294 SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. |bull.87. 



Orthis (?) trinucleus Hall. Clinton (Sil.). 



Ortliis tiiinuleuM Hall, Pal. New York, II, 1852, p. 58, pi. 20, lig. S. 

 Loc. Wayne County, Now York. 



Ortbis triplicatella Meek=Plectorthis triplicatella. 



Orthis (?) tritonia IJillings. Oalciferous (Ord.). 



Orthis tritonia Billings, Pal. Fossils, I, 1862, p. 76, lig. 69;— Geol. Canada, 1868, 



p. 231, tig. 241.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 217, 



pi. 7A, figs. 12, 13. 

 Loc. Point Levis, Canada. 



Orthis tubulostriata Hall=Rhipidomella tiilmlistiiata. 



Orthis tulliensis Yaniixem=Schizophoria tullieusis. 



Orthis uberis Billings=Rhipidouiella uberis, 



Orthis iimbouata Conrad =Amboc(jelia umbouata. 



Orthis umbraculum Owen (non voii Buch)=Derbya robusta, 



Orthis umbraculum Hall, 1852, iSTewberry, 1861=Orthothetes umbrae-^ 



ulum. 

 Orthis unguiculus Hall, 1843 (non Phillips) =Amboccelia gregaria. 

 Orthis unguiformis Castelnau, and Emmons=Hipparionyx i>roximus. 

 Orthis vanuxemi Hall=Rhipidomella vanuxemi. 



Orthis vanuxemi pulchella Herrick=Rhipidomella vanuxemi pulchella. 

 Orthis varica Conrad =Bilobites various. 



Orthis vespertilio Sowerby. Ordovician. 



Orthis vespertilio (Sowerby) Kayser, Palteontographica, Snppl., Ill, 1876, p. 27, 



pi. 3, figs. 22, 23. 

 Loc. Europe; Potrero de los Angulos, etc., Argentine Republic. 



Orthis whittieldi N. H. Winchell=Plectorthis whitfleldi, 



Orthisina d'Orbigny=Clitambonites. 



Orthisina alberta Walcott=Billingsella alberta. 



Orthisina alternata Hall=:Orthothetes cheinungensis perversus. 



Orthisina americana Whitfield =01itambonites diversus. 



Orthisina arctostriata Hall=Orthotlietes chemuugensis arctistriatus. 



Orthisina crassa Meek and Hayden=Derbya crassa. 



Orthisina diversa Shaler=Clitambonites diversus. 



Orthisina festiuata Billings=BiIliugsella festinata. 



Orthisina grandaeva Billings =Billingsella grandteva. 



Orthisina missouriensis Swallow =Meekella stria ticostata. 



Orthisina transversa Walcott=BillingselIa transversa. 



Orthisina verneuili Billings =Clitambonites diversus. 



ORTHORHYNCHULA Hall and C. Genotype Orthis ( ?) linneyi James. 

 Orthorhynchula Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 181;— Thir- 

 teenth Ann. Rep. N. Y. State Geologist, 1895, p. 824. 



Orthorhynchula linneyi (James). Lorraine (Ord.). 



Orthis (?) linneyi James, The Paleontologist, 5, 1881, p. 41. 



Orthis linneyi Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Survey, 



1889, p. 41, pi. 34, figs. 7-18; errata, p. 1. 

 Orthorhynchula linneyi Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 



181, pi. 56, figs. 10-13, 19. 

 Loc. Near Danville, etc., Kentucky; Cincinnati, Ohio; Nashville, Tennessee. 



