14 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Actlnoceras richardsoni Continued. 



2a, b. Woodward, Man. Mollusca, pt. 2, 1851, p. 88, footnote, fig. 47. 

 Barrande, Neues Jahrb. f. Min., "etc., 1855, p. 396, pi. 6, figs. 6, 7; Bull. 

 Soc. Geol. France, 2d ser., 12, 1855, p. 461, pi. B, figs. 6, 7. Foord, Cat. Foss. 

 Ceph. Brit. Mue., pt. 1, 1888, p. 172. Miller, N. A. Geol. Pal., 1889, p. 431, 

 text fig. 725. Whiteaves, Trans. Royal Soc. Canada, 9, sec. 4, p. 83, pi. 9, 

 figs. 1, 2, 2a, 3, 4a; Pal. Foss., Geol. Surv. Canada, 3, pt. 3, 1897, p. 207. 



Orthoceras richardsoni Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1874, p. 

 737, pi. 234. 



?0rmoceras Brongniarti Owen, Geol. Rep. Wisconsin, Iowa, Minnesota, 1852, p. 

 181. 



Actinoceras Lyoni Whiteaves (not Stokes), Geol. Surv. Canada, Rep. Progr. 

 1878-79, 1880, pp. 460, and 48c of Appendix 1. 



Black River or Richmond : Lake Winnipeg, Canada. 



Actinoceras richardsoni magnum Parks. 



Actinoceras richardsoni var. magnum Parks in Tyrrell, 22nd Rep. Ontario Bur. 



Mines, 1913, p. 33. 

 Mohawkian or Richmond: Shamattawa River, Manitoba. 



Actinoceras rotulatum (Billings). 



Orthoceras rotulatum Billings, Geol. Surv. Canada, Rep. Progr. for 1853-1856, 

 1857, p. 334. Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1874, p. 732, 

 pi. 437, figs. 1-5. 

 Niagaran: Head of Lake Temiscaming, Canada. 



Observation. Considered synonymous with A, backi (Stokes) by Foord (Cat. 

 Foss. Ceph. British Mus., 1, 1888, p. 182). 



Actinoceras sedgwicki (Billings). 



Orthoceras Sedgwicki Billings, Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, 

 p. 320; Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 1866, pp. 22, 58 (loc. ref.). 

 Richmond and Gamachian: West End, Gamachi Bay, etc., Anticosti. 



Actinoceras sphseroidale (Stokes). 



Huronia sphaeroidalis Stokes, Trans. Geol. Soc. London, 2d ser., 1, pt. 2, 1824, 



p. 203, pi. 28, fig. 5. 

 Orthoceras (Huronia) sphaeroidale Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 



1874, p. 742, pi. 232, fig. 3. 



Actinoceras sphaeroidale Foord, Cat. Foss. Ceph. British Mus., 1, 1888, p. 186. 

 Niagaran: Drummond Island, Lake Huron. 



Actinoceras tenuifllum (Hall). 



Onnoceras tenuifilum Hall, Pal. New York, 1, 1847, p. 222, pi. 58, figs. 2a-c; p. 

 55, pi. 15, figs, la-c; pi. 16, figs, la-e; pi. 17, figs, la, b. Saemann, Paleonto- 

 graphica, 3, 1852, p. 142. Barrande, Neues Jahrb. f. Min., etc., 1855, p. 398, 

 405. Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, p. 72. Chap- 

 man, Canadian Jour., n. s., 8, 1863, p. 20, fig. 129, p. 198, fig. 171; Expos. 

 Min. Geol. Canada, 1864, p. 128, fig. 129, p. 170, fig. 171. Chamberlin, 

 Geol. Wisconsin, 1, 1883, p. 158, fig. Lesley, Geol. Surv. Pennsylvania 

 Rep. P. 4, 1889, p. 504, fig. 



Hormoceras tenuifilum Clarke and Ruedemann, Bull. New York State Mus., 65, 

 1903, p. 602 (gen. ref.) 



Actinoceras tenuifilum D'Orbigny, Prod. Pal., 1, 1849, p. 3 (gen. ref.). Emmons, 

 Amer. Geology, 1, pt. 2, 1855, p. 151. Grabau and Shimer, N. A. Index 

 Fossils, 2, 1910, p. 115, fig. 1351, 



