474 BULLETIN 92^ UNITED STATES NATIONAL MUSEUM. 



EDRIOASTER— Continued. 



Edrioaster Billings, Geol. Surv. Canada, dec. 3, 1858, p. 82.— Zittel, Ilandb, 

 Pal., 1, 1879, p. 414.— Sturtz, Neuea Jahrb. Min., Ceol. Pal., 2, 188C, p. 144.— 

 Miller, N. A, Geol. Pal., 1889, p. 242.— Jaekel, Stammes. d. Pclznat, 1, 

 Thecoidea u. Cyst., Berlin, 1899, p. 44. — Bat!:er, Treatise on Zool., pt. 3, 

 Echinoderma, London, 1900, p. 209, fig. 6.— Zittel, Crundzuge Pal., 1, 1910, 

 p. 181. 



Edriocystis Haeckel, Amph. und Cyst., Leipzig, 1896, p. 117. 



Edrioaster blgsbyi (Billings). 



Cyclaeter Bigsbyi Billings, Geol. Surv. Canada, Eep. Progr. for 1853-185G, 1857, 



p. 293. 

 Agelacrinites (Edrioaster) Bigsbyi Chapman, Expos. Min. Geol., Canada, 1864, 



p. 110. — Sladen, Quart. Jour. Geol. Soc., 35, 1879, p. 750. 

 Agelacrinus Bigsbyi Schmidt, Mem. Acad. St. Petersburg, 22, No. 11, 1874, 34. 

 Edriocystis Bigsbyi Haeckel, Amph. u. Cyst., 189G, p. 118, pi. 3, figs. 35, 36. 

 Edrioaster Bigsbyi Billings, Geol. Surv. Canada (Can. Org. Rem.), dec. 3, 1858, 



p. 85, pi. 8, figs. 1, la, 2, 2a. — Jaekel, Stammes. d. Pelmat., 1, Thecoidea u. 



Cyst., Berlin, 1899, p. 46, pi. 2, fig. 4.— Batliei, Treatise on Zool., pt. 3, 



Echinoderma, London, 1900, p. 209, fig. 6. — Springer, Mem. Geol. Surv. 



Canada, 15 P, 1911, p. 44 (loc. occ). 

 Trenton: Ottawa and Kirkfield, Ontario; High Bridge, Kentucky (Curdaville); 



Fillmore County, Minnesota (Prosser.). 



Edrioaster saratogensis Ruedemann. 



Edrioaster saratogensis Ruedemann, Bull. New York State Mus., 162, 1912, p. 



86, pi. 3, figs. 2-4. 

 Trenton (Snake Hill): Snake Hill, Saratoga County, New York. 



Edriocystis Haeckel. See Edrioaster Billings. 



EDRIOSPONGIA Ulrich and Everett. Genotype: E. basalis Ulrlch and Everett. 

 Edriospongia Ulrich and Everett in Miller, N. A. Geol. Pal., 1889, p. 159.— Uhich 

 and Everett, Geol. Surv. Illinois, 8, 1890, p. 271. 



Edriospongia basalis Ulrich and Everett. 



Edriospongia basalis Ulrich and Everett, Geol. Surv. Illinois, 8, 1890, p. 272, pi. 



C, figs. la-c. 

 Black River (Platte ville): Near Dixon, Illinois. 

 Sections of holatype.—C&t. No. 46556, U.S.N .M. 



EicHWALDiA of authors. See Dictyonella Hall. 



EICHWALDIA Billings. Genotype: E. subtrigonalis Billings. 



Eichwaldia Billings, Geol. Surv. Canada, Rep. Progr. for 1857, 1858, p. 190; 



Canadian Nat. Geol., 3, 1858, p. 442.— Schuchert, Bull. U. S. Geol. Surv., 



87, 1897, p. 81; Zittel-Eastman Textb. Pal., 1, 1900, p. 312; ibid., 2d ed. 1913, 



p. 396. 



Eichwaldia subtrigonalis Billings. 



Eichwaldia subtrigonalis Billings, Geol. Surv. Canada; Rep. Progr. for 1857, 



1858, p. 192, fig. 24; Canadian Nat. Geol., 3, 1858, p. 443, fig. 24; Geol. 



Canada, 1863, p. 142. fig. 76.— Hall and Clarke, Pal. New York, 8, pt. 2, 



1893, p. 310, figs. 241, 242; pi. 83, figs. 1-4. 

 Black River (Leray): Pauquette Rapids, Ottawa River, Canada. 



