980 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Piloceras gracile Billings. 



Piloceras gracile Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 257. 

 Canadian (Quebec-H): Schooner Island, Pistolet Bay, Newfoundland. 



PILOCERAS NEWTON- WINCHELLI Clarke. See Clarkoceras newton winchelli. 



Piloceras triton Billings. 



Piloceras Triton Billings, Pal. FOBS., 1, Geol. Surv. Canada, 1865, p. 257. 

 Canadian (Quebec, G-H): West side Pistolet Bay, Newfoundland. 



PILOCERAS WINCHELLI Miller. See Clarkoceras newton winchelli. 



Piloceras wortheni Billings. 



Piloceras wortheni Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 256, fig. 

 240a-d. Miller, N. A. Geol. Pal., 1889, p. 453, fig. 758. Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 46, fig. 1244. 

 Canadian (Quebec-H): Portaux Choix, Newfoundland. 



PINNAPORELLA Simpson. See Ptiloporella Hall. 

 PINNAPORINA Simpson. See Ptiloporella Hall. 



PISOCRINUS Dekoninck. Genotype: P. pilula Dekoninck. 



Pisocrinus Dekoninck, Bull. Acad. Roy. Belgique, 2d ser., 4, 1858, p. 93. 

 Salter, Cat. Camb. Sil. Foss., 1873, p. 128. Angelin, Icon. Crin., 1878, p. 

 20. Zittel, Handb. Pal., 1, Munich, 1879, p. 348. Wachsmuth and Springer, 

 Proc. Acad. Nat. Sci. Philadelphia, 1886, p. 172 (Rev. Pal., 3, p. 96); ibid., 

 1888, p. 350. Miller, N. A. Geol. Pal., 1889, p. 269. Bather, Kongl. Sven. 

 Vet.-Akad. HandL, 25, No. 2, 1893, pp. 21, 22, pi. 1, figs. 1-23; p. 25, figs. 

 1-2; Nat. Sci., 12, 1898, p. 343. Jaekel, Zeits. d. d. geol. Gesell., 52, 1900, 

 p. 482. Sollas, Quart. Jour. Geol. Soc. London, 56, 1900, p. 270. Bather, 

 Treatise on Zool., pt. 3, Echinoderma, London, 1900, p. 149, fig. 62. Wachs- 

 muth, Zittel-Eastman Textb. Pal., 1, 1900, p. 135. Slocom, Field Columbian- 

 Mus., 2, Geol. Ser., 1908, p. 278. Grabau and Shimer, N. A. Index Fossils, 

 2, 1910, p. 498. Springer, Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 208. 



Triacrinus Ringueberg (not Miinster), Proc. Acad. Nat. 'Sci. Philadelphia, 1884, 

 p. 144. (Genotype: T. pyriformis Ringueberg.) 



Pisocrinus baccula Miller and Gurley. 



Piaocrinus baccula Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 7, 



1895, p. 79, pi. 5, figs. 23-26. Miller, N. A. Geol. Pal., 2d App., 1897, p. 749, 



fig. 1368. 

 Niagaran (Laurel): Near St. Paul, Indiana. 



Pisocrinus benedict! Miller. 



Pisocrinus benedicti Miller, 17th Ann. Rep. Indiana Dep. Geol. Nat. Res., 1892, 

 p. 639, pi. 6, figs. 13-16 (adv. sheets, 1891, p. 29); N. A. Geol. Pal., 1st App., 

 1892, p. 681, fig. 1242. Slocom, Field Columbian Mus., 2, Geol. Ser., 1908, 

 p. 279, pi. 84, figs. 8-11. 



Niagaran: Marion, Wabash, etc., Indiana; Lemont, Illinois. 



Pisocrinus campana Miller. 



Pisocrinus campana Miller, 17th Ann. Rep. Indiana Dep. Geol. Nat. Res., 1892, 



p. 642, pi. 11, figs. 4, 5 (adv. sheets, 1891, p. 32). 

 Niagaran: Wabash, Indiana. 



Pisocrinus gemmiformls Miller. 



Pisocrinus gemmiformis Miller, Jour. Cincinnati Soc. Nat. Hist., 2, 1879, p. 113, 

 pi. 9, figs. 6, 6a, 6b, 6c; N. A. Geol. Pal., 1889, p. 269, fig. 391; 17th Ann. 



