757 



Prod. 



Whitfield Bull. 3, Am. Mus. plate 6, figs. 8-12.) Collett's In- 

 diana Rt. 1882, page 325, plate 29, fig. 8, enlarged twice^ inside 

 surface of dorsal valve from Ind. ; fig. 9, natural size^ another 

 spec, from 111.; figs. 10, 11, 12, a large specimen from Spergen 

 Hill, Ind. Subcarhoniferous limestone. XL 



Productus cestriensis, Worthen, Trans. St. Louis Acad. 

 Sci. 1860, Chester limestone of Missouri. ( Productus elegans^ 

 Norwood and Pratten, 1854, name pre-occupied.) — In Pennsyl- 

 vania, Fayette Co., Loyalhanna gap, found by Stevenson (K2, 

 p. 291, K3, p. 311) in the Mauch Chunk red shale limestone, 

 XL 



Productus cora. Owen's Geol. Wis. 1852, pkte 5, fig. 1, 



from the 

 ' ^ ^ Missouri 



river, be- 

 low Little 

 Platte 

 river. XL, 





Ow. P.c. 



Productus cora. {Productus prattemanus^ Norwood & 

 X|]|,, ^^m^ .^ai^ 2. 



Ind. Repor,fc 1883. 



