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



Obolella polita Hull — Continued. 



Obololla polita Whitlielil, roweH's Gcol. Geoj^^r. Survey Rocky Mountain R(fj;ion, 

 1880, p. 339, pi. 2, i1<,'s. 12, 13.— Walcott, Bull. U. S. (;eol. Survey, 30, 1886, 

 p. 111.— Hall and Clarke, Pal. New York, VITT, Pt. I, 1892, ])1. 2, ligs. 37-41. 



Lor. Trempealeau, Wisconsin; Black Hills, South Dakota. 



Obolella pretiosa Billings=Limiarssonia pretiosa. 



Obolella i)rinia Wliittield=Lingulei)is prima. 



Obolella transversa Hartt=Linuarssouia transversa. 



Obok'llina Billings =Dinobolus. 



Obolellina canadensis Billings = l)inobolus canadaensis. 



Obolellina galtensis Billings = It liiuoboliis galtensis. 



Obolellina magnifica Billings=Dinobolus magnificus. 



OBOLTJS Eicbwald. Genotype Obolus appolimis Eichwald. 



Obolus Eichwald, Zoologia Specialis, I, 1829, p. 274. — Hall and Clarke, Pal. New 

 York, A^III, Pt. I, 1892, p. 80, tigs. 33, 34 ; pp. 164, 337.— Matthew, Trans. Royal 

 Soc. Canada, IX, 1892, p. 43. — Mickwitz, M6m. I'Acad. Imp. Sci. St. P6ter8- 

 bourg, VIII, 1896, pp. 25, 126. 



Euobolus Mickwitz, M6m. I'Acad. Imp. Sci. St. Pctersbourg, VIII, 1896, pp. 25, 

 129, 133. 



Ubs. Both Euobolus and Obolus are based ujion the same species. 



Obolus appolinus Oweu (non Eichwald) =Obolella polita. 

 Obolus canadensis Billings, 1858=Dinobolus magnificus. 

 Obolus canadensis Billings=Dinobolus canadaensis. 

 Obolus conradi nall=Dinobolus conradi. 

 Obolus galtensis Billings=Rhinobolus galtensis. 

 Obolus labradoricus Billings =Iphidea labradorica. 



Obolus (?) major Matthew. Lower Cambrian. 



Obolus? major Matthew, Trans. Royal Soc. Canada, IV, 1890^ p. 155, pl. 8, tig. 3. 

 Mickwitzia (?) major Mickwitz, M6m. I'Acad. Imp. Sci. St. P6ter8bourg, VIII, 



1896, p. 23. 

 J.oc. Near St. .John, New Brunswick. 



Obolus (?) murrayi Billings. Cambrian. 



Obolus? murrayi Billings, Pal. Fossils, I, 1865, p. 362. 

 Loc. Hare Bay, Newfoundland. 



Obolus ? pectenoides Whittield=Obolella j)ectinoides. 



Obolus pulcher Matthew=Botsfordia pulchra. 



Obolus pristinus Matthew. ? Middle Cambrian. 



Oltolus jiristinus Matthew, Trans. N. Y. Acad. Sci., XIV, 1895, p. 121, pl. 4, tig. 1. 

 Loc. Ilaiilord Brook, New Brunswick. 



Obolus (?) refulgens Matthew. Middle Cambrian. 



Obolus refulgens Matthew, Trans. Royal Soc. Canada, IX, 1892, p. 44, pl. 12, 



figs. 6a-6d. 

 Obolus (?) refulgens Mickwitz, M6ni. I'Acad. Imp. Sci. St. lYtersbourg, VIII, 1896, 



p. 23. 

 Loc. Near St. John, New Brunswick. 

 O^^hlertella TIall and Clarke=Lingulodiscina. 

 Orbicula Cuvier= Crania. 

 Orbicula Sowerby, 1830=Discina. 

 Orbicula cailata Hall=Lingulella calata. 



