2l() SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. Inuu.HV. 



DinortMs pectinella (Emmons) — Coiitiiuicd. 



1X5.S, p. 818, tig. G02.— Billings, Geol. C;in:ul:i, 1863, p. 1G5, fig. 147.— Hall, 

 Sceoud Ami Rep. New York State Geol., 1883, pi. 34, Hgs. 3!), 40. 



Ortliis peotiiuilla var. .seuiiovalis Hall, Pal. New York, 1, 1847, ]>. 121, ])1. Ii_'. lig. 

 11.— Miller, N. Amerieaii Geol. Pal.. 1889, p. 359. 



Ortbis cliarlotta' X. H. \\ incliell. Piglitli Re]*. (Jcol.Nat. Hist. Survey Minnesota, 



1880, p. G7. 



Dinortliis i)eetinella Hall and Clarke. Pal. New York, VTII, Pt. I. 1S92, pp. l!);"). 222, 



228, 1)1. 5, ligs. 27-33 

 Ortliis (Dinortbis) pectinella Wincliell and Selnicbert, Minnesota Geol. Survey, 



III, 1893, p. 424. pi. 32, ligs. 31-34.— Wbiteaves, Pal. Foss., Ill, Pt. Ill, 1897, 



p. 175. 

 Loc. Middleville, Trenton Falls, etc., New York; Pennsylvania; Mercer County, 



Kentucky; Ontario, Canada; Decorah, Iowa; St. Paul, Minneapolis, and 



Cannon Falls, Jlinnesota; Lake "Winnipeg, Canada. 



Dinorthis pectinella sweeneyi IST. H. AVincliell. Trenton (Ord.). 



Ortliis swecneyi N. H. Wincbell, Ninth Pcj). Geol. Nat. Hist. Survey Minnesota, 



1881, p. 117. 



Dinortbis sweeneyi Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, pp. 196, 



222, 228, pi. 5, ligs. 34-36. 

 Orthis (Dinortbis) pectinella var. sweeneyi Wincbell and Scbucbert, Minnesota 



Geol. Survey, III, 1893. p. 426, pi. 32, figs. 35-38. 

 Loc. St. Paul, Cannon Falls, etc., Minnesota; Decorab and McGregor, Iowa. 



Dinorthis platys (Billings). Cliazy (Ord.). 



Orthis phitys Hillings, Canadian Nat. Geol., IV, 1859, p. 438, lig. i:>;— (ieol. 

 (Janada, 1863, p. 129, lig. 54.— Hall and Clarke, Pal. New York. VIII, Pt. I, 

 1S92, p. 218. 

 Loc. Island of Montreal, Canada. 



Dinorthis porcata (McCoy). Trenton and Lorraine (Ord.). 



Orthis porcata McCoy, Silurian Foss. of Ireland, 1846, p'. 32, pi. 3, tig. 14. — Bil- 

 lings, Pal. Fossils, 1, 186.', p. 135, fig. Ill ;— Geol. Canada, 1863, p. 312, fig. 319. 



Ortbis anticostiensis Sbaler, Fossil Bracbiopoda of the Obio Valley, 1887, p. 19, 

 ])1. 6. ' ' 



PLrsiomys porcata Hall and Clarke, Pal. New York. VIII. Pt. 1, 1892, pp. 197, 222, 

 pi. 5A.figs. 20, 21. 



Lor. Ireland: Ottawa, Canada; Anticosti. 



Dinorthis proavita Wincliell and Scliucliert. Lorraine (Ord.), 



Orthis proavita Wim liell and Scbucbert, American Geol., IX, April 1, 1892, p. 290. 

 Ortbis petric Sardesou, Ihill. Minnesota Acad. Nat. Sci., Ill, April 9, 1892, p. .332, 



pi. 5, figs. 18-21. 

 Ortbis (Dinortbis) proavita Wincbell and Scbucbert, Minnesota Geol. Survey, 



HI, 1893, p. 431, 1)1. 32. ligs. 51-57.— ? Wbiteaves, Pal. Foss., Ill, Pt. Ill, 



1897, p. 176". 

 Lop. Spring Valley, Minnesota; Wilmington, Illinois; Lake Winnipeg, ('anada. 



Dinorthis retrorsa (Salter). Trenton and Lorraine (Ord.). 



Ortbis retrorsa Salter, Mem. Geol. Survey Great Britain, II, 1858, p. 373, pi. 27, 



figs. 3, 4.— Billings, PaL Fossils, I, 1862, p. 136, figs. 112, 113.— Meek, Pal. 



Obio, I, 1873. p. 92, pi. 11, fig. 7.— Miller, Cincinnati Quart. .lour. Sci., II. 



187.5, p. 37. 

 Ortliis carleyi Hall, Thirteenth Rep. New York State Cab. Nat. Hist., 1860, ]). 120, 



fig. in text;— Second Ann. Rep. New York State (ieol., 1883, pi. 34, figs. 28, 29. 

 Ortbis kenuicotti McCbesney, New Pal. Fossils, 1861, p. 78. 



