
GER. if00 7. NEw CRINOIDS — SLOCOM. 303 
_ Previous to the present publication there have been described 
from the Chicago Area a total of 62 species of crinoids divided among 
26 genera. A complete list of these was given by Weller in 1g00.* 
Two years later Weller obtained a specimen which showed that 
Cyathocrinus cora Hall and Crotalocrinus americanus Weller were one 
and should be known as Crotalocrinus cora Hall, t| thus making the 
number of species 61. The species obtained by the present writer 
increase the total number of species of crinoids known from the Chicago 
Area to 75 and that of the genera to 30. A full list of these follows. 
In addition it may be noted that several specimens which were 
associated with those here described and which are evidently new 
Species proved too fragmentary for description. Should better speci- 
mens of these be obtained, three or more new species and at least one 
new genus may be added to the list. 
' Bully 4-Nat: Hist.-Surv.; Chicago Acad. Sci., Pt. I. 
+ Jour. Geol., Vol. X, pp. 532-4. 
