ECHINODERMA TA—CRINOIDEA . 



559 



Fig. 1894. Eucalyptocrinus ccelatus, var. 

 levis. (After Hall.) 



181. E. coelatus Hall. Siluric. 

 Plates of dorsal cup densely 



crowded with small pustules of 

 uniform size. 



Niagaran of New York. 



182. E. coelatus var. levis* Gra- 

 bau and Shimer. (£. decorus 

 of American authors. ) ( Figs. 

 1893, 1894.) Siluric. 



Differs from the species in lack- 

 ing the pustulose surface and in 

 that the five interdistichal plates 

 are truncate at base instead of 

 acute as in the type oi E. coelatus. 



Rochester of New York, etc. 



183. E.crassus Hall. (Fig. 1895.) 



Siluric' 

 Large (crown sometimes 4 



inches long) and usually half as 



wide. 



Niagaran of Ohio, Indiana and 



Illinois. 



184. E. elrodi S. A. Miller. (In- 

 cludes part of E. coelatMS 

 Hall.) (Fig. 1896.) Siluric. 



Fig. 1895. Eucalyptocrinus crassus, en- 

 tire specimen, X %■ (After Hall. ) 



