144 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Buthotrephis antiquata Hall. 



Buthotrephis antiquata Hall, Pal. New York, 1, 1847, p. 8, pi. 2, fig. 6.— Goeppert, 

 Nov. Act. Acad. Caes. Leop. Car., 22, Suppl. (Uebergangsgeb.), 1852, p. 85. — 

 Quenstedt, Handb. Petrefaktenk. Tubingen, 3d ed., 1885, p. 1081, fig. 402.— 

 Lesley, Rep. Geol. Surv. Pennsylvania, P 4, 1889, p. 98, fig. 



Chazyan: Chazy, New York. 



Buthotrephis? ctespitosa Hall. 



Buthotrephis? csespitosa Hall, 3d Rep. New York State Cab. Nat. Hist., rev. 



ed., 1850, p. 178, pi. 1, fig. la-c (doc. ed., p. 170). 

 Trenton: Near Watertown, New York. 



Buthotrephis clavelloides (Grabau). 



Bythotrephis clavelloides Grabau, Michigan Geol. Surv., Geol. Ser., 1, 1909, p. 

 210, pi. 12, fig. 1. 

 Cayugan (Akron): North Buffalo, New York. 



Buthotrephis divaricata WTiite. 



Buthotrephis divaricata David White, Proc. U. S. Nat. Mus., 24, 1902, p! 265, 

 pi. 16. 



Cayugan (Kokomo): Kokomo, Indiana. 



Buthotrephis filiciformis James. See Chlcephycus filiciformis. 



Buthotrephis gracilis Hall (1847). See Buthotrephis tenuis. 



Buthotrephis gracilis (Hall). 



Fucoides gracilis Hall, Nat. Hist. New York, Geol., 4, 1843, p. 69, fig. 

 Buthotrephis gracilis Hall (not Hall, 1847), Pal. New York, 2, 1852, p. 18, pi. 5, 



figs, la-d.— Rogers, Geol. Pennsylvania, 2, 1858, p. 822, fig. 625. — Nicholson 



and Hinde, Canadian Joiir., n. s., 14, 1874, p. 137.— Etheridge, Quart. Jour. 



Geol. Soc. London, 34, 1878, p. 574. — Lesquereux, 13th Ann. Rep. Indiana 



Geol. Surv., 1883, p. 30, pi. 1, figs. 1, 6, 7.— James, Jour. Cincinnati Soc. Nat. 



Hist., 7, 1885, p. 160, pi. 9, fig. 6.— Lesley, Rep. Geol. Surv. Pennsylvania, 



P. 4, 1889, pp. 99, 100, figs. 

 Bythotrephis gracilis Schimper, Pal. Veg., 1, 1869, p. 198.— Grabau, Bull. New 



York State Mus., 45, 1901, pp. 130, 131, fig. 25; Bull. Buffalo Soc. Nat. Sci., 



7, 1901, p. 130, 131, fig. 25. 

 Buthotrephis Hallii Humphreys, Bull. Torrey Botanical Club, 37, 1910, p. 309. 

 Lithodendron dichotomum Eaton, Geol. Textb., 2d ed., 1882, p. 39, pi. 4, fig. 43.— 



Clarke, 11th Rep. State Geol. New York, 1894, p. 34.— 45th Rep. New York 



State Mus., 1894, p. 350. 

 Clinton: New Hartford, New York. This species has been identified in the 



Silurian at numerous American localities. 



Buthotrephis gracilis crassa Hall. 



Buthotrephis gracilis var. crassa Hall, Pal. New York, 2, 1852, p. 19, pi. 5, fig. 



3a-d; 11th Ann. Rep. Indiana Dep. Geol. Nat. Hist., 1882, p. 221, pi. 1, fig. 



6.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 101, fig. 

 Dendrograptus gracilis var. crassa James, Jour. Cincinnati Soc. Nat. Hist, 7, 1885, 



p. 159. 

 Silurian: Oneida County, etc., New York (Clinton); Waldron, Indiana (Waldron); 



Ontario (Cataract), etc. 



Buthotrephis gracilis intermedia Hall. 



Buthotrephis gracilis var. intermedia Hall, Pal. New York, 2, 1852, p. 19, pi. 5, 

 fig. 2a, b. 



