BIBLIOGKAPHIC LIST OF GENEBA AND SPECIES. 679 



Isotelus maximus— Continued. 



Walcott, Science, 3, 1884, p. 280, fig. 1.— Woodward, Geol. Mag., 3, 1, 1884, p. 



162, figs. 1-3.— Ford and Dwight, Araer. Jour. Sci., 3d ser., 31, 1886, p. 254, 



pi. 7, fig. 16.— Miller, N. A. Geol. Pal., 1889, p. 531, fig. 968.— Beecher, Amer. 



Jour. Sci., 4tli ser., 13, 1902, p. 169, pi. 5, figs. 5, 6; Geol. Mag., dec. 4,, 9, 



1902, p. 158, figs. 5, 6.— Rowley, Missouri Bur. Geol. and Mines, 2d ser., 8, 1908, 



p. 58, pi. 15, fig. 3. 

 Asaphus (Isotelus) megistos Meek, Geol. Surv. Ohio, Pal., 1, 1873, p. 159, pi. 14, 



fig. 13.— Miller, Cincinnati Quart., Jour. Sci., 1, 1874, p. 137. 

 Trenton-Richmond : Cincinnati, Ohio. Many localities in the United States and 



Canada. 

 Plesiotype.— Cat. No. 33458, U.S.N.M. (Mickelborough) . 



Observation. — The above citations, like those of I. gigas, 7)ro])ably refer to 

 several species. 



Isotelus megalops Green. 



Isotelus raegalo])a Green, Mon. Tril. N. iVmer., 1832, ]>. 70, cast No. 25. 

 Trenton: Near Trenton Falls, New York. 

 Plastotype.—C&t. No. 25694, U.S.N.Ikl. 



Isotelus megistos Locke. See Isotelus maximus. 



Isotelus obtusa Rajonond. See Onchometopua obtusus. 



Isotelus planus DeKay . See Isotelus gigas. 



Isotelus platycephalus Bronn. See Isotelus gigas. 



Isotelus platymarginatus Raymond. 



Isotelus liarrisi (part) Raymond, Ann. Carnegie Mus., 3, 1905, pi. 12, fig. 4. 

 Isotelus platymaiginatus Raymond, Ann. Carnegie Mus., 7, 1910, p. 66, pi. 17, 



figs. 2-5; pi. 19, fig. 3; 7th Rep. Vermont State Geol., 1910, p. 225, pi. 34, 



fig. 4; pi. 37, figs. 2-5; pi. 39, fig. 3. 

 Chazyan (Crown Point, Valcour): Valcour Island, New York; Isle La Motte, 



Vermont. 



Isotelus stegops Green. See Isotelus gigas. 



Isotelus sus.b Clarke. See Onchometopus susse. 



IsoTRYPA ambioua UMch. See Loculipora ambigua. 



JAEKELOCTSTIS Schuchert. Genotype: J. hartley! Schuchert. 



Jaekelocystis Schuchert, Amer. Geol., 32, 1903, p. 230; Smiths. Misc. Coll., 47, 

 1904, p. 222. 



Jaekelocystis avellana Schuchert. 



Jaekelocystis avellana Schuchert, Smiths. Misc. Coll., 47, 1904, p. 226, pi. 37, 

 figs. 11, 12, fig. 28; :Maryland Geol. Surv., Low. Dev., p. 235, pi. 38, figs. 3, 4. 

 Helderbergian (Keyser): Keyser, West Virginia. 

 Eolotype.— Cat. No. 35056, U. S.N.M. 



Jaekelocystis hartley! Schuchert. 



Jaekelocystis hartleyi Schuchert, Amer, Geol., 32, 1903, p. 231; Smiths. Misc. 

 Coll., 47, pt. 2, 1904, p. 224, fig. 27, pi. 37, figs. 4-8.— Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 468, fig. 1776.— Schuchert, Maryland Geol. 

 Surv., Low. Dev., 1913, p. 233, pi. 37, figs. 12-16. 



Helderbergian (Keyser): Keyser, West Virginia. 



Cotypes.—Cat. No. 35055, IT. S.N.M. 



