SCH0CHERT.] 



INDEX AND BIBLIOGRAPHY. 327 



Productus martini Sowerby=Productus seiuireticulatiis. 



Productus mesialis Hall. Keokuk (L. Carb.). 



Productus mesialis Hall, Geol. Survey Iowa, I, Pt. II, 1858, p. 636, pi. 19, tig. 2; — 



Second Aun. Rep. N. Y. State Geol., 1883, pi. 49, figs. 9, 10.— Hall and Clarke, 



Pal. New York, VIII, Pt. I, 1892, pi. 18, figs. 9, 10. 

 Loc. Keokuk, Iowa; Nauvoo, Illinois. 

 06s. Keyes regards this species as identical with P. burlingtonensis. 



Productus mesolobus Phillips. Carboniferous. 



Productus mesoloha Phillips, Geol. Yorkshire, II, 1836, p. 215, pi. 7, figs. 12, 13. 

 Productus mesolobus Etheridge, Quart. Jour. Geol. Soc. London, XXXIV, 1878, 



p. 630. 

 Loc. Europe; Feildeu Isthmus, lat. 82" 43'. 



Productus mexicoanus Shuniard. Upper Carboniferous. 



Productus mexicanus Shumard, Trans. St. Louis Acad. Sci., I, 1858, p. 291. — 



Kayser, Richthofeus China, IV, 1883, p. 182, pi. 28, fig. 7. 

 Productus mexicanus? White, Wheeler's Expl. and Survey west 100th Meridian, 



IV, 1875, p. 120, pi. 8, fig. 6. 



Loc. Guadalupe Mountains, New Mexico; Lincoln County, Nevada; Lo-Ping, 



China. 

 Productus morbillianus A. Winchell. Burlington (L. Carb.). 



Producta morbilliana A. Winchell, Proc. Acad. Nat. Sci. Philadelphia, 1865, 



p. 113. 

 Loc. Burlington, Iowa; Sciotoville, Ohio. 



Productus multistriatus Meek. Carboniferous. 



Productus multistriata Meek, Proc. Acad. Nat. Sci. Philadelphia, 1860, p. 309. 

 Productus uuiltistriatus Meek, Simpson's Rep. Expl. Great Basin Terr. Utah, 



1876, p. 350, pi. 1, fig. 8;— King's U. S. Geol. Expl. 40th Pari., IV, 1877, p. 76, 



pi. 8, fig. 3. 

 Loc. Utah and Nevada. 



Productus muricatus Norwood and Pratten. Upper Carboniferous. 



Productus muricatus Norwood and Pratten (non Phillips), Jour. Acad. Nat. Sci. 

 Philadelphia, III, 1854, p. 14, pi. 1, fig. 8.— White, Wheeler's Expl. and Sur- 

 vey west 100th Meridian, IV, 1875, p. 120, pi. 8, fig. 4.— Herrick, Bull. Denison 

 Univ., II, 1887, p. 49.— Keyes, Proc. Acad. Nat. Sci. Philadelphia, 1888, p. 228. 



Loc. Pike County, Illinois; near Richmond, Missouri; Des Moitues Valley, Iowa; 

 Flint Ridge, Ohio; Lake County, Colorado; northern New Mexico. 



Ohs. Since Phillips's P. muricatus is regarded as a synonym for P. costatus, there 

 is no need for another specific name for Norwood and Pratten species. 



Productus nanus Meek and Wortlien. Upper Carboniferous. 



Productus nanus Meek and Worthen, Proc. Acad. Nat. Sci. Philadelphia, 1860, 



p. 450 ;— Geol. Survey Illinois, II, 1866, p. 320, pi. 26, fig. 4.— Keyes, Proc. Acad. 



Nat. Sci. Philadelphia, 1888, p. 227. 

 Loc. Jefferson County, Iowa; northern New Mexico (White). 



Productus navicella Hall=Productella navicella. 



Productus nebraskaensis Owen. Upper Carboniferous. 



Productus nebrascensis Owen, Geol. Rep. Wisconsin, Iowa, and Minnesota, 1852, 



p. 584, pi. 5, fig. 3.— McChesney, Trans. Chicago Acad. Sci., I, 1868, p. 24, pL 



1, fig. 7.— Meek, Final Rep. U. S. Geol. Survey Nebraska, 1872, p. 165, pi. 2, 



fig. 2; pi. 4, fig. 6; pi. 5, fig. 11.— Meek aud Worthen, Geol. Survey Illinois, 



V, 1873, p. 569, pi. 25, fig. 8.— White, Wheeler's Expl. and Survey west 100th 

 Meridian, IV, 1875, p. 116, pi. 8, fig. 3.— Meek, King's U. S. Geol. Expl. 40th 

 Pari., IV, 1877, p. 65.— White, Thirteenth Rep. State Geol. Indiana, 1884, 

 p. 122, pi. 24, figs. 7-9.— Herrick, Bull. Denison Univ., II, 1887, p. 49, pi. 2, 



