BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 471 



ECHINUS AURANTIUM Wahlenberg. See Echinosphserites aurantium. 

 ECHINUS GYRACANTHUS Eaton. See Tentaculites gyracanthus. 



ECTENOCRINUS Miller. Genotype: Heterocrinus simplex Hall. 



Ectenocrinus Miller, N. A. Geol. Pal., 1889, p. 242. Bather, Ann. Mag. Nat. 

 Hist., 6th ser., 5, 1890, p. 324, pi. 14, fig. 7; pi. 15, fig. 7. Wachsmuth and 

 Springer, Proc. Acad. Nat. Sci. Philadelphia, 1890, pp. 380, 383, 385. 

 Bather, Kongl. Sv. Vet. Akad. Handl., 25, No. 2, 1893, p. 20; Treatise on 

 Zool., pt. 3, Echinodenna, London, 1900, p. 146, fig. 58, 3. Wachsmuth, 

 Zittel-Eastman Textb. Pal., 1, 1900, p. 152. Zittel, Grundzuge Pal., 1, 

 1910, p. 151 .Springer, Mem. Geol. Surv. Canada, 15 P, 1911, p. 27; Zittel- 

 Eastman Textb. Pal., 2d ed., 1913, p. 212. 



Ectenocrinus canadensis (Billings). 



Heterocrinus Canadensis Billings, Geol. Surv. Canada, Rep. Progr. for 1853-56, 



1857, p. 273; Geol. Surv. Canada, dec. 4, 1859, p. 48, pi. 4, figs. 5a-5d. 

 Ectenocrinus canadensis Miller, N. A. Geol. Pal., 1889, p. 242 (gen. ref.). 



Wood, Bull. U. S. Nat. Mus., 64, 1909, p. 22, pi. 4, fig. 10. 



Heterocrinites simplex Troost, Amer. Assoc. Adv. Sci., 1850, p. 60 (nom. nud.). 

 Trenton: Ottawa and Montreal, Canada; Frankfort, Kentucky. 

 Plesiotype.Cat. No. 39921, U.S.N.M. (Troost's type of H. simplex.) 



Ectenocrinus grandis (Meek). 



Heterocrinus simplex var. grandis Meek, Geol. Surv. Ohio, Pal., 1843, p. 9, pi. 



1, figs. 7a-c; Cincinnati Quart. Jour. Sci., 1, Jan., 1874, p. 13. 

 Ectenocrinus grandis Miller, N. A. Geol. Pal., 1889, p. 242, fig. 295. Foerste, 



Jour. Cincinnati Soc. Nat. Hist., 21, 1914, p. 124, pi. 1, figs. 8a-d. 

 Heterocrinus simplex Hall (not Hall, 1847), 24th Rep. New York State Cab. Nat. 



Hist., 1872, pi. 5, fig. 11, 12. 



Eden and Lower Maysville: Cincinnati, Ohio, and vicinity. 

 Trenton (Upper): Near Rogers Gap, Kentucky. 



Ectenocrinus simplex (Hall). 



Heterocrinus simplex Hall, Pal. New York, 1, 1847, p. 280, pi. 76, figs. 2a-d. 

 Billings, Geol. Surv. Canada, Rep. Prog., 1853-56, 1857, p. 271. Meek, 

 Geol. Surv. Ohio, Pal., 1, 1873, p. 7, pi. 1, figs. 4a, b, 5a, b. Dyche, Science, 

 20, 1892, p. 66; Jour. Cincinnati Soc. Nat. Hist., 15, 1892, p. 101. Grabau 

 and Shimer, N. A. Index Fossils, 2, 1910, p. 502, fig. 1814. 



Ectenocrinus simplex Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadel- 

 phia, 1880, p. 392, pi. 10, fig. 9. Miller, N. A. Geol. Pal., 1889, p. 242, fig. 

 296. Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 720, pi. 

 4, figs. 10, lOa. 



Ectenocrinus (Heterocrinus) simplex Wachsmuth and Springer, Proc. Acad. Nat. 

 Sci. Philadelphia, 42, 1890, p. 379. 



Eden and Lower Maysville: Cincinnati, Ohio, and vicinity. 



ECTOMARIA Koken. Genotype: Murchisonia nieszkowskii Schmidt. 



Eunema (part) of Salter, Billings, Bigsby and Miller. 

 Murchisonia (part) of Whitfield and other authors. 

 Solenospira Ulrich, Geol. Minnesota, 3, pt. 2, 1897, pp. 959, 1021. Grabau and 



Shimer, N. A. Index Fossils, 1, 1909, p. 635 (Genotype: Eunema pagoda 



Salter). 

 Ectomaria Koken, Bull. Acad. Imp. Sci. St. Petersburg, 5th ser., 7, No. 2, 1897, 



p. 201; Koken, Die Leitfossilien, 1896, p. 395; Neues Jahrb. fur Min., Geol. 



und Pal., 1, 1898, p. 21. Donald, Quart. Jour. Geol. Soc. London, 55, 1899, p. 



252. 



