992 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Platystrophia crassa (James). 



Orthis (Platystrophia) dentata?? Meek (not Pander), Pal. Ohio, 1, 1873, p. 117, 



pi. 10, fig. 3. 

 Orthis dentata Miller, Cincinnati Quart. Jour. Scl, 1875, p. 27, 2. 

 Orthis (Platystrophia) biforata dentata Lesley, Geol. Surv. Pennsylvania, Rep. 



P4, 1889, p. 508, figs. 

 Orthis costata Miller (not Pander), Cincinnati Quart. Jour. Sci., 2, 1875, p. 33. 

 Platystrophia costata Cumings and Mauck, Amer. Jour. Sci., 4th ser., 14, 1902, p. 



14, footnote.— Cumings, ibid., 15, 1903, p. 38; p. 122, figs. 26, 27; 32d Ann. 



Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 914, pi. 35, figs. 6, 6a. 

 Orthis centrosa Miller, N. A. Geol. Pal., 1889, p. 356. 



Orthis (Platystrophia) crassa James, Cincinnati Quart. Jour. Sci., 1, 1874, p. 20. 

 Platystrophia biforata var. crassa Winchell and Schuchert, Geol. Minnesota, 3, 



1893, p. 458, pi. 33, figs. 55, 56— Whiteaves, Pal. Foss., 3, pt. 3, Geol. Surv. 



Canada, 1897, p. 178. 

 Platystrophia crassa Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 223 — 



Grabau and Shimer, N. A. Index Fossils 1, 1907, p. 258, figs. 308a-b. — Foerste, 



Bull. Sci. Lab. Denison Univ., 16, 1910, p. 59, pi. 4, figs. 5a, b. 

 Maysville (Fairmount-Corryville): Cincinnati, Ohio, and vicinity. 



Platystrophia cypha (James). 



Orthis (Platystrophia) cypha James, Cincinnati Quart. Jour. Sci., 1, 1874, p. 20. 



Platystrophia cypha Cumings, Amer. Jour. Sci., 4th ser., 15, 1903, p. 39, foot- 

 note. — Foerste, Amer. Geol., 31, 1903, p. 341; Bull. Sci. Lab. Denison Univ., 

 16, 1910, p. 61, pi. 4, fig. lOa-b; pi. 5, fig. 11; pi. 4, fig. 12; Ohio Nat., 12, 

 1912, p. 453, pi. 22, fig. 5. 



Platystrophia lynx var. cypha Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. 

 Indiana, 1908, p. 917. 



Maysville (Bellevue and Corryville): Warren County, etc., Ohio; Madison, Vevay, 

 etc., Indiana. 



Platystrophia cypha conradi Foerste. 



Platystrophia cypha conradi Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, 



pi. 4, fig. 7; Ohio Nat., 12, 1912, p. 453, pi. 22, fig. 3. 

 Platystrophia cypha var. Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, pi. 3, 



fig. 5. 

 Richmond (Arnheim): Near Smith ville and Summit, Kentucky. 



Platystrophia cypha versailleseusis Foerste. 



Platystrophia cypha versaillesensis Foerste, Bull. Sci. Lab. Denison Univ., 16, 



1910, pi. 4, fig. 11, 13. 

 Richmond: Versailles, Indiana (Liberty); north of Hogan Creek, Indiana 

 (Waynesville). 



Platystrophia daytonensis (Foerste). 



Orthis biforata var. lynx forma daytonensis Foerste, Bull. Sci. Lab. Denison 

 Univ., 1, 1885, p. 81, pi. 13, figs. 1-8. 



Orthis (Platystrophia) biforata (part) Foerste, Geol. Surv. Ohio, 7, 1895, p. 579, 

 pi. 25, fig. 8. 



Platystrophia daytonensis Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 76, pi. 4, 

 fig. 8. 



Upper Medinan: Dayton, Ohio; Hanover, Indiana; Cumberland Gap, Tennes- 

 see; Collinsville, Alabama (Brassfield); near Edgewood and Louisiana, 

 Missouri; Thebes, Illinois (Edgewood). 



Platystrophia flabella Hall. See Orthis flabellites. 



