610 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



HERMATOSTROMA Nicholson. Genotype: H. schluteri Nicholson. 



Hermatostroma Nicholson, Mon. British Strom., Pal., Soc., 1886, p. 105; ibid., 

 1892, pp. 218, 219. Parks, Univ. Toronto Studies, Geol. Ser., no. 4, 1907, p. 

 34. Zittel-Eastman Pal., 2d ed., 1913, p. 123. 



Hermatostroma guelphica Parks. 



Hermatostroma guelphica Parks, Univ. Toronto Studies, Geol. Series, no. 4, 1907, 



p. 34, pi. 4, figs. 1, 2; pi. 6, fig. 4, 3. 

 Niagaran (Guelph): Elora, Ontario. 



HERPETOCRINUS Salter. See Myelodactylus Hall. 

 HETEROCRINITES SIMPLEX Troost. See Ectenocrinus canadensis. 



HETEROCRINUS Hall. Genotype: H. heterodactylus Hall. 



Heterocrinus Hall, Pal. New York, 1, 1847, p. 278. D'Orbigny, Prodr. de Pal., 

 1, 1849, p. 24. Emmons, Amer. Geology, 1, pt. 2, 1855, p. 223. Billings, 

 Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, p. 271. Pictet, Traite de 

 Pal., 2d ed., 4, 1857, p. 329. Billings, Geol. Surv. Canada, dec. 4, 1859, p. 48, 

 fig. 16. Shumard, Trans. Acad. Sci. St. Louis, 2, 1866, p. 376. Meek and 

 Worthen, Proc. Acad. Nat. Sci. Philadelphia, 1865, p. 147. Hall, 24th Rep. 

 New York State Cab. Nat. Hist., 1872, p. 210 (adv. sheets 1866). Meek, 

 Geol. Surv. Ohio, Pal., 1, 1873, p. 1. Zittel, Handb. Pal., 1, 1879, p. 358. 

 Carpenter, Phil. Trans. Royal Soc. London, 174, 1884, p. 933. Wachsmuth 

 and Springer (part), Proc. Acad. Nat. Sci. Philadelphia, 3, 1886, pp. 127, 129 

 (Rev. Pal., pt. 3, sec. 2, pp. 187, 203, 205); ibid., 1890, pp. 355-390. Miller, 

 N. A. Geol. Pal., 1889, p. 252. Bather, Ann. Mag. Nat. Hist., 6th ser., 5, 

 1890, p. 324, pi. 14, fig. 6; pi. 15, figs.Sa, b. Bather, Kongl. Sv. Vet. Akad. 

 Handl., 25, 1893, p. 25, fig. 6; Nat. Sci., 12, 1898, p. 343; Treatise on Zool., 

 pt. 3, Echinoderma, London, 1900, p. 146, fig. 58, 2. Wachsmuth, Zittel- 

 Eastman Textb. Pal., 1, 1900, p. 152. Cumings, 32d Ann. Rep. Dep. Geol. 

 Nat. Res. Indiana, 1908, p. 713. Grabau and Shimer, N. A. Index Fos- 

 sils, 2, 1910, p. 501. Springer, Geol. Surv. Canada, Mem. 15P, 1911, p. 

 27; Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 212. 



Stenocrinus Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 1886, 

 pp. Ill, 127, 130, 131 (Rev. Pal., 3, sec. 2, pp. 187, 203, 206, 207)*. Bather, 

 Treatise on Zool. (Lankester), pt. 3, 1900, p. 146. Zittel, Grundzuge Pal., 1, 

 1910, p. 151. (Genotype: Heterocrinus heterodactylus Hall.) 



HETEROCRINUS ARTICULOSUS Billings. See Cremacrinusarticulosus. 

 HETEROCRINUS BELLEVILLENSIS W. R. Billings. See Ohiocrinus belle villensis. 

 HETEROCRINUS CANADENSIS Billings. See Ectenocrinus canadensis. 

 HETEROCRINUS CONSTRICTUS Hall. See Ohiocrinus constrictus. 

 HETEROCRINUS CONSTRICTUS var. COMPACTUS Meek. See Ohiocrinus compactus. 

 HETEROCRINUS CONSTRICTUS var. CONTRACTUS Wachsmuth and Springer. See 01 



crinus compactus. 



HETEROCRINUS CRASSUS Meek and Worthen. See locrinus crassus. 

 HETEROCRINUS DECADACTYLUS Emmons. See Glyptocrinus decadactylus. 

 HETEROCRINUS EXIGUUS Meek. See Heterocrinus exilis exiguus. 

 Heterocrinus exilis Hall. 



Heterocrinus exilis Hall, 24th Rep. New York State Cab. Nat. Hist., 1872, p. 23 

 pi. 5, fig. 16 (adv. sheets 1866 and 1871). Meek, Geol. Surv. Ohio, Pal., 1, 

 1873, p. 5, pi. 1, fig. 12. 

 Stenocrinus exilis Wachmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 



1886, p. 132 (Rev. Pal., pt, 3, sec. 2, p. 208). 

 Eden (Economy-McMicken): Cincinnati, Ohio, and vicinity. 



