678 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



IsoTELUS HARRI8I Raymond (part). See leotelus platymarginatuB. 



Isotelus loweusis (Owen). 



Asaphus (Isotelus) iowenais Owen, Rep. Geol. Surv. Wisconsin, Iowa, Minnesota, 



1852, p. 577, tab. 2A, figs. 1-7. — Lesley, Geol. Siuv. Pennsylvania Rep., 



P 4, 1889, p. 41, figs. 

 Isotelus iowensia Clarke, Geol. Minnesota, 3 pt., 2, 1894, p. 704. — Slocom, Field 



Mus. Nat. Hist., Geol. Ser., 4, 1913, p. 48, pi. 13, figs. 1, 2.— Raymond, Bull. 



Mus. Comp. Zool., 58, 1914, p. 255, pi. 2, fig. G; pi. 3, figs. 1, 2. 

 Isotelus gigas ( larke (pail), Geol. Minnesota, 3, pt. 2, 1894, p. 703, fig. 5. — ^^VeIIer, 



Geol. Surv. New Jersey, Pal., 3, 1902, pi. 14, fig. 5. 

 Richmond (Macjuoketa): Turkey River, dermont, and Elgin, Iowa. 

 Cotypes.—C&i. No. 17906, U.S.N.M. 



I.sotelus Jacobus Clarke. 



Isotelus gigas Hall (part), Pal. New York, 1, 1847, pi. Gl, figs. 3g, 3b. 

 Isotelus jacobus Clarke, Geol. Minnesota, 3, pt. 2, 1894, p. 706, footnote. 

 Trenton: Middleville, New York. 



Isotelus latus Raymond. 



Isotelus latus RajTUond, Bull. Victoria Memorial Mus., 1, 1913, p. 45, pi. 5. 

 Asaphus platycephalus Billings, Geol. Canada, Geol. Surv. Canada, 18G3, p. 184, 



text fig. 183; Cat. Sil. Foss. Anticosti, 1866, p. 24, fig. 7; Quart. Jour. Geol. 



Soc. London, 20, 1870, p. 486, pis. 31, 32. 

 Isotelus gigas Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 293, fig. 1602. 

 Trenton: Ottawa, Ontario. 



Isotelus longJBVus Savage. 



Isotelu.s long8e^'^l^ Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 103, pi. 6 fig., 15. 

 Upper Medinan (Edgewood): Near Edgewood, Illinois. 



Isotelus maximus Locke. 



Isotelus maximus Locke, 2d Ann. Rep. Geol. Surv. Ohio, 1838, p. 246, figs. 8, 9; 

 Amer. Jour. Sci., 41, 1841, p. 161; Trans. Assoc. Amci. Geol. and Nat., 1843, p. 

 14.— Clarke, 10th Rep. State Geol. New York for 1890, 1891, ]>. 87; 44th Rep. 

 New York State Mus., 1892, p. Ill; Geol. Minnesota, 3, jit. 2, 1894, p. 701, 

 figs. 5-7; p. 706.— Ruedemann, Bull. New York State Mus., 49, 1901, p. 59, 

 pi. 4, fig. 1. — RajTnond and Narraway, Ann. Carnegie Mus., 7, 1910, p. 55, 

 fig. 3— Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 292, fig. 1603.— 

 Ctunings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 1060, pi. 55, 

 fig. 1. — Slocom, Field Mus. Nat. Ilist., Geol. Ser., 4, 1913, p. 47. — Raj-mond, 

 Bull. Victoria Memorial Mus., 1, 1913, p. 46, pi, 4, fig. 8; Bull. Mus. Comp. 

 Zool., 58, 1914, p. 257. 



Asaphus maximus Clarke, 46th Rep. New York Stat€ Mus., 1893, p. 195; 12th 

 Rep. State Geol. New York for 1892, 1894, p. 49. 



Asaphus (Isotelus) maximus Wliiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 3, 

 1897, p. 233. 



Isotelus mc^ifltoH Locke, .Vmei. Jour. Sci., 42, 18'12, ]>. 366, pi. 3, fig.; Trans. 

 Assoc. Amer. Geol., Nat., 1843, p. 221, pi. 6, fig. 1. — Anon., Amer. Jour. Sci., 

 2d ser., 6, 1848, p. 431.— Taylor, ibid., 10, 1850, p. 113. 



Asaphus megist OS Chapman, Canadian Jour., n. s., 4, 1859, pp. 140, 142. — Billings, 

 Geol. Canada, Geol. Surv. Canada, 1SG3, p. 184, fig. 182; Cat. Sil. Foss. An- 

 ticosti, Geol. Surv. Canada, 18G6, pp. 26, 60.— \Valcott, 28th Rep. New York 

 State Mus. Nat. Hi.st., doc. ed., 1877, p. 89; mus ed., 1879, p. 89.— Mickel- 

 borough, Jour. Cincinnati Soc. Nat. Hist., 6, 1883, pp. 200-206, figs. 1, 3 (2).— 



