812 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Modiolodon truncatus (Hall). 



Modiolopsis truncatus Hall, Pal. New York, 1, 1847, p. 296, pi. 81, figs. 3a, b. 

 Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 217. Hall and Whitfield, 

 Geol. Surv. Ohio, Pal. 2, 1875, p. 86, pi. 2, fig. 13. Lesley, Geol. Surv. Penn- 

 sylvania, Rep. P 4, 1889, p. 412, fig. 



Eurymya? truncata (changed to Modiolodon truncata on p. 628) Ulrich, Geol. 

 Minnesota, 3, pt. 2, 1894, p. 512 (gen. ref.). 



Modiolodon truncatus Ulrich, Geol. Surv. Ohio, 7, 1893, p. 656, pi. 51, figs. 9-10. 

 Cumings, 32d Ann. Rep. Dept. Geol. Nat. Res. Indiana, 1908, p. 1008, pi. 

 46, figs 6, 6a. 



Lyonsia subtruncata D'Orbigny, Prodr. Pal., 1, p. 11 (proposed for Modiolopsis 

 truncatus Hall, 1847; not M. truncata Agassiz, 1842). Emmons, Amer. 

 Geology, 1, pt. 2, 1855, p. 171, pi. 17, fig. 4. 



Cincinnatian: Near Rome, New York (Pulaski); Cincinnati, Ohio, and vicinity 

 (Fairmount-Corryville) . 



Plesiotypes.Vzt. Nos. 46238, 46239, U.S.N.M. 



Modiolodon winchelli (Safford). 



Cyrtodonta winchelli Safford, Geol. Tennessee, 1869, p. 287, pi. L (E), figs. 2a-i. 

 Modiolodon winchelli Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 521, fig. 40e-f. 

 Cypricardites winchelli Miller, N. A. Geol. Pal. 1889, p. 477 (gen. ref.). 

 Trenton (Hermitage): Wilson County, Tennessee. 

 Plesiotypes.Cat. No. 46240, U.S.N.M. 



MODIOLOPSIS (part) of authors. See Eurymya, Allodesrna, Modiolodon, and White- 

 avesia Ulcich. 



MODIOLOPSIS Hall. Genotype: Cypricardites modiolaris Conrad. 



Modiolopsis Hall, Pal. New York, 1, 1847, p. 157. McCoy, British Pal. Rocks 

 Foss., 1854, p. 265. Woodward, Man. Mollusca, pt. 2, 1854, p. 266. Pictet, 

 Traite" de Pal., 2d ed., 3, 1855, p. 533. Hall, Pal. New York, 3, 1859, p. 14, 

 269 and 270, footnote; 12th Rep. New York State Cab. Nat. Hist., 1859, p. 

 9. Hitchcock, Geol. Vermont, 1, 1862, p. 296. Salter, Cat. Camb. Sil. Foss., 

 1873, p. 65. Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 216. Zittel, 

 Handb. Pal., 2, 1881, p. 44. Barrande, Syst. Sil. du Centre Boheme, 6, 1881, 

 p. 107. Miller, N. A. Geol. Pal., 1889, p. 489. Barrois, Ann. Soc. Geol. du 

 Nord., 19, Lille, 1891, p. 206. Whidborne, Mon. Dev. Fauna South England, 

 1, Pal. Soc., 1892, p. 40. Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 502. 

 Koken, Die Leitfossilien, Leipzig, 1896, p. 191. Ball, Zittel-EastmanTextb. 

 Pal., 1, 1900, p. 385; ibid., 2d ed., 1913, p. 462 Grabau, Bull. Buffalo Soc. 

 Nat. Sci., 7, 1901, p. 209; Bull. New York State Mus., 45, 1901, p. 209. 

 Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 981. Grabau 

 and Shimer, N. A. Index Fossils, 1, 1909, p. 511. 



Modiolopsis adrastia Billings. 



Modiolopsis Adrastia Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 45. 



(Adv. sheets, 1862.) 

 Black River: St. Joseph's Island, Lake Huron. 



Modiolopsis afflnis Sardeson. 



Modiolopsis affinis Sardeson, Bull. Minnesota Acad. Nat. Sci., 4, 1896, p. 73, pi. 2, 



fig. 9. 

 St. Peter: South St. Paul, Minnesota. 



MODIOLOPSIS ALATA Ulrich. See Eurymya alata. 





