2 
Page Meek on new Silurian Crinoids and Shells. 295 
Art. XXXVII— On some new Silurian Crinoids and Shelis ; 
by F. B. Mzrx. 
Derenprocrrinus Caser Meek. 
Compare Pentacrinite Christy, 1848; Letters on Geology, Plate IT. 
eral pentagonal outline, the upper side being longest and deeply 
excavated for the reception of the comparatively narrow tree ra- 
wn : 
Ventral extension of the body more than four times as long as 
readth ; 
