1002 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Plectorthis (Austinella) kankakensis — Continued. 



Plectorthis kankakensia Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 221, 



pi. 5, figs. 24, 25. 

 Austinella kankakensis Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 224 



(gen. ref.). 

 Richmond (Fernvale): Wilmington, Illinois. 



Plectorthis neglecta (James). 



Orthis neglecta James, Paleontologist, 4, 1879, p. 26. 



Plectorthis dichotoma Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 221, pi. 5, 



fig. 21. 

 Plectorthis neglecta Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, p. 52, pi. 6, 



figs. la-e. 

 Maysville (Mount Hope): Cincinnati, Ohio, and vicinity. 

 Observation. — See Plectorthis dichotoma for a possible synonym. 



Plectorthis (Eridorthis) nicklesi Foerste. See Hebertella (Eridorthis) nicklesi. 



Plectorthis plicatella (Hall). 



Orthis plicatella Hall, Pal. New York, 1, 1847, p. 122, pi. 32, fig. 9.— Billings(?), 

 Geol. Canada, 1863, p. 165, fig. 145.— Meek, Pal. Ohio, 1, 1873, p. 108, pi. 8, 

 fig. 7. — Miller, Cincinnati Quart. Jour. Sci., 2, 1875, p. 30. — Emmons, Amer. 

 Geology, 1, pt. 2, 1855, p. 193, pi. 9, figs. 9a, b — Shaler, Mem. Geol. Surv. 

 Kentucky, 1, 1876, p. 34.— Chamberlin, Geol. Wisconsin, 1, 1883, p. 155 — 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 530, figs. 



Orthis (Plectorthis) plicatella Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 156. 



Plectorthis plicatella Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 221, pi. 5, 

 figs. 18-20.— Ruedemann, Bull. New York State Mus., 49, 1901, p. 25.— 

 Raymond, Bull. Amer. Pal., 3, 1902, p. 304, pi. 19, figs. 5, 6.— Weller, Geol. 

 Surv. New Jersey, Pal., 3, 1903, p. 152, pi. 9, figs. 22-24; p. 216, pi. 16, fig. 

 6.— Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 252, fig. 301d-f.— 

 Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 925, pi. 36, 

 figs. 3-3f — Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, p. 49, pi. 6, 

 fig. 5a-b. 



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

 Observation. — Some of the above citations may include the Trenton variety of 



the species. 



Plectorthis plicatella trentonensis Foerste. 



Orthis (Plectorthis) plicatella Winchell and Schuchert, Geol. Minnesota, 3, 1893, 



p. 436, pi. 33, figs. 5-7. 

 Plectorthis plicatella var. trentonensis Foerste, Bull. Sci. Lab. Denison Univ., 16, 



1910, p. 49. 

 T r enton (Prosser): Kenyon, etc., Minnesota. 



Plectorthis plicatella var. triplicatella Cumings. See Plectorthis fissicosta 

 triplicatella. 



Plectorthis (Eridorthis) rogersensis Foerste. See Hebertella (Eridorthis) 

 rogersensis. 



Plectorthis (Austinella) scovillei (Miller). 



Orthis scovilli Miller, Jour. Cincinnati Soc. Nat. Hist., 5, 1882, p. 40, pi. 1, fig. 5. 

 Hebertella scovilli Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 222. 

 Dinorthis scovillei Foerste, Amer. Geol., 31, 1903, p. 340. 

 Austinella scovillei Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 224; 



17, 1912, p. 130, pi. 8, figs. 8a-c. 

 Kichmond (Waynesville): Oregonia, Ohio. 



