1304 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Trochonema (Eimema) strigillatum — Continued. 



Trochonema (Eunema) strigillatum Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 



1052 (gen. ref.). 

 Black River: Pauquette's Rapids, Ottawa River (Leray), near Watertown, New 

 York; (?)Lower Fort Garry, Manitoba. 



Trochonema subcrassum Ulrich and Scofield. 



Trochonema subcrassum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 



1051, pi. 77, figs. 30-34. 

 Trenton: Mercer and Boyle Counties, Kentucky (Flanagan); near Cannon Falls, 



Minnesota (Prosser). 

 Cotypes.— Cat. No. 46039, U.S.N.M. 



Trochonema tricarinatum Billings. 



Trochonema tricarinata Billings, Canadian Nat. Geol., 4, 1859, p. 356. 

 Canadian (Romaine): Mingan Islands, Canada. 



Trochonema (Eunema) trilineatuni (Hall). 



Eunema? trilineata Hall, 20th Rep. New York State Cab. Hist., 1868, p. 346, 



pi. 15 (6), fig. 3; rev. ed., 1870, p. 397, pi. 15, fig.3. 

 Niagaran (Racine): Racine, Wisconsin. 



Trochonema umbilicatum (Hall). 



Pleurotomaria umbilicata Hall, Pal. New York, 1, 1847, p. 43, pi. 10, figs. 9a-h; 

 p. 175, pi. 38, figs, la-g— Emmons, Amer. Geology, 1, pt. 2, 1855, p. 160, 161, 

 pi. 5, figs. 4a, b. — Billings, Canadian Nat. Geol., 1, 1856, p. 42, figs. 4, 5.— 

 Chapman, Canadian Jour., n. s., 7, 1862, p. 121, fig. 124; Expos. Min. Geol. 

 Canada, 1864, p. 124, fig'. 124.— Nicholson, Rep. Pal. Prov. Ontario, pt. 2, 

 1875, p. 19, fig. 7e. 



Trochonema umbilicata Salter, Geol. Surv. Canada, Can. Org. Rem., dec. 1, 



1859, p. 27, pi. 6, fig. 3. — Billings [in Hind, Narrative Canadian Red River 

 Expl., Expd. of 1857 and Assinniboine and Saskatchewan Exped. of 1858, 2, 



1860, p. 287; Geol. Canada, Geol. Surv. Canada, 1863, p. 145, text fig. 92; p. 

 180, text fig. 172; Cat. Sil. Foss., Anticosti, Geol. Surv. Canada, 1866, p. 17 

 (loc. ref.).— Meek and Worthen, Geol. Surv. Illinois, 3, 1868, p. 314, pi. 3, figs. 

 5a, b— Miller, N. A. Geol. Pal., 1889, p. 429, fig. 719— Lesley, Geol. Surv. 

 Pennsylvania, Rep. P4, 1890, p. 1231, figs. — Whiteaves, Canadian Rec. Sci., 

 5, 1893, p. 323 (loc. occ.).— Keyes, Missouri Geol. Surv., 5, 1894, p. 155.— 

 Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 124 (loc. occ); 

 ibid., pt. 3, 1897, p. 198.— Ulrich and Schofield, Geol. Minnesota, 3, pt. 2, 1897, 

 p.1047, pi. 77, figs. 1-8.— Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 167.— 

 Ruedemann, Bull. New York State Mus., 49, 1901, p. 35. — Grabau and Shi- 

 nier, N. A. Index Fossils, 1, 1909, p. 669, fig. 926. 



Black River and Trenton: Watertown, Middleville, Trenton Falls, etc., New 



York; Canada; Kentucky; Tennessee; Illinois; Minnesota; Iowa; etc. 

 Plesiotypes — Cat. Nos. 46040-46042, U.S.N.M. 



Trochonema umbilicatum canadense Ulrich. 



Trochonema umbilicatum var. canadensis Ulrich, Geol. Minnesota, 3, pt. 2, 1897, 



p. 1048, pi. 77, figs. 4-6. 

 Black River (Leray) : Pauquettes Rapids, Ottawa River, Canada. 

 Holotype — Cat. No. 46043, U.S.N.M. 



Trochonema umbilicatum latum Ulrich. 



Trochonema umbilicatum var. latum Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 



1048, pi. 7 # 7, figs. 7, 8. 

 Stones River (Lebanon) : Middle Tennessee. 

 Holotype— Cat. No. 46044, U.S.N.M. 



