292 SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. [bull. 87. 



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



Orthis rui(l;i Billings, Cat.ilojjuc Silurian Fossils of Anticosti, 1866, p. 42. 

 Loc. Anticosti. 



Orthis (?) saiFordi Hall and (Uarke. Trenton (Orel.)- 



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



pi. 5A, figs. 38-10. 

 Loc. " East Tennessee " 



Orthis (?) salemensis Walcott. Lower Cambrian. 



Orthis salemensis Walcott, American Jour. Sol., 3d ser., XXXIV, 1887, p. 190, pi. 



1, tig. 17;— Tenth Ann. Rep. U. S. (Jeol. Survey, 1891, p. 612, pi. 72, fig. 6. 

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



Orthis saltensis Kayser. Upper Cambrian. 



Orthis saltensis Kayser, Pala-outographica, Snppl., Ill, 1876, p. 8, pi. 1, fig. 16. 

 Loc. Province Salta and Jujuy, Argentine Republic. 



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



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

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

 Loc. Red Wing, Minnesota. 



Orthis schohariensis Casteluau = Stroi)lionella schohariensis. 



Orthis scovilli Miller=Hebertella scovilli. 



Orthis sectostriata Ulrich=Plectorthis sectistriata. 



Orthis semele Hall=Rhipidomella semele. 



Orthis sinuata Hall=Hebertella siuuata. 



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



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

 Loc. Anticosti. 



Orthis solitaria Hall=Bhipidomella solitaria. 



Ortliis stonensis Saftbrd = Dalmaiiella stoneusis. 



Orthis striatocostata Geinitz=Meekella striaticostata. 



Orthis striatula Emmons (uon Schlotheini) = Dalmauella testudinaria. 



Orthis striatula ofauthors = Schi/ophoria striatula. 



Orthis strophomenoides Hall=Orthostrophia stroijhomenoides. 



Orthis subjequata Conrad=DahnauellasubiTiquata, 



Orthis subcarinata Hall=Dalmanella subcarinata. 



Orthis subcircula Simi)son = Rhipidoniella subcircnlus. 



Orthis subelliptica White and Whitlield=Khipidomella subelliptica. 



Orthis subjugata Hall = Hebertella occidentalis. 



Orthis (?) subnodosa Hall. Niagara (Sil.). 



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



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



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



Mem., Kentucky Geol. Survey, 1889, p. 44. 



Loc. Waldron, Indiana; Louisville, Kentucky. 



Orthis- suborbicularis Hall=Khipidomella suborbicularis. 

 Orthis sobquadrata Hall^Uinorthis subquadrata. 

 Orthis subumbona Hall=Martiuia subumbona. 



