218 SYNOPSIS OF AMERICAN FOSSIL BRACIIIOPODA. [bull. 87. 



Disciiia keokuk (Tuiiey = Orbiculoi(lea keokiik. 



Disciiia lodeusis lliill=Oii)i(',ul(>ideii lodieiisis. 



Disciiia iiuignilica neriick = ()rbicul{)i(U'a inai;tiiti('a. 



Disciiia niaiiliat tell sis ]\[eek and Haydeii = (>rl)i(;ul()i(loa man liattaiiensis. 



Disciua inarj^iiialis Whittield = Oibicul()idea iiiarffiiialis. 



Disciiia media ]Iall=()rbicnlnidea lodieiisis media. 



Disciua meekaiia Wlutlield=()rbicnl()idea missourieusis. 



Disciiia microscopica Sliamard=Acrotreta microscopica. 



Disciua minuta nall = Oibiculoidea minuta. 



Disciua missourieusis Sliiimard=Orbicul()idea missourieusis. 



Disciua uiuuda ^liller and Gurley=Orbiculoidea muuda. 



Disciua ueglecta Hall=Orbiculoidea ueglecta. 



Disciua uewberryi Hall=Lingulodisciua uewberryi. 



Disciua uitida Meek and Wortlieu = ()rbiculoidea missourieusis. 



Disciua uitida =Orbiciiloidea uitida. 



Disciua patellaris Wiuchell=Orbiculoidea patellaris. 



Disciua pelopea Billiugs=Scliizotreta pelopea. 



DiseinaC?) pileolus Whiteaves. ? Lower Cretaceous. 



Disciua pileolus Whiteaves, Cont. Canadiau Pal., 1, 1889, p. 159, pi. 21, lig. 3. 



Loc. Riuk Rapids ou Lewis River, British America. 



Ohs. "Professor Hyatt thinks that the fossils from this locality are Jurassic'' 



(Stantou). 



Disciua pleurites Meek=Lingulodiscina pleurites. 

 Disciua raudalli Hall=Orbicnloidea raudalli. 

 Disciua saffordi Wiucliell=Orbiculoidea saffordi. 

 Disciua saiupsoui Miller =Orbiculoidea sampsoni. 



DiseinaC?) semipolita Whiteaves. Cretaceous. 



Discina semipolita Whiteaves, Mesozoic Fossils, I, Geol. Survey Cauada, 1884, 



p. 252, pi. 33, fig. 9. 

 Loc. Queen Charlotte Island. 



Disciua seiieca Hall=Orbiculoidea seucca. 



Disciua solitaria Eiugueberg=Schizotreta teuuilamellata. 



?Discina sublamellosa Ulricb. Lorraine (Ord.). 



Discina suhlamellosa Ulrich, Jour. Cincinnati, Soc. Nat. Hist., 1, 1878, p. 97, pi. 4, 



fig. 11.— Miller, N. American Geol. PaL, 1889, p. 344. 

 Loc. Covington, Keutucky. 

 Ohs. Probably not a brachiopod. 



Disciua subtrigonalis McChesuey =:Orbiculoidea siibtrigonalis. 

 Disciua teuuilamellata var. subplaua Hall=Orbiculoidea subplaua. 

 Disciua teuuiliueata IVEeek aud Haydeu=Orbiculoidea teuuiliueata. 

 Disciua teuuistriata Ulrich = Orbieuloidea teuuistriata. 

 Di.sciua trigoualis McChesuey=:Oibiculoidea subtrigonalis. 

 Disciua truucata Hall^Schizobolus couceutricus. 

 Disciua truucata Emiuous = ()rbiculoidea lamellosa. 

 Discina tullia Hall=Orbiculoidea tnllia. 

 Disciua utaheusis Meek=Orbiculoidea utaheusis. 



