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LIST OF ILLUSTRATIONS xxv 



FIG. PAGE 



272. Chsetonotus maximus 336 



273. ,, ,, anatomy .... ... 336 



274. Dinophilus fcsBniatus . 337 



275. Stratiodrilus tasmanicus . 338 



276. Bugula avicularia .... - . . . 342 



277. Development of Bugula . 345 



278. ,, ....-. .... 346 



279. Larva of Bugula . 346 



280. Plumatella . . . .349 



281. Cristatella . . . 350 



282. Lophopus . 351 



283. Pedicellina . . .355 



284. Phoronis australis 356 



285. ,, ,, free end .... .... 357 



28(1 ,, ,, internal organisation . .... 357 



287- ,, ,, section 358 



288. ,, ,, development . . . . 359 



289. Magellan ia flavescens, shell .... .... 361 



290. ,, lenticularis, anatomy 363 



291. ,, flavescens, lophophore . 364 



292. ,, muscular system .... .... 364 



293. Terebratula, nervous system, &c. . .... 365 



294. Typical Brachiopods . . . .368 



295. ,, ,, anatomy .... ... 369 



296. Development of Cistella . . .370 



297. Larva of Cistella . 370 



298. Development of Cistella . .371 



299. Lophophore of embryo Brachiopod . . . . 372 



300. Diagrams of phylactoloematous Polyzoon and Phoronis . . . 373 



301. Starfish, oral aspect 376 



302. ,, vertical section of arm . 378 



303. ,, ambulacral system 379 



304. Starfish, portion of vertical section of arm 380 



305. ,, diagrammatic sections 381 



306. Asterias rubens, digestive system 382 



307. Astropecten, section of stone-canal 383 



308. Anthenea flavescens, dissection from dorsal aspect .... 384 



309. Asterias rubens, structure 385 



310. Anthenea flavescens, lateral dissection 386 



311. ,, ,, aboral surface 387 



312. oral surface 387 



313. Asterina gibbosa, development 



314. . 390 



315. ,, ,, larva .... 390 



316. . . . . . 391 



317. ,, exigua, young after metamorphosis 391 



318. Asterina gibbosa, development . 392 



319. Apical system of young Starfish 393 



