MUSEUM OF COxMPARATIVE ZOOLOGY. 71 



DESCEIPTION" OF PLATES. 



PliATE XI. 



Fig. 278. Amphiura maxima, below ; |. 



Fig. 279. ** '* above ; t. 



Fig. 280. *' " tentacle-scales;^. 



Fig. 281. *' '* arm-spines ; |. 



Fig. 282. '* bellis, below ; I. 



Fig. 283. " " above ; |. 



Fig. 284. *' ** arm-spines ; 5. 



Fig. 285. '* incana, below ; -^-. 



Fig. 286. " ♦* radial shields ; 1. 



Fig. 287. ** '* arm-spines ; |. 



Fig. 288. *' argentca, below ; ^. 



Fig. 289. " •* above ; f. 



Fig. 290. '* *' arm-spines;^. 



Fig. 291. '* *• joints near tip ; $. 



Fig. 292. " acacia, below ; ^. 



Fig. 293. " " above ; £. 



Fig. 294. " " arm-spines ; ^. 



Fig. 295. " constricta, below ; h . 



Fig. 296. " " above ; {. 



Fig. 297. " " arm-spines ; i. 



Fig. 298. " " joints near tip of arm ; {. 



Fig. 299. ** tomentosa, below ; ^. 



Fig. 300. ** " above ; i. 



Fig. 301. ** " arm-spines ; {. 



Fig. 302. " iris, below ; f. 



Fig. 303. " " above ; i. 



Fig. 304. " *' arm-spines ; ^. 



Fig. 305. " lanceolata, below ; f. 



Fig. 306. " " above ; -J. 



Fig. 307. " " arm-spines; f. 



Fig. 308. " glabra, below ; ^. 



Fig. 309. *♦ " above ; ^. 



Eig. 310. " " arm-spines ; f. 



Fig. 311. *' angularis, below ; \. 



Fig. 312. " " above ; 1. 



Fig. 313. •* " arm-spines ; \. 



Fig. 314. " dilatata, below ; -^. 



Fig. 315. " " above ; I. 



Fig. 316. " " arm-spiues ; J. 



