scHLCHERT] INDEX AND BIISLIOGRAPHY. 217 



Dinorthis retrorsa (Salter) — Continued. 



ri.i'sioniys retrorsa Ihiil :mcl Chirko. I'al. Xow York, \'TII, T't. T. 1S92, i.j.. 197, 



•222, pi. 5A, firrs. 1 l-li;. 

 Loc. Enjjjland; Oxford, etc., ( Uiio ; ()t taw.i, ( ';iii:i(l;i. 



Dinorthis subquadrata (IJal]). Lorraine (Ord.). 



Ortbis sab(|naclrata Hall, I'al. New York, I, 1S47, ]). ll'd, ].l. 32A. i\g. 1;— Geol. 

 Wisconsin, I, 1862, p. ol, ligs. 1, 2.— Meek, Pal. Ohio, 1, 1873, p. 94, pi. 9, 

 fig. 2. — Miller, Cincinnati Qnart. Jonr. Sci., II, 187.5, p. 38. — White, .Second 

 Ann. Kep. Indiana Hiirean of Statistics and (>eol., 1880, p. 484, jd. 1, figs. 

 3-.5;— Tenth Pep. State Gecd. Indiana, 1881, p. 116, pi. 1, (igs. .3-5.— Shaler, 

 Foss. Pracliiopoda of the Ohio \'iilley, 1887, ]>. 22, ])1. 7. — Keyes, Geo]. Snr- 

 vey Missouri, V, 189.5, p. 00. 



fOrthis subquadrata Billings, Geol. Canada, 18G3, p. 1G5, fig. 14(1. 



Pla-sioniys snbiiuadrata Ilall iuid Clarke, Pal. New York, A'lII, Pt. I, 1892, pp. 

 lltl. UK), 222, pi. 5A, figs. 17-l!t. 



Ortbis (Dinorthis) subquadrata W'ini'heli and Scbnchert. Miiuiesota (ieol. .Sur- 

 vey, HI, 1893, p. 428, 1.1. :;2, ligs. 4!>-.5().— Whiteaves, Pal. I'oss.. Ill, Pt. Ill, 

 1897, p. 176. 



Loc. Ohio Valley; Spring Valley, Minnesota; Wilmington, Illiuois; Warren and 

 .Jefferson counties, Missouri ; Lattners. Iowa ; Iron Pidge, Wisconsin; Lake 

 Winnipeg, Canada; Anticosti. 



Discina of autliors (non Lamarck): — ^Orbicnloidea. 



Discina acadiea Hartt;---Parmoi)horella acadiea, a gastropod. 



Discina alleghania Hall=Orl)icnloidea allegliania. 



])iscina anipla Hallr^Orbiculoidca anipla. 



J)iscina capax White ^^Orbiculoidca capax. 



Discina capuliformis McCliesney=Orbiculoidea capuliforniis. 



Discina circe Billings— -Orbicnloidea lainellosa. 



Discina clara Spencer Schizotreta tcnuilamellata. 



Discina concordensis Sardeson^^-Schizotreta pelopea. 



Discina connata Walcott=Lingulodiscina connata. 



Disciim conradi Hall = ()rbiculoidea conradi. 



Discina convexa Sliuniard = Orbicnloidea convexa. 



Discina discus Hall=Orbiculoidea discus. . 



Discina doria Hall=Orbiculoidea doria. 



Discinn elniirn Hall = ()rbiculoidca elmira. 



Discina tbrbesi ]!^i;hols()n=rScliizotreta tenuilaniellata. 



Discina gallalieri Wincliell = (3rbiculoidea gallalieri. 



Discina grandis Yannxeni = K(iMncrella grandis. 



Discina grandis TIall = ()rl)i<'nl()idea anipla. 



Discina liuniilis Hall = ()rbiculoi(lea liumilis. 



?Discina inutilis Hall. Upper Cambrian. 



Discina inutilis Hall, Sixteenth Pep. Xew York State Cab. Nat. Hist.. 1863, p. 



130, pi. 6, fig. 11;— Trans. Albany Institute. V, 1867. p. 108. 

 Loc. Mazoniauie, Wisconsin. 

 Obs. Undeterminable. 



Discina illinoisensis ]\riller and (iurIey = Orbiculoidca illinoisensis. 

 Discina jervensis ljarret=Orbiculoidea jervisensis. 



