324 SYNOPSIS OF AMERICAN FOSSIL BKACHIOFODA. [bull. 87. 



Productus fentonensis Swallow. Keokuk (L. Carb.). 



rroiluctiLS fentoiieusis Swallow, Trans. St. Louis Acad. Sci., II, 1863, p. 'J'd. 

 Loc. Fen ton, St. Louis County, Missouri. 

 Ohs. Keyes says this is a synonym for P. magnus. 



Productus fimbriatus Sowerby. ^St. Louis. Clipper Carboniferous. 



Productus limbriatus Sowerby, Mineral Conchology, V, 1824, p. 85, pi. 459, lig. 



1, — Norwood and Pratteu, Jour. Acad. Nat. Sci. Philadeliihia, III, 1854, p. 



19.— Etheridge, Quart. Jour. Geol. Soc. London, XXXIV, 1878, p. 630. 

 Loc. Alton, Illinois; Posey County, Indiana; Feildeu Isthmus, lat. 82° 43'. 

 Oha. Compare with Productus alternatus Norwood aud Pratten. 



Productus flemingi Geiiiitz (uou de Kouiiick) = Productus coia. 

 Productus flemingi Marcou, and E/0emer= Productus longispina. 

 Productus flemingi burlingtoneusis Ha]l=Productus burliugtouensis. 



Productus flexistria McCoy. Kaskaskia (L. Carb.). 



Productus flexistria McCoy, Synopsis Carb. Fossils of Ireland, 1844, p. 100, pi. 



20, fig. 16. — Norwood and Pratten, Jour. Acad. Nat. Sci. Philadelphia, III, 



1854, p. 6. 

 Loc. Chester, Kaskaskia, and Fountain Bluff, Illinois; Stephensport, Kentucky. 



Productus giganteus (Martin). Upper Carboniferous. 



Anomites giganteus Martin, Petrefacta Derbiensia, 1809, p. 6, pi. 15, tig. 1. 

 Productus giganteus White, Proc. U. S. Nat. Mus., Ill, 1880, )). 46; — Twelfth Ann. 



Rep. U. S. Geol. Survey of the Terr., 1883, p. 132, pi. 36, fig. 1. 

 Loc. Europe; McCloud River, Shasta County, California. 



Productus gracilis A. Wiuchell. Waverly (L. Carb.). 



Productus gracilis A. Winchell, Proc. Acad. Nat. Sci. Philadelphia, 1865, p. 112. — 



Herrick, Bull. Denison Univ., Ill, 1888, p. 34, pi. 7, tig. 2. 

 Productus gracilis? A. "Winchell, Proc. American Philosophical Soc, XII, 1870, 



p. 250. 

 Loc. Near Cuyahoga Falls, Sciotoville, and Granville, Ohio. 



Productus gradatus Swallow. Keokuk (L. Carb.). 



Productus gradatus Swallow, Trans. St. Louis Acad. Sci., II, 1863, p. 93. 

 Loc. Keokuk, Iowa; Lewis and St. Louis counties, Missouri. 

 Ois. Keyes regards this species as identical with P. vittatus = P. alternatus. 



Productus granulosus Pliillips. Keokuk (L. Carb.). 



Productus granulosus Phillips, Geol. Yorkshire, II, 1836, p. 216, pi. 8, fig. 15. — Nor- 

 wood and Pratten, Jour. Acad. Nat. Sci. Philadelphia, III, 1854, p. 21. 

 Loc. Nauvoo, Illinois. 



Productus hepar Morton. Upper Carboniferous. 



Productus hepar Morton, American Jour. Sci., XXIX, 1836, p. 153, pi. 26, tig. 39. 

 Loc. Junior Furnace, Scioto County, Ohio. 

 Ohs. Not recognizable. 



Productus hildrethanus Norwood aud Pratten. Upper Carboniferous. 



Productus hildrethianns Norwood and Pratteu, Jour. Acad. Nat. Sci. Philadel- 

 phia, III, 1854, p. 18, pi. X, fig. 11. 

 Loc. Charbonicre, Missouri. 

 01)8. Keyes regards this form as a synonym for P. cora. 



Productus Wrsutiforme Walcott=Productella liirsutiforme. 

 Productus liirsutus Hall=Productella liirsuta. 

 Productus horridus (uon Sowerby) =Productus longispina. 



