440 BULLETIN f)2, UNITED STATES NATIONAL MUSEUM. 



Dlmerocrinus lockportensls (Ringueberg). 



Glyptaster (Eucrinus) lockportensis Ringueberg, Annals New York Acad. Sci., 



5, 1890, p. 304, pi. 3, fig. 4. 

 Niagaran (Lockport, Gasport member): Lockport, New York. 



Dimerocrinus milliganae (Miller and Gurley). 



Glyptaster milliganae Miller and Gurley, Bull., Illinois State Mus. Nat. Hist., 10, 



1896, p. 87, pi. 5, figs. 7-9. 

 Niagaran (Brownsport) : Decatur County, Tennessee. 



Dimerocrinus occidentalis (Hall). 



Glyptaster occidentalis Hall, Trans. Albany Inst, 4, 1863, p. 204 (?bstract, p. 10); 



20th Rep. New York State Cab. Nat. Hist., 1868 (extras, 1865), p. 326, pi. 10 (1), 



fig. 3; rev. ed., 1870, p. 369, pi. 10, fig. 3; 20th Rep. New York State Mus. 



Nat. Hist., doc. ed., 1877, pi. 13, figs. 7-11; Mus. ed., 1879, p. 133, pi. 13, figs. 



7-11. Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 1881, p. 



370 (Rev. Pal. pt. 2, p. 196). Hall, llth Rep. Indiana Dep. Geol. Nat. 



Hist., 1882, p. 262, pi. 12, figs. 7-11. Whitfield, Geol. Wisconsin, 4, 1882, p. 



281, pi. 16, figs. 3, 4. Chamberlin, Geol. Wisconsin, 1, 1883, p. 191, fig. 



Miller, N. A. Geol. Pal., 1889, p. 247, fig. 312. Wachsmuth and Springer, 



Mem. Mus. Comp. Zool. Harvard, 20, 1897, p. 194, pi. 18, fig. 5a-c. 

 Thysanocrinus occidentalis Weller, Bull. Chicago Acad. Sci., Nat. Hist. Surv., 4, 



pt. 1, 1900, p. 73, pi. 1, figs. 6, 7. Grabau and Shimer, N. A. Index Fossils, 



2, 1910, p. 547. 

 Glyptaster occidentalis var. crebescens Hall, 28th Rep. New York State Mus. 



Nat. Hist., Mus. ed., 1879, p. 133; llth Ann. Rep. Indiana Dep. Geol. Nat. 



Hist., 1882, p. 263. 

 Niagaran: Waldron and Hartsville, Indiana (Waldron): Racine, Wisconsin; 



Bridgeport and Ha\vthorne, Illinois (Racine). 



Dimerocrinus pentangularis (Hall). 



Glyptaster pentangularis Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, 

 p. 326, pi. 10 (1), fig. 4 (extras, 1865); ibid., rev. ed., 1870, p. 369, pi. 10, fig. 4. 

 Thysanocrinus pentangularis Weller, Bull. Chicago Acad. Sci. Nat. Hist. Surv., 

 4, pt. 1, 1900, p. 70, pi. 1, figs. 8-11. Grabau and Shimer, N. A. Index 

 Fossils, 2, 1910, p. 547. 

 Niagaran (Racine): Racine, Wisconsin; Bridgeport and Hawthorne, Illinois. 



Dimerocrinus roemeri (Troost). 



Gilbertsocrinites roemeri Troost MS., 1850. 



Dimerocrinus roemeri (Troost) Wood, Bull. U. S. Nat. Mus., 64, 1909, p. 101, pi. 



15, fig. 4. 



Niagaran (Brownsport): Decatur and Perry Counties, Tennessee. 

 Holotype. Cat. No. 39968, U.S.N.M. 





Dimerocrinus waldronensis (Miller and Dyer). 



Cyathocrinus waldronensis Miller and Dyer, Cont. to Pal., 2, 1878, p. 6, pi. 



fig. 9. Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 1896, p. 49, 



pi. 3, figs. 19, 20. Miller, N. A. Geol. Pal., 2d App., 1897, p. 741, fig. 1330. 

 Dimerocrinus waldronensis Wachsmuth and Springer, Proc. Acad. Nat. Sci. 



Philadelphia., 1885, p. 323 (Rev. Pal., pt. 3, sec. 1, p. 101). 

 Macrostylocrinus waldronensis Wachsmuth and Springer, ibid., 1886, p. 149 



(Rev. Pal.,pt. 3, sec. 2, p. 225). 

 Niagaran (Waldron): Waldron, Indiana. 



