126 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



BILOBIT.ES Linnaeus. Genotype: Anomia biloba Linnaeus. 



Bilobites Linnaeus, Syst. Naturae, ed. Muller, 6, 1775, p. 325. Zittel, Handb. 

 Pal., 1, Munich, 1880, p. 674. Nathorst, Kongl. Sven. Vet.-Akad. Handl., 

 18, No. 7, 1881, pp. 38, 87. Waagen, Mem. Geol. Surv. India, Pal. Indica, 

 13th ser., 1, 1884, p. 549. Hall, Bull. Geol. Soc. Amer., 1, 1889, p. 21. 

 Dawson, Quart. Jour. Geol. Soc. London, 46, 1890, p. 595. Beecher, Amer. 

 Jour. Sci., 3d ser., 42, 1891, p. 51; 44, 1892, p. 152. Hall and Clarke, Pal. 

 New York, 8, pt. 1, 1892, pp. 204, 223; llth Ann. Rep. New York State Geol., 

 1894, p. 269. Koken, Die Leitfossilien, Leipzig, 1896, p. 234. Cumings, 

 Amer. Jour. Sci., 4th ser., 1903, p. 40. Grabau and Shimer, N. A. Index 

 Fossils, 1, 1907, p. 259. 



Dicoelosia King, Mon. Permian Fossils England, Pal. Soc., 1850, p. 106. 



Bilobites acutllobus (Ringueberg). 



Orthis acutiloba Ringueberg, Proc. Acad. Nat. Sci. Philadelphia, 1888, p. 134, 



pi. 7, fig. 5. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 507, figs. 

 Bilobites acutilobus Beecher, Amer. Jour. Sci., 3d ser. 42, 1891, p. 52, pi. 1, fig. 1. 

 Clinton (Rochester): Lockport, New York. 



Bilobites bilobus (Linnaeus). 



Anomia biloba Linnaeus, Systema Naturae, ed. 12, 1767, p. 1154. 



Delthyris sinuatus Hall, Geol. New York, Rep. 4th Dist., 1843, p. 105, fig. 8. 



Owen (Hall), Amer. Jour. Sci. Arts, 48, 1845, p. 313, fig. 8. 

 Spirifer bilobus Hall, Amer. Jour. Sci., 2d ser., 20, 1849, p. 228; Pal. New York, 



4, 1852, p. 260, pi. 54, fig. 1. 

 Orthis biloba Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, p. 85. 



Davidson, Mon. British Sil. Brach., Pal. Soc., 1869, p. 206, pi. 26, figs. 10- 



15. Safford, Geol. Tennessee, 1869, p. 315, fig. 10. Hall, llth Rep. State 



Geol. Indiana, 1882, p. 286, pi. 27, fig. 16. Lesley, Geol. Surv. Pennsylvania, 



Rep. P 4, 1889, p. 510, fig. 

 Bilobites bilobus Beecher, Amer. Jour. Sci., 3d ser., 42, 1891, p. 52, pi. 1, fig. 28. 



Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 190, 204, 205, 223, pi. 



5B, figs. 11-14. Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 259. 

 Niagaran: Lockport, etc., New York; Ontario (Rochester); Waldron, Indiana, 



and Newsom, Tennessee (Waldron). 

 Anticostian (Gun River and Jupiter River): Anticosti. 



BISTRAMIA Hoek. Genotype: B. elegansHoek. 



Bistramia Hoek, Neues Jahrb. Min., Geol., Pal., 34, 1912, p. 247. 



Bistramia elegans Hoek. 



Bistramia elegans Hoek, Neues Jahrb. Min., Geol., Pal., 34, 1912, p. 247, pi. 8, 



figs. 12, 13. 

 Ordovician: Totorapampa, Bolivia. 



BLASTOIDOCRINUS Billings. Genotype: B. carcharisedens Billings. 



Blastoidocrinus Billings, Geol. Surv. Canada, dec. 4, 1859, p. 18. Chapman, 

 Canadian Jour., n. s., 6, 1861, p. 514, footnote; Expos. Min. Geol. Canada, 

 1864, p. 108. Zittel, Handb. Pal., 1, 1879, p. 423. Etheridgeand Carpenter, 

 Ann. Mag. Nat. Hist., 5th ser., 9, 1882, p. 214, footnote. Miller, N. A. Geol. 

 Pal., 1889, p. 229. Jaekel, Stammesgeschichte d. Pelmatozoen, 1, Thecoidea 

 u. Cystoidea, Berlin, 1899, p. 389. Bather, Rep. Mus. Assoc., 1900, p. 103; 

 Treatise on Zool., pt. 3, Echinoderma 1900, p. 80, fig. 3. Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 477. Hudson, Bull. New York State Mus., 

 149, 1911, p. 203. Springer, Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 167. 



