BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 679 



Isotelus maxim us Continued. 



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



k!62, figs. 1-3. Ford and Dwight, Amer. 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., 4th 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.C&t. No. 33458, U.S.N.M. (Mickelborough). 



Observation. The above citations, like those of I. gigas, probably refer to 

 several species. 



Isotelus megalops Green. 



Isotelus megalops Green, Mon. Tril. N. Amer., 1832, p. 70, cast No. 25. 



Trenton: Near Trenton Falls, New York. 

 Plastotype.Ca,t. No. 25694, U.S.N.M. 



ISOTELUS MEGISTOS Locke. See Isotelus maximus. 

 ISOTELUS OBTUSA Raymond. See Onchometopus obtusus. 

 ISOTELUS PLANUS DeKay. See Isotelus gigas. 

 ISOTELUS PLATYCEPHALUS Bronn. See Isotelus gigas. 



Isotelus platymarginatus Raymond. 



Isotelus harrisi (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.E Clarke. See Onchometopus susse. 

 ISOTRYPA AMBIGUA Ulrich. See Loculipora ambigua. 



JAEKELOCYSTIS 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. 

 Holotype.C&t. No. 35056, U. S.N.M. 



Jaekelocystis hartley! Schuchert. 



Jaekelocystis hartley! 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, U.S.N.M. 





