286 SYNOPSIS OF AMERICAN FOSSIL liBACHIOPODA. [ntLL.87. 



Orthis (?) eudocia Billinj-s. Calciferous (Ord.). 



Orthis eudocia Billiiifjs, Pal. Fossils, I, 1862, p. 83, tij;. 7(>. 

 Loc. Point Levis, Canada. 



Orthis (?) eurekaensis Walcott. Upper Cambrian. 



Ortliis eurekensis AValiiott, Mou. U. S. Geol. Survey, VIII. 1884, p. 22, pi. 9. fifr.8. 

 Protorthis? eurekensis Hall and Clarke, Pal. New York, VIII, Pt. I, 18!I2, p. 232. 

 Loc. Kuri'ka district, Nevada. 



Orthis euryone ]^illings. Calciferons (Ord.). 



Orthis euryone Billings, Pal. Fossils, I, 1802, p. 78, lig. 71.— Hall and Clarke, I'al. 

 New York, VIII, Pt. 1. 1892, pp. 221, 228, pi. 5, lig. 4. 



Orthis euryone? Matthew, Trans. Royal Soc Canada, 1893, p. 101, pi. 7, lig. 5. 



Loc. Point Levis, Canada; near St. .John, New Brunswick. 

 Orthis evadiie Bil]iuj;s=J)almaiielhi evadiie. 

 Orthis fasciata Hall=Orthostrophia fasciata. 

 Orthis fausta roerste=Hebertena lausta. 

 Orthis tissicosta Meek, aiid Miller =Plectorthis dichotoma. 

 Orthis fissicosta Hall=Plectorthis tissicosta. 



Orthis (?) fissiplica Roemer. Niagara (Sil.). 



Orthis lissiplica Roemer, Die silurische Fauna des west. Tennessee, 1860, p. 64, 



pi. 5, fig. 5. 

 Loc. Perry County, Tennessee. 



Orthis iiabella Hall=Orthis flabellites. 



Orthis flahellites Foerste. Clinton and Niagara (Sil.). 



Orthis llabellulum? Hall (nou Sowerby), Geol. N. Y. ; Rep. Fourth Dist., 1843, ]). 



105, fig. 5. 

 Orthis fiabellulum var. Hall, Pal. New York, II, 1852, pp. 254, 255. pi. 52, figs. 6, 7. 

 Orthis llabellulum Billings, Canadian Nat. Geol., I, 1856, p. 136, pi. 2, fig. 6. — 



Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Survey, 1889, p. 



38, pi. 34, fig. 30. 

 Orthis flabella Hall, Second Ann. Rep. N. Y. State Geol., 1883, pi. 34, figs. 41, 42; 



pi. 35, figs. 6-8.— Foerste, Bull. Denison Univ., I, 1885, p. 82, pi. 13, fig. 12. 

 Orthis calligramnia Foerste (non Dalman), Proc. Boston Soc. Nat. Hist., XXIV, 



1890, p. 308, pi. 6, figs. 4, 5. 

 Orthis fiabellites Foerste, Ibidem, 1890, p. 311.— Hall and Clarke, Pal. New York, 



VIII, Pt. I, 1892, pp. 221, 227, pi. .5, figs. 37-41; pi. 20, fig. 1. 

 Orthis (Dinorthis) calligranima Foerste, Geol. Ohio, VII, 1895, p. .570, i)l. 25, 



figs. 12a, 12b; pi. 31, figs. 4, 5: pi. 37A, fig. 20. 

 Loc. Lockport, Rochester, etc., New York; Dayton, Ohio; Osgood, Indiana; 



Louisville, Kentucky; Milwaukee, Wisconsin; Duudas, Ontario. 



Orthis flabellites spania Hall and Clarke. Niagara (Sil.). 



Orthis (labellites var. spania Hall and Clarke, Pal. New York, VIII, Pt. II, 



1895, pi. 84, figs. 10. 

 J.oc. Near Milwaukc-e, Wisconsin. 



Orthis liabellulum Hall (non Sowerby )= Orthis flabellites. 



Orthis (?) flava A. Winchell. Kinderhook (L. Carb.). 



Orthis liava A. Winchell, Proc. Acad. Nat. Sci. Philadelphia, 1865, p. 117. 

 Loc. Burlington, Iowa. 



Orthis futilis Sardeson—Dabnaiwlhi testudinaria futilis. 

 Orthis gemmicula l}illings=Orthidiuni gemniicula. 

 Orthis gil)bosa I>iIlings = Dalnianella sub;ii(iuata gibbosa. 

 Orthis goodwini Nettelroth=llhipidomella goodwini. 



