410 Keokuk Group at Crawfordsville, Ind. — Beachler. 
1869. Calceocrinus hradleyi Meek and Worthen. Proc. Acad. Nat. ScL, 
Phila., p. 73, also 1873 Geol. Rep. 111., vol. v, p. 503, pi. 14, fig. 9. 
1868. Catillocritms hradleyi Meek and Worth»-n. Proc. Acad. Nat. Sci., 
Phila., p. 343; also 1868, Geol. Rep. III., vol. v, p. 504, pi. 14, figs. 10 
a. b. 
1865. Gyathocrinus a/'ftorews Meek and Worthen . Proc. Acad. Nat. Sci., 
Phila., p. 160; also Geol. Rep. 111., vol. iii, p. 530. 
1879. (J) Gyathocrinus liarrisi S. A. Miller. Jour. Gin. Soc. Nat. Hist., 
vol. ii, pi. 15, fig. 3. 
1869. Gyathocrinus inspirat us C^) Lyon, Trans. Amer. Philos. Soc, vol. 
xiii, p. 457, pi. 37, fig. k. 
1859. Gyathocrinus mltuihrachiatus Lyon and Casseday. Amer. Jour. Sci. 
vol. xxviii. 
1870. Gyathocrinus poterium Meek and Worthen. Proc. Acad. Nat. Sci., 
Phila , p. 34. Geol. Rep. 111., vol. v, p. 489, pi. 13, fig. 4. 
1860. Dichocrinus ficus Casseday and Lyon. Proc. Amer. Acad. Arts and 
Sci., vol. V, p. 34; Meek and Worthen, 1873; Geol. Rep. 111., vol. v, p. 500, 
pi. 14, fi-g. 1. 
1860. Dichocrinus polydactylus Casseday and Ljon. Proc. Amer. Acad. 
Arts and Sci., vol. v, p. 30. 
Syn. D. expansus Meek and Worthen (not De Kon and Leh., 1853.) 
Proc. Acad. Nat. Sci., Phila., p. 344; also Geol. Rep. 111., vol. v, p. 500, 
pi. 14, fig. 1. 
1858, Forbesiocrinus Wortheni Hall. Geol. Rep. Iowa, vol. i, pt. 3, p. 633, 
pL17,fig. 5. 
* 1859. OUacrinus tuberosus Lyon and Casseday. (Goniasteroidocrinus 
tuberosus and type of that genus.) Amer. Jour. Sci. and Arts., vol. 
xxviii, (ser. 3) p. 233; Wachsmuth and Springer, Proc. Acad. Nat. Sci., 
Phila., p. 263. 
1859. Onychocrinus exsculptus Lyon and Cassaday. (Typical species.) 
Amer. Jour. Sci., vol. xxix, p. 78. 
Syn. Onychocrinus (Forbesiocrinus) nonooodi Meek and Worthen. 
Geol. Rep. 111., vol. ii, p. 245, pi. 18, fig. 3. 
*1859. Onychocrinus ramulosus Lyon and Cassedoy. (Forbesiocrinus 
ramulosiis L. and C. not Hall.) Amer. Jour. Sci., vol. xxviii, p. 285. 
1835. Platycrinus hemispherieus Meek and Worthen. (Pleurocrinus.) 
Proc. Acad. Nat. Sci., Phila, p. 163 ; also Geol. Rep. 111., vol. iii. p. 
466, pi. 16, fig. 9, and vol. v, p. 16, fig. 6 a. b. c. 
1870. Poteriocriiius (pachylocrinus) concinnus Meek and Worthen. (Pot. 
[Zeacviaus'] concinnus.) Proc. Acad. Nat. Sci., Phila., p. 26; Geol. Rep. 
111., vol. V, p. 490, pi. 14, fig. 3. 
1869. Poteriocrinus (Scwphiocrinus) coreyi Meek and Worthen (not Pot. 
coreyi Worthen. Geol. Rep. 111., vol. vi, p. 5l4:.=Pot. Scytalacrinus 
f/randis, W. and Sp.) Proc. Acad. Nat, Sci., Phila., p. 148; Geol. Rep. 
ill., vol. V, pi. 15, fig. 1. 
*i870. Poteriocrinuti (Decadocnnus) depress us Meek and Worthen. (Sea. 
phiocrinus depressus) Proc. Acad. Nat. Sci., Phila., p. 27; Geol. Rep. 
111., vol. V, pi. 14, fig. 8. 
