988 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



PLATYCRINUS— Continued. 



pt. 2, 1858, pp. 525, 526, fig. 55.— White, Boston Jour. Nat. Hist., 7, 1863, p. 

 489, footnote; pp. 491, 493, 495.— Meek and Worthen, Proc. Acad. Nat. Sci. 

 Philadelphia, 1865, pp. 160, 161; Geol. Surv. Illinois, 2, 1866, p. 170, 172.— 

 Beyrich, Ann. Mag. Nat. Hist., 4th ser., 7, 1871, p. 400, 401, fig.— Meek and 

 Worthen, Geol. Surv. Illinois, 5, 1873, p. 329.— Austin, Ann. Mag. Nat. Hist., 

 4th ser., 16, 1875, p. 90. — Wachsmuth and Springer, Proc. Acad. Nat. Sci. 

 Philadelphia, 1878, p. 243; ibid., 1881, p. 240; ibid., 1887, p. 93; ibid., 1888, 

 p. 342.— Zittel, Handb. Pal., 1, 1879, p. 364.— Etheridge and Carpenter, Ann. 

 Mag. Nat. Hist., 5th ser., 7, 1881, p. 294— Miller, N. A. Geol. Pal., 1889, p. 

 270.— Grabau, Bull. Buffalo Soc. Nat. Sci., 6, 1899, p. 144.— Bather, Treatise 

 on Zool., pt. 3, Echinoderma, London, 1900, p. 156, 157, fig. 71, 1-3.— Weller, 

 Bull. Chicago Acad. Sci., Nat. Hist. Surv., 4, pt. 1, 1900, p. 139, fig. 51.— 

 Springer, Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 199. 



Platycrinus augusta Slocom. 



Platycrinus augusta Slocom, Field Columbian Mus., Geol. Ser., 2, 1908 (10, 292, 



pi. 86, figs. 5-7). 

 Niagaran (Racine): Drainage Canal near Lemont, Illinois. 



Platycrinus corporiculus Ringueberg. 



Platycrinus corporiculus Ringueberg, Bull. Buffalo Soc. Nat. Sci., 5, 1886, p. 12, 



pi. 1, %■ 9. 

 Clinton (Rochester): Lockport, New York. 



Platycrinus? dubius Weller. 



Platycrinus? dubius Weller, Bull. Chicago Acad. Sci. Nat. Hist. Surv., 4, pt. 1, 



1900, p. 140, pi. 14, fig. 4. 

 Niagaran (Racine): Bridgeport, Illinois. 



Platycrinus parvus Hall. See Cordylocrinus plumosus. 



Platycrinus plumosus Hall. See Cordylocrinus plumosus. 



Platycrinus pr^ematurus Hall and Whitfield. See Marsipocrinus prsematurus. 



Platycrinus siluricus Hall. 



Platycrinus siluricus Hall, Trans. Albany Inst., 10, 1883, p. 65 (adv. sheets, 1879, 



p.9); 11th Ann. Rep. Indiana Dep. Geol. Nat. Hist., 1882, p. 256, pi. 15, fig. 



15.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 690, figs. 

 Niagaran (Waldron): Waldron, Indiana. 



Platycrinus tennesseensis Roemer. See Marsipocrinus tennesseensis. 



Platycystis Bather. See Platycystites Miller. 



PLATYCYSTITES Miller. Genotype: P. faberi Miller. 



Platycystites Miller, N. A. Geol. Pal., 1889, p. 272. 



Platycystis Bather, Treatise on Zool., pt. 3, Echinoderma, 1900, p. 51. 



Platycystites faberi Miller. 



Platycystites faberi Miller, N. A. Geol. Pal., 1889, p. 272, fig. 398— Bather, 

 Treatise on Zool., pt. 3, 1900, Echinoderma, p. 51; Trans. Roy. Soc. Edin- 

 burgh, 49, pt. 2, 1913, p. 371, fig. 5. 



Chazyan (Ottosee) (Silurian in error): Southwestern Virginia. 



Plastotype— Cat. No. 35396, U.S.N.M. 



PLATYMERELLA Foerste. Genotype: P. manniensis Foerste. 



Platymerella Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 71. 



