Pleu. 



702 



Pleurophorus ? angulatus, Meek and Worthen, Proc. 

 Xy, ^ Acad. Nat. Sci. Phil., 1865; Geo. Sur. 111., Vol. 

 ^-^'^■i|l| 6, 1875, page 529, plate 33, fig. 5, New Harmony, 

 *^iSS^- Ind. Upper Coal measures. XV* 



Pleurophorus oblongus ? Meek, Pal. E. Neb. 1872, M. & 



W., Geo. Sur. 111., Vol. 5, 

 1873, page 589, plate 26, 

 figs. 6 aj 5, Springfield, 111. 

 Upper Coal measures. XY, 



XI 



Pleurophorus quadricostatus, Dawson, Acad. Geology, 

 ,07 1868, page 304, fig. 107, a curiously shaped 

 small shell of the Carboniferous limestone of 

 304. Nova Scotia. — XI. 



Pleurophorus subcostatus. Meek and Worthen, Proc. 



Acad. Nat. Sci. Phil., 1865. M. 

 & W., Geo. Sur. 111., Vol. 2, 

 1873, page 347, plate 27, figs. 

 2, side view of internal cast, 

 showing muscular and pallial 

 impressions, and of long hind hinge-tooth; 2 <^, back of same. 

 Apparently related to the English P. costatus of Brown (sp.) 

 among King's Permian fossils (plate 15), but shows differences. 

 Perhaps identical with P. subcuneatus, Meek & Hayden, Per 

 mian.^ {Permo- Carboniferous) beds of Kansas, but grew much 

 larger and has a distinct sinuous base. Gallatin Co., 111. Up- 

 per Coal measures. XV. 



Pleurophorus tropidophorus. Meek, Pal. Ohio, Vol. 2, 



1875, page 338, plate 

 19, fig. 10 a, cast of 

 outside of right valve; 

 5, cast of inside of left 

 valve, with impres- 

 sions of side teeth ; 

 strikingly like Cypricardia striatolamellosa^De Koninck, An- 

 Foss. Carbon. Belgium, but without its deeplunule, etc. XIII. 



Pleurophorus .^ In the Barren measures., 250' beneath 



the Pittsburgh coal bed. K3, p. 310, L, p. S6,—XIV. 



Fa/^0/?/o.Vo/jr,m 



