BRACHIOPODS. 107 



Terebratula brevilobata Swallow, 1863: Trans. St. Louis Acad. Sci., vol. 



II, p. 84. Keokuk limestone.: Ste. Genevieve county. Cannot be 



identified. 

 Terebratula arcuata Swallow, 1863: Trans. St. Louis Acad. Sci , p. 83. 



Kaskaskia limestone : Ste. Genevieve county. Cannot be recognized. 

 Ttrebratula gracilis Swallow, 1863: Trans. St. Louis Acad. Sci., vol. II, 



p. 83. St. Louis limestone: St. Miary. Not recognizable. 



