xvi LIST OF ILLUSTRATIONS 



FIG. rAGE 



194. SHELL OF ACORN BARNACLE (Balanus) . . . . 263 



195. THE ACORN BARNACLE (Balanus porcatus) WITH APPENDAGES 



PROTRUDED ...... 264 



196. A GROUP OP MARINE COPEPODS, MAGNIFIED . . . 265 



197. A GROUP OF OSTHACODE SHELLS ..... 265 



198. Evadne . ... . . . . . . 266 



199. MARINE ISOPODS ... . 267 



200. MARINE AMPHIPODS . . . . . . 268 



201. THE MANTIS SHRIMP (Squilla Mantis) . . . .270 



202. THE OPOSSUM SHRIMP (Mysis chamceleon) . . . 271 



203. PARTS OF LOBSTER'S SHELL, SEPARATED, AND VIEWED FROM 



ABOVE ......... 272 



204. A SEGMENT OF THE ABDOMEN OF A LOBSTER . . . 272 



205. APPENDAGES OF A LOBSTER . . ... 273 



206. LONGITUDINAL SECTION OF THE LOBSTER . . . . 274 



207. THE SPINY LOBSTER (Palinurus vulgaris) .... 275 



208. THE NORWAY LOBSTER (Nephrops norvegicus) . . . 276 



209. 1. THE MUD-BORER (Gebia siellata). 2. THE MUD-BCJRROWER 



(Callianassa. subterranea) ..... 277 



210. THE COMMON SHRIMP (Crangon vulgaris) . . . . 278 



211. THE PRAWN (Palcemon serratus) ..... 279 



212. Dromia vulgaris . . . . . . . . 282 



213. THE HERMIT CRAB IN A WHELK SHELL .... 282 



214. THE LONG-ARMED CRAB (Corystes Cassivelaunus) . . . 287 



215. SPIDER CRABS AT HOME . . . . . .288 



216. THE THORNBACK CRAB (Maia Squinado) . . . . 290 



217. THE PEA CRAB (Pinnotheres pisum) .... 290 



218. THE COMMON SHORE CRAB (Carcinus mcenas) . . . . 291 



219. THE SHORE SPIDER . . .... 294 



220. THE LEG OF AN INSECT . . . . . . . 295 



221. TRACHEA OF AN INSECT, MAGNIFIED . . . . .296 



222. SEA-SHORE INSECTS . . . . . . 298 



223. MARINE BEETLES OF THE GENUS Bembidium . . . 802 



224. MARINE BEETLES ........ 803 



225. TRANSVERSE SECTION THROUGH THE BONY FRAMEWORK OF A 



TYPICAL VERTEBRATE ANIMAL ..... 806 



226. THE SEA LAMPREY . . . . . . 809 



227. THE PILCHARD . . . . . . . .810 



228. THE SKELETON OF A FISH (PERCH) . . . . 315 



229. THE INTERNAL ORGANS OF THE HERRING .... 316 



230. THE EGG-CASE OF THE DOGFISH . . . . . 319 



231. THE SMOOTH HOUND . . . . . . .320 



232. THE COMMON EEL . . . . . . . . 823 



233. THE LESSER SAND EEL ...... 826 



234. THE THREE-BEARDED EOCKLING . . . . . 827 



235. THE SNAKE PIPE-FISH . . 828 



