235 



237 



238 239 240 



242 



243 



Figs. 234-L'43. — Free i'ndivided akms oe vakiols comatui.ids. 234. Brachials fko.m middle of arm 



OF YOUNG SPECIMEN OF HELIOMETRA GLACIALIS. 235. ARM (WITHOUT THE DISTAL PORTION) OF 



Pentameteocrinus tuberculatus. 236. Arm of Leptonemaster venustcs. 237. Arm of Comatilia 

 iridometriformis. 238. Arm of Antedon petasus. 239. Arm of Heliometra glacialis. 240. Arm 

 of Caltptometra laterals. 241. Arm of Peotixometra flavoporpubka. 242. Ae.\i of Comissia 

 lOtkeni. 243. Arm of Nemastee iowbnsis. 



197 



