132 LAMELLIBRANCHS. 



Cardium lexingtonemis Swallow, 1858 : Trans. St. Louis Acad. Sci. , vol. 1, 



p. 206. Coal Measures: Lexington. Poorly defined. 

 Cypricardinella gorbyi Miller, 1891: Geol. Sur. Indiana, 17th Ann. Kept., 



Adv. sheets, p. 92. Keokuk limestone : Boonville. Probably synon- 

 ymous with species already described. 

 Cypricardia plicatula Swallow, 1858: Trans. St. Louis Acad. Sci., vol. I, 



p. 205. Coal Measures: Platte county. Cannot be recognized. 

 Cypricardia pikensis Swallow, 1863: Trans. St. Louis Acad. Sci., vol. II, 



p. 95. Coal Measures: Pike county. Poorly defined. 

 Cypricardia occidentalis Swallow, 1863: Trans. St. Louis Acad. Sci., vol. 



II, p. 96. Not recognizable. 

 Cypricardia chouteauensis Swallow, 1863: Trans. St. Louis Acad. Sci., 



vol. II, p. 96. Chouteau limestone : Cooper county. Described 



insufficiently. 

 Edmondia marionensis Swallow, 1860: Trans. St. Louis Acad. Sci., vol. I, p. 



654. Chouteau limestone : Cooper county. Cannot be identified. 

 Grammysia blairi Miller, 1891: Geol. Sur. Indiana, 17th Ann. Rep., Adv. 



sheets, p. 93. Chouteau limestone: Sedalia. Probably identical 



with forms already described. 

 Isocardia curia Shumard, 1858: Trans. St. Louis Acad. Sci., vol. I, p. 



206. Coal Measures : Charboniere. Cannot be recognized. 

 Macrodon micronema Meek & Worthen, 1866: Proc. Acad. Nat. Sci., 



Phlla., p. 261. Kiskaskia limestone: Ste. Genevieve county. Can- 

 not be recognized . 

 Pernopecten sedaliensis Miller, 1891: Geol. Sur. Indiana, 17th Ann. Rep., 



Adv. sheets, p. 93. Chouteau limestone : Sedalia. Too imperfect 



for recognition. 

 Solen missounensis Swallow, 1860: Trans. St., Louis Acad. Sci., vol. I, 



p. 655 Poorly defined. 



