26 



(Echinoderms.) 



1 20. A Cystideam In drift at Alfred 



121. Crinoid stems and calyx, small. 



122. Transverse sections of larger crinoid stems. Very common 



locally in Portage and Chemung rocks. 



(Bryozoa.) 



123. Fene stella sp. 



(Fossil bivalve supposed to be related to fresh-water forms.) 



124. Amnigenia cat skill en sis. Common locally eastward in 



Oneonta and Catskill rocks. 



As a rule, the figures which follow are somewhat less than 

 life size; especially is this true of the Cephalopods. Size, howev- 

 er, differs with different individuals and cannot be regarded as of 

 great importance in determining specimens. 



