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. Foss., 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- 

 niuth, Zittel-EastmanTextb. 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 Munster), Proc. Acad. Nat. Sci. Philadelphia, 1884, 

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



Pisocrinus baccula Miller and Gurley. 



Pisocrinus 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 benedictl Miller. 



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

 p. 639, pi. 6, figs. 13-16 (adv. sheets, 1S91, 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 gemmiformis 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. 



