1'26 LiMELLIBRANCHS. 



Astartella concentrica (MC^HESNEY). 



Edmondia concentrica McChesney, 1859: Desc. New Species Foss. False. 

 Rocks Western States, p. 55. 



Horizon and localities Upper Carboniferous, Lower Coal 

 Measures : Charbonier ( Saint Louis county ). 



Edmondia nuptialis WINCHELL. 



Plate xlvii, fig. 2. 

 Edmondia nuptialis Winchell, 1863: Proc. Acad. Nat. Sci., Phila., p. 12. 



A rather small form, circular in outline, with the beaks 

 rather well forward. 



Horizon and localities. Lower Carboniferous, Lower Bur- 

 lington limestone : Louisiana. 



Edmondia burlingtonensis WHITE & WHITFIELD. 



Plate xlvii, fig. 3 



Edmondia burlingtonensis White & Whitfield, 1862: Proc. Boston Soc. Nat. 

 Hist., vol. VIII. p. 301. 



Bather below medium size, elliptic in outline ; hinge-line 

 long, nearly straight; beaks set well toward the anterior end. 



Horizon and localities. Lower Carboniferous, Lower Bur- 

 lington limestone : Louisiana. 



Edmondia aspinwallensis MEEK. 



Plate xlvii, figs. la-b. 



Edmondia aspinwallensis Meek, 1871: U. S. Geol. Sur. Terr. Wyoming, 



p. 299. 

 Edmondia aspinwalltnsis Meek, 1872: U. S. Geol. Sur. Nebraska, p. 216, 



pi. iv, figs. 2a-c. 

 Edmondia aspinwallensis White, 1884: Geol. Sur. Indiana, 13th Ann. 



Rep., pt. ii, p. 148, pi. xxxi, figs. 4-5. 



Shell subovate, moderately ventricose ; cardinal margin 

 nearly straight, slightly curving downward posteriorly; beaks 

 somewhat depressed, incurved, and situated toward the ante- 

 rior. Surface smooth, with low, undulatory, concentric folds, 

 and fine lines of growth. 



Horizon and localities. Upper Carboniferous, Upper Coal 

 Measures : Kansas City. 



