MUSEUM OF COMPARATIVE ZOOLOGY. 167 



Fig. 201. Ophiothamnus remotus, below ; ^. 



Fig. 202. " " above ; ^P-. 



Fig. 203. ** " arm-joints ; ^. 



Fig. 204. Ophiacantha tuberculosa, below ; f . 



Fig. 205. " " above ; \. 



Fig. 206. " granulosa, below; 4. 



Fig. 207. " " above ; \. 



Fig. 208. " " spine diagram ; f. 



Fig. 209. Ophiomitra plicata, below ; §. 



Fig. 210. " " above ; |. 



Fig. 211. " " a single upper arm-spine ; f. 



Fig. 212. " " spine diagram ; §. 



Fig. 213. *' dipsacos, below ; \. 



Fig. 214. " " above ; h 



Fig. 215. " " .spine diagram ; J. 



Fig. 216. " Sarsii, below ; ^. 



Fig. 217. " " spine diagram ; ^. . ' 



Fig. 218. Ophiocamax vitrea, below; ^. 



Fig. 219. '* " above ; f. 



Fig. 220. '* " spine diagram ; ?. 



Fig. 221. " " one spine ; f. 



PLATE IX. 



Fig. 222. Ophiacantha Troscheli, below ; \. 



Fig. 223. '* " above ; f. 



Fig. 224. " " spine diagram ; f. 



Fig. 225. " stimulea, below ; f. 



Fig. 226. " " above ; f. 



Fig. 227. " " spine diagram ; f. 



Fig. 228. " " single disk-spine ; ^{^. 



Fig. 229. " sentosa, below ; §. 



Fig. 230. " " above ; §. 



Fig. 231. '* " spine diagram ; ^. 



Fig. 232. '• " disk-spines stripped of skin ; -^j°. 



Fig. 233. Ophiomitra plicata, (young) below; \. 



Fig. 234. •' " " above; I. 



Fig. 235. " " " spine diagram ; \, 



Fig. 236. " carduus, below ; ?. 



Fig. 237. " " above ; ?. 



Fig. 238. " " spine diagram ; f. 



Fig. 239. " chelys, below ; f 



Fig. 240. " «' above ; f 



Fig. 241. " " .spine diagram ; f. 



Fig. 242. Ophiocamax vitrea, (young) below ; ?. 



Fig. 243. " " " above ; ?. 



Fig. 244. " " " spine diagram ; ^. 



