ECHIXODERMATA. 



111. St. Mus. Xat. Hist., Keokuk Gr. 

 [Sig. tentacled.] 

 Poteriocrixus tenuidactylus, Worthen, 

 1882, Bull. Xo. 1, 111. St. Mus. Nat. 

 Hist., Keokuk Gr. [Sig. slender- 

 fingered.] 

 validus, Worthen. 1882, Bull. Xo. 1, 

 111. St. Mus. Nat. Hist., Warsaw Gr. 

 [Sig strong.] 

 varsouviensis, Worthen, 1882, Bull. No. 

 1, 111. St. Mus. Xat. Hist., Warsaw 

 Gr. [Etv. proper name.] 

 venustus. Worthen, 1882, Bull Xo. 1, 

 111. St. Mus. Xat. Hist., Kaskaskia Gr. 

 [Sig. heautiful.] 

 wachsmuthi refer to Graphiocrinus 



wachsmuthi. 

 wetherbyi, S. A. Miller, 1879, Jour. 

 Cin. Soc. Xat. Hist., vol. 2, Kaskaskia 

 Gr. rEty. proper name.] 

 zethus, Williams, 1882, Proc. Acad. Xat. 

 Sci., Chemung Gr. [Ety. mythologi- 

 cal name.] 

 Protaster flexuosus, Miller & Dyer, 1878, 

 Jour. Cin. Soc. Xat. Hist., vol. 1, 

 I'rica Slate and Hud. River Gr. [Sig. 

 full of turnings.] 

 miamiensis, S. A. Miller, 1882, Jour. 

 Cin. Soc. Xat. Hist., vol. 5, Hud. 

 Riv. Gr. [Ety. proper name.] 

 Protasterina, Ulrich, syn. for Protaster. 

 fimbriata, Ulrich, syn. for Protaster 

 flexuosus. 

 Pterotocrixus acutus, Wetherby, 1879, 

 Jour. Cin. Soc. Xat. Hist., vol. 2, 

 Kaskaskia Gr. [Sig. acute.] 

 bifureatus, Wetherby, 1879, Jour. Cin. 

 Soc. Xat. Hist., vol. 2, Kaskaskia Gr. 

 [Sig. bifurcated.] 

 cornigerus, refer to Talarocrinns corni- 



gerus. 

 aexlobatus, refer to Talarocrinus sexlo- 



batus. 

 spatulatus, Wetherby, 1879, Jour. Cin. 

 Soc. Xat. Hist., vol. 2, Kaskaskia Gr. 

 [Sig. spatulate.] 

 Retiocrixus gracilis, Wetherby, see Glyp- 



tocrinus gracilis. 

 Rhodocrixus coxanns, Worthen, 1882, 

 Bull., Xo. 1, 111. St. Mus. Xat. Hist., 

 Keokuk Gr. [Ety. proper name.] 

 melissa, refer to Lyrioerinus melissa. 

 vesperalis, White, 1880, Proc. U. S., Xat. 

 Mus., vol. 2, Upper Coal Meas. (?) 

 [Sig. belonging to evening.] 

 Saccocrixus egani, S. A. Miller, 1881, 

 Jour. Cin. Soc. Xat. Hist., vol. 4, Ni- 

 agara Gr. [Ety. proper name.] 

 infelix, AVinchell & Marcy, 1865 (Megis- 

 tocrinus infelix), Mem. Bost. Soc. 

 Xat. Hist., Xiagara Gr. [Sig. un- 

 happy.] 

 marcouanus, Winchell & Marcy, 1365 

 (Megistocrinus marcouanus), Mem. 

 Bost. Soc. Xat. Hist., Xiagara Gr. 

 [Ety. proper name.] 

 necis, Winchell & Marcy, 1865 (Megis- 



tocrinus necis), Mem. Bost. Soc. Xat. 

 Hist., Niagara Gr. [Sig. death.] 

 Saccocrixus pyriformis, S. A. Miller, 

 1882, Jour. Cin. Soc. Xat. Hist., vol. 

 5, Niagara Gr. [Sig. pear shaped.] 



urniformis, S. A. Miller, 1881, Jour. Cin. 

 Soc. Xat. Hist., vol. 4, Xiagara Gr. 

 [Sig. urn shaped.] 

 Scaphiocrixus ' carbonarius, refer to Gra- 

 phiocrinus carbonari us. 



gibsoni, White, 1878, Proc. Acad. Xat. 

 Sci., Keokuk Gr. [Ety. proper name.] 



gurleyi, White, 1878, Proc. Acad. Xat. 

 Sci., Keokuk Gr. [Ety. proper name.] 



macadamsi, refer to Graphiocrinus mac- 

 adamsi. 



rudis, refer to Graphiocrinus rudis. 



simplex, refer to Graphiocrinws simplex. ' 



spinifer, Wetherby, 1880, Jour. Cin. Soc. 

 Xat. Hist., vol. 3, Kaskaskia Gr. [Sig. 

 spine bearing.] 



spinobrachiatus, refer to Graphiocrinus 

 spinobrachiatus 



striatus, refer to Graphiocrinus striatus. 



tortuosus, refer to Graphiocrinus tortu- 

 osus. 



wachsmuthi, refer to Graphiocrinus wach- 

 smuthi. 

 Scyphocrinus, Hall. This name was pre- 

 occupied by Zenker in 1833, andD'Or- 

 bigny proposed instead of it Cupulo- 

 crinus. 



heterocostalis refer to Cupulocrinus heter- 

 ocos talis. 

 Scytalocrinus Wachsmuth & Springer, 1879, 

 Proc. Acad. Xat. Sci. [Ety. skutale, 

 a staff or club; krinon, a lily.] A 

 subgenus of Poteriocrinus of doubtful 

 utility. 



wachsmuthi, Wetherby, 1880, Jour. Cin. 

 Soc. Xat. Hist., vol. 3, Kaskaskia Gr. 

 [Ety. proper name.] 

 Stegaxocrixus concinnus instead of Ac- 

 tinocrinus concinnus 



sculptus. Hall, instead of Actinocrinus 

 sculptus. 

 Stephaxocrixus osgoodensis, S. A. Miller, 

 1879, Jour. Cin. Soc. Xat. Hist . vol. 

 2, Xiagara Gr. [Ety. proper name.] 



pentalobus, Hall, 1879 (Codaster penta- 

 lobus), Uesc. XeAv Spec. Foss., Xi- 

 agara Gr. [Sig. five lobed.] 



pulchellus, Miller & Dyer, 1878 (Codas- 

 ter pulchellus), Jour. Cin. Soc. Xat. 

 Hist., vol. 1, Xiagara Gr, [Sig. beau- 

 tiful.] 

 Stereocrixus, Barris, 1879, Proc. Daven- 

 port Acad. Sci., vol. 2. [Ety. stereos, 

 firm; krinon, a lily.] 



triangularis, Barris, 1879, Proc. Daven- 

 port Acad. Sci., vol. 2, Upper Helder- 

 berg Gr. [Sig. triangular.] 



triangulatus var. liberatus, Barris, 1879, 

 Proc. Davenport Acad. Sci., vol. 2. 

 Upper Helderberg Gr. [Sig. fur- 

 rowed.] 



