646 BULLETIN 02, UNITED STATES NATIONAL MUSEUM. 



Hormotoma gracilis multlTolvis Ulrich and Scofield. 



Honnotoma gracilis var. multivolvis Ulrich and Scofield, Geol. Minnesota, 3, pt. 



2, 1897, p. 1015, pi. 70, figs. 26-29. 

 Richmond (Maquoketa): Spring Valley, Minnesota. 

 Cotypes.C&t. No. 45858, U.S.N.M. 



Hormotoma gracilis sublaxa Ulrich and Scofield. 



Hormotoma gracilis var. sublaxa Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 



1897, p. 1015, pi. 70, figs. 23-25. 



Black River (Auburn-Decorah): Auburn, Lincoln County, Missouri. 

 Cotypes Cat. No. 45859, U.S.N.M. 



Hormotoma Infrequens (Billings). 



Murchisonia infrequens Billings, Canadian Nat. Geol., 4, 1859, p. 457. 

 Hormotoma infrequens Raymond, Ann. Carnegie Mus., 4, 1908, p. 191, pi. 55, fig. 4. 

 Chazyan (Aylmer): Grand Isle, near Cornwall, Canada. 



Hormotoma latlanpcularis Branson. 



Hormotoma latiangularis Branson, Trans. Acad. Sci. St. Louis, 18, 1909, p. 44, 



pi. 7, figs. 11, 12. 

 Black River (Auburn-Decorah): Auburn, Lincoln County, Missouri. 



Hormotoma(?) major (Hall). 



Murchisonia major Hall, Geol. Lake Superior Land Dist., 2, 1851, p. 209, pi. 26, 



figs. la-c. Chamberlin, Geol. Wisconsin, 1, 1883, p. 167. Keyes, Missouri 



Geol. Surv., 5, 1894, p. 145, pi. 49, figs. 5a-b. 

 Hormotoma? major Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 1018, 



pi. 71, figs. 5-7. Grabau and Shimer, N. A. Index Fossils 1, 1909, p. 650, 



fig. 889. 

 Murchisonia bellicincta Owen, Rep. Geol. Surv. Wisconsin, Iowa, and Minnesota, 



1852, pi. 2, fig. 8. 

 Trenton (Prosser and Stewartville) : Western shore of Green Bay, etc., Wisconsin; 



Stewartville, Hader, etc., Minnesota; Iowa; Pike County, Missouri. 

 Plesiotype and plastotype.Gzt. Nos. 17903, 45860, U.S.N.M. 



Hormotoma melaniaformls (Shumard). 



Murchisonia melaniaformis Shumard, 1st and 2d Ann. Rep. Geol. Surv., Missouri, 



pt. 2, 1855, p. 208, pi. C, fig. 13. Keyes, Missouri Geol. Surv., 5, 1894, p. 145, 



pi. 49, fig. 3. 

 Hormotoma? melaniaformis Donald, Quart. Jour. Geol. Soc. London, 55, 1899, 



p. 262 (gen. ref.). 

 Canadian: Franklin County, Missouri. 



Hormotoma multivolvis (Billings). 



Murchisonia multivolvis Billings, Geol. Surv. Canada, Rep. Progr. for 1853-6, 



1857, p. 299; Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 1866, p. 18 (loc. 



ref.). 

 Richmond (English Head): Macasty Bay, Anticosti. 



Hormotoma obelisca (Whitfield). 



Murchisonia (Fusispira?) obelisca Whitfield, Bull. Amer. Mus. Nat. Hist., 1, 1886, 



p. 317, pi. 26, figs. 5, 6. 



Murchisonia obelisca Seely, Vermont State Geol., Rep. 7, 1910, pi. 60, fig. 5. 

 Canadian (Beekmantown): Fort Cassin, Vermont. 



