18 P. A. BATHBR, CRINOIDEA OF GOTLAND. 



Supplementary plates. IR = all Interradial plates, except Basals. Also = In- 



terradius. 

 ibr = Interbrachial. 

 i II Br = Inter-secundibrach. 

 i III Br= Inter-tertiobrach. 



Other signs. C = Cirral or cirrus-ossicle. 



\f = Radical, or root-ossicle. 



Br = Fixed Brachials. 



« Br = Alpha brachs; explained under Calceocrinus ; so 

 also /?Br, y Br and so on. 



