400 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Dendrograptus fruticosus Hall. 



Dendrograptus fruticosus Hall, Geol. Surv. Canada, dec. 2, 1865, p. 131, pi. 17, 



figs. 8, 9. 

 Canadian (Levis, Didymograptus dentatus zone): Point Levis, Quebec. 



Dendrograptus gracilis Hall. 



Dendrograptus gracilis Hall, Geol. Sui-v. Canada, dec. 2, 1865, p. 132, pi. 18, 



figs. 5-6; 20tli Rep. New York State Cab. Nat. Hist., 1868, p. 199, pi. 4, fig. 



11; rev. ed., 1870, p. 230, pi. 4, fig. 11; p. 224. 

 Canadian (Levis, Didymograptus zone): Point Levis, Quebec. 



Dendrograptxis cf. GRACixis Ruedemann. See Dendrograptus flexuosus. 



Dendrograptus gracilis var. crassa James. See Buthotrephis gracilis crassa. 



Dendrograptus (Psilophyton) gracillimus Walcott. See Mastigograptus gracil- 

 Umus. 



Dendrograptus gracillimus var. intermedia James. See Buthotrephia gracilis 

 intermedia. 



Dendrograptus linearis Carrutbers. See Pleurograptus linearis. 



Dendrograptus novellu^s Hall. See Chaunograptus novellus. 



Dendrograptus ontarioensis Bassler. 



Dendrograptus ontarioensis Bassler, Bull. U. S. Nat. Mus., 65, 1909, pp. 12, 13, 



pi. 1, fig. 4, fig. 12. 

 Niagaran dolomite: Hamilton, Ontario. 



Dendrograptus phainotheca Gurley. 



Dendrograptus phainotbeca (Giu-ley MS.) Bassler, Bull. U. S. Nat. Mus., 65, 



1909, pp. 11, 12, pi. 2, fig. 2; fig. IL 

 Niagaran dolomite: Hamilton, Ontario. 



Dendrograptus praegracilis Spencer. 



Dendrograptus prsegracilis Spencer, Canadian Nat., 10, 1882, p. 165 (nom. nud.); 



Trans. Acad. Sci. St. Louis, 4, 1884, p. 569, pi. 1, fig. 7; Bull. Mus. Univ. 



State Missouri, 1, 1884, p. 19, pi. 1, fig. 7.— Gurley, Jour. Geol., 4, 1896, pp. 



95-308.— Bassler, Bull. U. S. Nat. Mus., 65, 1909, p. 9, pi. 2, fig. 3, text 



figs. 4, 10. 

 Niagaran dolomite: Hamilton, Ontario. 



Dendrograptus? problematicus (Spencer). 



Inocaulis(?) problematica Spencer, Canadian Nat., n. s., 8, 1878, p. 458; ibid., 



10, 1882, p. 165; Bull. Mus. Univ. State Missoiui, 1, 1884, pp. 14, 36, pi. 5, 



fig. 3; Trans. Acad. Sci. St. Louis, 4, 1884, p. 564, pi. 5, fig. 3.— Gurley, 



Jour. Geol., 4, 1896, pp. 99, 309. 

 Dendrograptus? problematicus Bassler, Bull. U. S. Nat. Mus., 65, 1909, p. 10, 



pi. 1, figs. 1,2, text fig. 6. 

 Dendrograptus sp. Grant, Jour. Proc. Hamilton Assoc, 16, 1900, p. 102, fig. 

 Niagaran dolomite: Hamilton, Ontario. 



Dendrograptus ramosus Spencer. 



Dendrograptus ramosus Spencer, Canadian Nat., 10, 1882, p. 165 (nom. nud.); 



Trans. Acad. Sci. St. Louis, 4, 1884, p. 667, pi. 1, fig. 3; Bull. Mus. Univ. 



State Missom-i, 1, 1884, pp. 14, 17, pi. 1, fig. 3, 3a.— hurley. Jour. Geol. 4, 



1896, pp. 95, 308.— Bassler, Bull. U. S. Nat. Mus., 65, 1909, p. 8, pi. 1, fig. 3; 



text figs. 3, 9. 

 Niagaran dolomite: Hamilton, Ontario. 



