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



Dignomia alveata Hall — Continued. 



Digiiomiu alveata Hall, Notes ou some New or Imperfectly Knowu Forms among 

 the Bracb., 1872, p. 2, pi. 13, fig. 3;— Twenty-third Rep. New York State 

 Cab. Nat. Hist., 1873, pi. 13, fig. 3.— Hall and Claike. Pal. New York, VIII, 

 Pt. I, 1892, p. 14, pi. 1, iigs. 24, 25.— Clarke. Thirteenth Ann. Rep. New York 

 State Geologist, 1895, p. 187, pi. 4, fig. 1. 



!,(>■. Canandaigiia Lake, etc., New York. 



DINOBOLUS Hall. Genotype Obolus conradi Hall. 



Diiiobolus Hall, Notes on some New or Imperfectly Known Forms among the 

 Bracb., (March) 1871, p. 4;— Ibidem, 1872, p. 4;— Twenty-third Rep. 

 New York State Cab. Nat. Hist., 1873, p. 247.— Hall and Whitfield, Pal. 

 Ohio, II, 1873, p. 130.— Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, 

 pp. 36,46, 164 ;— Eleventh Ann. Rep. New York State Geologist, 1894, p. 237. 



Obolellina Billings, Canadian Nat. Geol., VI (December) 1871, p. 222;— Ibidem, 

 VI, 1872, p. 326, figs. 1, 2;— American Jour. Sci., 3d ser.. Ill, 1872, p. 270. 



Conradia Hall (non Adams), Twenty-third Rejt. New York State Cab. Nat. Hist , 



1873, p. 250. — Davidson and King, C^uart. .Jonr. Geol. Soc. London, XXX, 



1874, p. 159. 



Diiiobolus canadaensis (Billings). Black Kiver and Trenton (Ord.). 



Obolius canadensis Billings, Canadian Nat. Geol., Ill, 1858, p. 441, \\^^. 20-23 (uou 

 fig. 19 = D. magnificus) ; — Geol. Survey Canada; Rep. Prog, for 1857, 1858, i>. 

 189, figs. 20-23 (non fig. 19) ;— Geol. Canada, 1863, p. 142, figs. 75. 



Obolellina canadensis Billings, Canadian Nat. Geol., VI, 1871, ]). 222; — Ibidem, 



1872, p. 326, fig. 15; fig. 6, p. 329. 



Dinobolus canadensis Davidson and King, C^uart. Jour. Geol. Soc. London, XXX, 



1874, p. 162, pi. 19, fig. 7. 

 Loc. Pautiuotte Rapids, etc., Canada. 



Dinobolus conradi Hall. Magara (Sil.). 



obolus conradi Hall, Twentieth Rep. New York State Cab. Nat. Hist., 1868, p. 



368, pi. 13, figs. 1, 2. 

 Obolus (Trimerellaf) conradi Meek and Worthen, Geol. Survey Illinois, III, 1868, 



p. 351, 1)1. 5, fig. 7. 

 Trimerella conradi Dall, American Jour. Conch., VII, 1871, p. 83. 

 Dinobolus conradi Hall, Twenty-third Rep. New York State Cab. Nat. Hist., 



1873, p. 247 (also extracts 1871, 1872). — Davidson and King, Quart. Jour. 

 Geol. Soc. London, XXX, 1874, p. 160, pi. 18, figs. 1-5.— Hall and Whitfield, 

 Pal. Ohio, II, 1875, p. 130, pi. 7, figs. 3, 4.— Hall and Clarke, Pal. New York, 

 VIII, Pt. I, 1892, p. 38, pi. 4B, figs. 13-24. 



TjOC. Port Byron, Illinois; Leclaire, Iowa; Racine and Grafton, Wisconsin; 

 Ciawford, Ohio; England; Gotland. 



Diuobolus magnificus (Billings). Black Eiver-Trenton (Ord.). 



( )li()lu8 canadensis Billings (partira), Geol. Surv. Canada, Rep. Prog, for 1857, 1858, 



].. 189, fig. 19 (non 20-23) ;— Canadian Nat. Geol., Ill, 1858, p. 441, fig. 19 (non 



figs. 20-23 = D. canadensis). 



Obolellina magnificus Billings, Ibidem, n. ser., VI, 1872, p. 329, fig. 7. 



Dinobolus niaguiticus Davidson and King, Quart. .lour. Geol. Soc. London, XXX, 



1874, ]). 164, pi. 19, fig. 8.— Nicholson, Pal. Prov. Ontario, 1875, p. 17, fig. 6. 

 l.oc. Pauciuettc Rapids, etc., Canada. 



Dinobolusf?) parvus Whitlield. Galena (Ord.). 



Diniibolusf parvus Whitfield, Geol. Wisconsin, IV, 1882, p. 347, pi. 27, figs. 



8-10.— Winchell and Schuchert, Minnesota Geol. Survey, III, 1893, p. 356, 



fig. 27.— Whiteaves, Pal. Foss., Ill, I't. Ill, 1897, p. 166. 

 Loc. Whitewater, Wisconsin; Wykofi, Minnesota; Lake Winnipeg, Canada. 



