332 CARBONIFEROUS FORMATIONS AND FAUNAS OF COLORADO. 



EOCIDARIS Desor, 1858. 

 EociDARis HALLiANA Geinitz? 



1866. Eoddaris haUianus. Geinitz, Garb, uiul Dyas in Neljraska, p. 6], tab. 5, figs. 1 a, h, 2 a, b. 



Upper Goal Measure^!: Nebraska City, Nebr. 

 1872. Eocidans hallianus. Meek, U. S. Geol. Surv. Nebraska, p. 152, pi. 7, figs. 9 a-d. 



Upper Goal Measures: Nebraska Gity, Nebr. 



1894. Archxocidark hallianus. Keyes, Missouri Geol. Surv., vol. 4, p. 129. 

 Upper Coal Measures: Kansas Gity, Mo. 



1895. Archxocidaris hallianus. Keyes, Iowa Acad. Sci., Proc, vol. 2, p. 190. 

 Upper Goal IMeasures: Kansas City, Mo.; Nebraska Gity, Nebr. 



The material collected has suffei'ed so much from weathering that a satisfactory 

 identification is not possible. The fossils have been referred to Geinitz's species 

 largely on account of their minute size. 



Locality and horizon. — Leadville district (station 2265). Crested Butte district 

 (station 2320); Weber limestone. 



EUPACHYCRINUS Meek and Worthen, 1865. 



EUPAOHYCEINUS? Sp. 



This identification rests upon a single imperfect specimen. Its generic position 

 can not be determined with certainty, but it is of interest as being the only crinoid 

 in the collections examined. 



Locality and horizon. — San Juan region (station 2221); upper portion of the 

 Hermosa formation. 



HEIiMIlS^THA. 



CONULARIA Miller, 1821. 



CONULAKIA CKUSTULA White? 



1880. Comdaria crustula. White, U. S. Geol. Geog. Surv. Terr., Twelfth Ann. Bept., for 1878, pt. 1, 



p. 170, pi. 42, fig. 4a. 

 Goal Measures: Kansas Gity, Mo.; near Taos, N. Max. 



1881. Comdaria crustula. White, U. S. Geog. Geol. Surv. W. 100th Mer., Rept., vol. 3, Supp., Appendix 



p. xsviii, pi. 3, figs. 4(1, h. 



Carboniferous: Near Taos, N. Mex. 

 1894. Conularia crustula. Keyes, Missouri Geol. Surv., vol. 5, p. 219, pi. 35, fig. 2. 



Upper Coal Measures: Kansas Gity, Mo. 

 1897. Conularia conf. crustula. Smith, Am. Phil. Soc, Proc, vol. 35, p. 41. 



Goal Measures: Scott County, Ark. 



Crushed and imperfect specimens of Conularia appear in our collections from 

 two localities. In their present condition it would be difiicult to reach a trustworthy 

 conclusion as to their relations to each other and to other forms; they seem to belong 

 to a single species, namely, that to which White gave the name Conularia crustula. 



