Armc LIST OK (, ENEMA AND SPEC1L>. 320 



Cyclocystoldes liuroiieiisis Billings. 



Cyclocystoides Huronensis Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 393, 



fig. 369. Raymond, Bull. Victoria Mem. Mus., 1, 1913, p. 29, pi. 3. fig. 2. 

 Richmond: Rabbit Island, Lake Huron. 



Oyclocystoides illinolsensis Miller and Gurley. 



Cyclocystoides illinoisonsis Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 



6, 1895, p. 61, pi. 5, figs. 27, 28. Savage, Bull. Geol. Surv. Illinois, 23, 1913, 



p. 40, pi. 1, fig. 2. 

 Upper Medinan (Girardean): Orchard Oreek, Alexander County, Illinois. 



Cyclocystoides magnus Miller and Dyer. 



Oyclocystoidee magnus Miller and Dyer, Jour. Cincinnati Soc. Nat, Hist., 1, 1878, 

 p. 32, pi. 2, figs. 8, 8a. Miller, Jour. Cincinnati Soc. Nat. Hist.. 4, 1881, p. 70, 

 pi. 1, figs. 2, 2a; N. A. Geol. Pal., 1889, p. 2:',7. 

 Cyclocystoides sp. (?C. magnus) Miller and Fabor, Jour. Cincinnati Soc. Nut. 



Hist., 15, 1892, p. 85, pi. 1, figs. 13-15. 



Richmond (\Vaynesville) : Near Morro\v and Waynesville, Ohio. 

 ?Maysville: Cincinnati, Ohio. 



;. Cat. No. 40733, U.S.N..M. 



Cyclocystoides minus Miller and Dyer. 



Cyclocystoides minus Miller and Dyer, Jour. Cincinnati Soc. Nat. Hist., 1, 1878, 



p. 33, pi. 2, fig. 5. 

 Richmond: Morrow, Ohio. 



Cyclocystoides mundulus Miller and Dyer. 



Cyclocystoides mundulus Miller and Dyer, Jour. Cincinnati Soc. Nat. Hist., 1, 



1878, p. 34, pi. 2, fig. 7. 

 Richmond: Morrow, Ohio. 



Cyclocystoides nitidus Faber. 



Cyclocystoides nitidus Faber, Jour. Cincinnati Soc. Nat. Hist., <), 1886, p. 17, pi. 1, 



fig. 1. 

 Maysvillo (Conyville): Near Transit, Ohio. 



Cyclocystoides parvus Miller and Dyer. 



< yd ocystoides parvus Miller and Dyer, Jour. Cinoinnaii Soc. Nat. Hist. .1, 1878, 



p. 33, pi. 2, fig. 6. 

 Richmond: Morrow, Ohio. 



Cyclocystoides salteri Hall. 



Cyclocystoides salteri Hall, 24th Rep. New York State Cab. Nat. Hist., 1872, p. 



218, pi. 6, fig. 16 (adv. sheets, 1871). Bather, Treatise on Zool., pt. 3, 



Echinodenna, London, 1900, p. 211, fig. 8. 

 Trenton: Near Saratoga, New York. 



CTCLOGNATHUS Linnarsson. Genotype: C. micropygus Linnarsson. 



< 'yclognathus Linnarsson, Geol. Foren. Stockholm Forh., 2, No. 12, 1875, p. 500. 



Brogger, Die sil. Etagen 2-3, Kristiania, 1882, p. 109. Zittel, Handb. d. Pal., 

 2, 1885, p. 596. Koken, Die Leitfossilien, Leipzig, 1896, p. 19. 



Cyclognathus rotundifrons Matthew. 



( 'yclognathus rotundifrons Matthew, Trans. Royal Soc. Canada, 10, sec. 4, 1893, 



p. 107, pi. 7, figs. 16a, b. 

 Canadian (Brctonian Div. C3d): St. John, Now Brunswick. 



