BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 575 



Gyronema leptonotum (Raymond). 



Eunema leptonotum Raymond, Amer. Jour. Sci., 4th ser., 20, 1905, p. 378. 

 Gyronema leptonotum Raymond, Ann. Carnegie Mus., 4, 1908, p. 209, pi. 55, 



fig. 15. 

 Chazyan (Day Point): Chazy, New York. 



Gyronema liratum Ulrich and Scofield. 



Gyronema liratum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 1056, 



pi. 78, fig. 14-16. 

 Trochonema (Gyronema) liratum Grabau, Amer. Nat., 36, 1902, p. 925. 

 Black River (Platteville) : Beloit, Wisconsin. 

 Holotype— Cat. No. 45824, U.S.N.M. 



Gyronema microclathratum (Hudson). 



Holopea microclathrata Hudson, Bull. New York State Mus., 80, 1905, p. 294, 



pi. 4, figs. 3, 4. 

 Gyronema microclathratum Raymond, Ann. Carnegie Mus., 4, 1908, p. 210. 

 Chazyan (Valcour): Valcour Island, New York. 



Gyronema percarinatum (Hall). 



Pleurotomaria percarinata Hall, Pal. New York, 1, 1847, p. 177, pi. 38, fig. 4; 12th 



Rept. New York State Cab. Nat. Hist., 1855, p. 74. — Emmona, Amer. Geol., 1, 



pt. 2, 1855, p. 160, pi. 5, fig. 7. 

 Cyclonema percarinata Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 321. — 



WTiitfield, Geol. Wisconsin, 4, 1882, p. 211, pi. 5, fig. 15.— Chamberlin, Geol. 



Wisconsin, 1, 1883, p. 157, fig.^ — Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 



1889, p. 172, fig. 

 Trenton: Middleville, New York. 



Gyronema pulchellum Ulrich and Scofield. 



Gyronema pulchellum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 1054, 



pi. 78, figs 19-21. 

 Trochonema (Gyronema) pulchellum Grabau and Shinier, N. A. Index Fossils, 1, 



1909, p. 671, fig. 928e, f. 

 Black River: Minneapolis, Chatfield, etc., Minnesota (Decorah); Mercer County, 



Kentucky. 

 Cotypes.— Cat. No. 45825, U.S.N.M. 



Gyronema? rotallneum Raymond. 



Gyronema? rotalineum Raymond, Ann. Carnegie Mus., 3, 1906, p. 577; ibid., 4, 



1908, p. 210, pi. 54, fig. 4. 

 Chazyan (Crown Point): Sloop Bay, Valcour Island, New York. 



Gyronema semicarlnatum (Salter). 



Cyclonema semicarinata Salter, Geol. Surv. Canada, Can. Org. Rem., dec. 1, 



1859, p. 27, pi. 6, figs. 2, 2a (not 2b).— Billings, Geol. Canada, Geol. Surv. 



Canada, 1863, p. 145, fig. 90. — Sardeson, Bull. Minnesota Acad. Nat. Sci., 3, 



1892, p. 343. 

 Gyronema semicarinatum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 



1055, pi. 78, figs. 17, 18. 

 Black River: Allumette Island, Ottawa River, Canada (Leray); near Cannon 



Falls, Minnesota (Decorah). 

 Pledotypes. —Csit. No. 45826, U.S.N.M. 



