292 SYNOPSIS OF AMERICAN FOSSIL BKACHIOPODA, I bull. 87. 



Orthis (?) ruida Billings. Aiiticosti (Sil.). 



Ortbis ruida Iiillinj|s, Catiilogno Silurian Fossils of Anticosti, 1866, p. 42. 

 Loc. Anticosti. 



Orthis (?) saffordi Hall and Clarke. Trenton (Ord.). 



Orthis i saffordi, Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 218, 340, 



pi. HA, figs. 38-U). 

 Loc. " East Tennessee " 



Orthis (?) salemensis Walcott. Lower Cambriau. 



Orthis salemensis Walcott, American Jonr. Sci., 3d ser., XXXIV, 1887, p. 190, pi. 



1, fig. 17;— Tenth Ann. Kep. U. S. Geol. Survey, 1891, p. 612, pi. 72, fig. 6. 

 Loc. Washington County, Now York; near Quebec, Canada. 



Orthis saltensis Kayser, Upper Cambrian. 



Orthis saltensis Kayser, Paheontographica, Siipi)l., Ill, 1876, p. 8, pi. 1, lig. 16. 

 Loc. Province Salta and Jujuy, Argentine Republic. 



Orthis (??) sandbergeri N. H. Wiiichell. Upper Cambrian. 



Orthis sandbergeri N. H. Wincliell, Fourteenth Ann. Rep. Geol. Nat. Hist., Sur- 

 vey of Minnesota, 1886, p. 318, pi. 2, figs. 8, 9. 

 Loc. Red Wing, Minnesota. 



Orthis schohariensis Oasteluau=Stvoplioiiella schoharieusis. 



Orthis scovilli Miller=Hebertella scovilli. 



Orthis sectostriata Ulrich=Plectorthis sectistriata. 



Orthis semele Hall=Rhipidoniella semele. 



Orthis sinnata Hall=Hebertella sinuata. 



Orthis (?) sola Billings. Lorraine (Orel.). 



Orthis sola Billings, Catalogue Silurian Fossils of Anticosti, 1866, p. 12. 

 Loc. Anticosti. 



Orthis solitaria Hall=Bhipidomella solitaria. 



Ortliis stonensis Saftbrd = Dalmaiiella stouensis. 



Orthis striatocostata Geinitz=Meekella striaticostata. 



Orthis striatula Emmons (non Schlotheim) = Dalmauella testudiuaria. 



Orthis striatula of authors — Schizoplioria striatula. 



Orthis strophomenoides Hall=Orthostrophia strophontenoides. 



Orthis subfiequata Conrad=Dalniauellasubiequata. 



Orthis subcarinata Hall=Dalnianella subcarinata. 



Orthis subcircula Simpson =Rhipidomella subcirculus. 



Orthis subelliptica White and Whitfield— lihipidomella subelliptica. 



Orthis subjugata Hall=Hebertella occidentalis. 



Orthis (?) subnodosa Hall. l!fiagara (Sil.). 



Orthis subnodosa Hall, Descriptions of n. sp. Fossils from Waldron, Indiana, 1879, 

 p. 14;— Eleventh Rep. State Geol. Indiana, 1882, p. 286, pi. 27, fig. 17;— 

 Trans. Albany Institute, X, 1883, p. 70. — Nettelroth, Kentucky Fossil Shells, 

 Mem., Kentuckj' Geol. Survey, 1889, p. 44. 



Loc. Waldron, Indiana; Louisville, Kentucky. 



Orthis suborbicularis Hall=Rhipidomella suborbicularis. 

 Orthis subquadrata Hall=Dinorthis subquadrata. 

 Orthis subumboua Hall=Martinia subumboua. 



