956 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Periechocrinus speciosus (Hall). 



Saccocrinus speciosus Hall, Pal. New York, 2, 1852, p. 205, pi. 46, figs, la-n, 2. 



Actinocrinus (Saccocrinus) speciosus Hall, Trans. Albany Inst., 4, 1864, p. 197. 



Periechocrinus speciosus Wachsmuth and Springer, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1881, p. 307 (Rev. Pal., pt. 2, p. 133); Mem. Mus. Comp. Zool., 

 Harvard, 21, 1897, p. 521, pi. 50, fig. 6. 



Niagaran (Lockport): Lockport, New York. 



Periechocrinus tennesseensis (Hall). 



Crumensecrinites ovalis Troost, Proc. Amer. Assoc. Adv. Sci., 2, 1850, p. 62 (nom. 



mid.). 



Actinocrinites tennesseeae (part) Troost MS. 

 Saccocrinus tennesseensis Hall and Whitfield, Geol. Surv. Ohio, Pal., 2, 1875, p. 



125, pi. 6, fig. 10. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 917, fig. 

 Periechocrinus tennesseensis Wachsmuth and Springer, Mem. Mus. Comp. Zool., 



Harvard, 21, 1897, p. 528, pi. 1, fig. 4. Foerste, Jour. Geol., 11, 1903, p. 712. 



Wood, Bull. U. S. Nat. Mus., 64, 1909, p. 76, pi. 6, fig. 10. 

 Periechocrinus (Saccocrinus) tennesseensis Grabau and Shinier, N. A. Index 



Fossils, 2, 1910, p. 537, fig. 1865. 

 Niagaran: Perry and Decatur Counties, Tennessee (Brownsport) ; Yellow Springs, 



Ohio. 

 Plesiotypes.Cat. Nos. 39915 and 39916, U.S.N.M. (Troost' s types of C. ovalis 



and A. tennesseeae.) 



Periechocrinus umbrosus (Miller and Gurley). 



Saccocrinus umbrosus Miller and Gurley, Bull. 6, Illinois State Mus. Nat. Hist., 



1895, p. 24, pi. 2, figs. 13, 14. 

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



Periechocrinus urniformis (Miller). 



Saccocrinus urniformis Miller, Jour. Cincinnati Soc. Nat. Hist., 4, 1881, p. 170, 

 pi. 4, figs. 2, 2a. 



Periechocrinus urniformis Wachsmuth and Springer, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1885, p. 328 (Rev. Pal., pt. 3, sec. 1, p. 106); Mem. Mus. Comp. 

 Zool. Harvard, 21, 1897, p. 526, pi. 50, figs. 5a, b. Weller, Bull. Chicago 

 Acad. Sci. Nat. Hist. Surv., 4, pt. 1, 1900, pp. 130, 135, pi. 12, fig. 1; pi. 13, 

 figs. 3, 4. 



Saccocrinus pyriformis Miller, Jour. Cincinnati Soc. Nat. Hist., 5, 1882, p. 81, 

 pi. 3, figs. 3, 3a. 



Periechocrinus pyriformis Wachsmuth and Springer, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1885, p. 328 (Rev. Pal., pt, 3, sec. 1, p. 106). 



Niagaran (Racine): Bridgeport and Cicero, Illinois. 



Periechocrinus whitfleldi (Hall). 



Actinocrinus Christyi Hall (not Shumard, 1855), Trans. Albany Inst., 4, 1863, 

 p. 196. 



Megistocrinus christyi Winchell and Marcy, Mem. Boston Soc. Nat. Hist., 1, 1865, 

 p. 89. 



Saccocrinus Christyi Meek and Worthen, Geol. Surv. Illinois, 3, 1868, p. 347, 

 pi. 5, fig. 1 .Hall, 28th Rep. New York State Mus. Nat. Hist., doc. ed., 1877, 

 pi. 13, figs. 12-20; mus. ed., 1879, p. 127, pi. 13, figs. 12-20; llth Ann. Rep. 

 Indiana Dep. Geol. Nat. Hist., 1882, p. 254, pi. 12, figs. 12-20; pi. 15, figs. 

 3, 4. Miller, N. A. Geol. Pal., 1889, p. 278, fig. 422. Lesley, Geol. Surv. 

 Pennsylvania, Rep. P 4, 1890, p. 915, figs. 



Periechocrinus christyi Wachsmuth and Springer, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1881, p. 305 (Rev. Pal., pt. 2, p. 132). Grabau and Shimer, N. A. 

 Index Fossils, 2, 1910, p. 536. 



