabiilites (nov. sp.). 
Figs. 51, 52, 53. Brachial valve, pedicel valve, profile view, natural 
size. 
Conocardium spintilatiim (nov. sp.). 
Figs. 54, 55, 56. Left side, cardinal and side view, natural size. 
Fig. 63. Surface enlarged. 
Macrochilina tantilla (nov. sp.). 
Figs. 57, 58. Lateral views of two different specimens, natural size. 
Grammysia imbricata (nov. sp.). 
Figs. 60, 61, 62. Right valve, two views. Enlarged surface. 
