BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 489 



Eoorthis atava (Matthew). 



Strophomena atava Matthew, Trans. Roy. Soc. Canada, 1st ser., 1893, 10, sec. 

 4, pp. 102-103, pi. 7, fig. 8a-f. Moberg and Segerberg, Medd. fran. Lunds 

 Geol. Faltklubb, ser. B., No. 2, 1906. 



Rafinesquina? atava Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 338. 



Orthis (Plectorthis) atava Walcott, Proc. U. S. Nat. Mus., 28, 1905, pp. 259-260. 



Eoorthis atava Walcott, Mon. U. S. Geol. Surv., 51, pt. 1, 1912, p. 774, pi. 95, figs. 

 7, 7a-b. 



Canadian (Bretonian Div. C 3a): Navy Island, St. John Harbor, New Bruns- 

 wick. 



Eoorthis desmopleura (Meek). 



Orthis coloradoensis Meek (not Shumard), Proc. American Phil. Soc., 2, 1870, 



p. 425. 



Orthis desmopleura Meek, Hayden's U. S. Geol. Surv. Wyoming, 1872, p. 295. 

 Orthis (Plectorthis) desmopleura Walcott, Proc. U. S. Nat. Mus., 28, 1905, p. 261. 

 Eoorthis desmopleura Walcott, Mon. U. S. Geol. Surv., 1912, 51, p. 777, pi. 96, 



figs. 1, la-r. 



Upper Cambrian: Utah, New Mexico, Pennsylvania, etc. 

 Lower Ordovician: Glen Eyre, Queens Canyon, near Manitou, and Colorado 



Springs, Colorado. 

 Holotype and plesiotypes.C&t. Nos. 7859, 52317, 52320, U.S.N.M. 



Eoorthis desmopleura nympha Walcott. 



Orthis (Plectorthis) desmopleura nympha Walcott, Proc. U. S. Nat. Mus., 28, 



1905, p. 262. 

 Eoorthis desmopleura nympha Walcott, Mon. U. S. Geol. Surv., 51, 1912, p. 778, 



pi. 96, fig. 2, 

 Lower Ordovician: Williams Canyon, Manitou, Colorado; also Upper Cambrian of 



Wyoming. 

 Holotype Cat. No. 52333, U.S.N.M. 



Eoorthis johannensis (Matthew). 



Orthisina(?) johannensis Matthew, Trans. Roy. Soc. Canada, 1st ser., 9, sec. 4, 



1892, pp. 49-50, pi. 12, figs. 13a-c. 



Clitambonites? johannensis Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 184. 

 Orthis (Plectorthis) johannensis Walcott, Proc. U. S. Nat. Mus., 28, 1905, pp. 



265, 266. 

 Eoorthis johannensis Walcott, Mon. U. S. Geol. Surv., 51, pt. 1, 1912, p. 781, pi. 



97, figs. 10, lOa. 

 Canadian (Bretonian Div. C 3a): Germaine Street, St. John, New Brunswick. 



Eoorthis (Orusla) lenticularis (Wahlenberg). 



Anomites lenticularis Wahlenberg, Nova Acta Regiae Soc. Sci. Upsal., 8, Petrif. 



tell. Svecanae, 1821, pp. 66, 67. 

 Orthis lenticularis Davidson, British Foss. Brachiopoda, 3, pt. 7, 1869, pp. 230-232, 



pi. 33, figs. 22-28 Roemer, Leth. geog., pt. 1, Leth. Pal., Atlas, 1876, pi. 2, 



figs. 4a-c. Matthew, Trans. Roy. Soc. Canada, 9, sec. 4, 1892, pp. 46-48, pi. 



12, figs. 9a-d; Geol. Surv. Canada, Rep. Cambrian Rocks Cape Breton, 1903, 



pp. 213-116, pi. 17, figs. la-d. 



Orthis (Orusia) lenticularis Walcott, Proc. U. S. Nat. Mus., 28, 1905, pp. 273-276. 

 Orusia lenticularis Walcott, Mon. U. S. Geol. Surv., 51, pt. 1, 1912, p. 98, figs. 1, 



la-p; 2, 2a-k; 3, 3a-b; 6, 6a-c. (See for complete bibliography.) 

 Orthis lenticularis strophomenoides Matthew, Trans. Roy. Soc. Canada, 9, sec. 4, 



1892, p. 49, pi. 12, figs. 12-b; Geol. Surv. Canada, Rep. Cambrian Rocks Cape 



Breton, 1903, p. 217, pi. 17, figs. 4a-b. 



