598 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Helicotoma trltonla Billings. 



Helicotoma Tritonia Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 247. 

 Canadian (Quebec G): Cape Norman, Newfoundland. 



Helicotoma umbllicata Ulrich and Scofield. 



Helicotoma umbilicata Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 



1034, pi. 62, fig. 68; pi. 74, figs. 25-27. 

 Black River (Platteville) : Minneapolis and St. Paul, Minnesota; Beloit, Mineral 



Point, etc., Wisconsin; Dixon, etc., Illinois. 

 Cotypes.C&t. Nos. 45834, 45835, U.S.N.M. 



HELICOTOMA UNIANGULATA Salter. See Ophileta uniangulata. 



Helicotoma uniangulata (Hall). 



Euomphalus uniangulatus Hall, Pal. New York, 1, 1847, p. 9, pi. 13, figs. 1, la. 

 Straparollus uniangulatus Emmons, Amer. Geology, 1, pt. 2, 1855, p. 157. 

 Helicotoma uniangulata Salter, Geol. Surv. Canada, dec. 1, 1859, p. 13 (gen. ref.). 

 Ozarkian (Little Falls): Saratoga County, New York. 



HELICOTOMA VAGRANS Raymond. See Eccyliopterus vagrans. 



Helicotoma verticalis Ulrich. 



Helicotoma verticalis Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 1035, pi. 62, fig. 



69; pi. 74, figs. 18, 19. 



Black River (Lowville): High Bridge, Kentucky. 

 Holotype.Czt. No. 45836, U.S.N.M. 



Helicotoma whiteavesiana Raymond. 



Helicotoma whiteavesiana Raymond, Ann. Carnegie Mus., 4, 1908, p. 204, pi. 



48, figs. 11, 12. 

 Stones River (Pamelia): Aylmer, Quebec, and Hog Back, near Ottawa, Ontario. 



HELIOLITES Guettard. Genotype: H. interstinctus Linnaeus. 



Heliolites Guettard, Mem. 3, 1770, p. 454. Dana, Wilkes' U. S. Expl. Exped., 7, 

 Zoophytes, 1840, pp. 430, 541. Edwards and Haime, Compt. Rend. 1'Acad. 

 Sci., 29, 1849, p. 262; Mon. d. Polyp. Foss. d. Terr. Pal. (Arch, du Mus. 

 d'Hist. Nat., 5), 1850, pp. 149, 212. Hall, Pal. New York, 2, 1852, p. 130. 

 Pictet, Traite de Pal., 2d ed., 4, 1857, p. 438. Milne-Edwards, Hist. Nat. d. 

 Corall., 3, 1860, p. 234. Rominger, Geol. Surv. Michigan, 3, pt. 2, 1876, 

 p. 10. Nicholson, Trans. Royal Soc. Edinburgh, 27, 1876, pp. 247-248. 

 Lindstrom, Ann. Mag. Nat. Hist., 4th ser., 18, 1876, p. 13. Zittel, Handb. 

 Pal., 1, 1879, p. 212. Nicholson, Tab. Corals Pal. Period, 1879, p. 243. 

 Nicholson and Etheridge, Mon. Sil. Foss. Girvan Dist., 1880, p. 241. 

 Roemer, Leth. Geog., pt. 1, Leth. Pal., 1883, p. 503. Koch, Palaeonto- 

 graphica, 29, 1883, pp. 333, 343. Miller, N. A. Geol. Pal., 1889, p. 191. 

 James, Jour. Cincinnati Soc. Nat. Hist., 15, pt. 4, 1893, p. 152. Koken, Die 

 Leitfossilien, Leipzig, 1896, p. 314. Sardeson, Neues Jahrb. f. Min., Geol. 

 Pal., Beilage-Band, 10, 1896, pp. 252, 263. Lambe, Cont. Can. Pal., Geol. 

 Surv. Canada, 4, pt. 1, 1909, p. 79. Lindstrom, Kongl. Sven. Vet.-Akad. 

 Handl., 32, no. 1, 1909, pp. 35, 38. Kiaer, Palaeontographica, 46, 1899, p. 

 39; Zittel-Eastman, Pal., 1, 1900, p. 108. Grabau, Bull. New York State 

 Mus., 45, 1901, p. 144; Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 144. Pocta, 

 Syst. Sil. du Centre Boheme, 8, pt. 2, 1902, p. 280. Kiaer, Vid-Selsk. Skrifter, 

 Math.-naturw., 10, 1903, pp. 42, 56. Grabau and Shimer, N. A. Index 

 Fossils, 1, 1906, p. 97; Zittel-Eastman, Textb. Pal., 2d ed., 1913, p. 112. 



HELIOLITES AFFINIS Billings. See Lyellia afiims (Billings). 



