Byssus of Mussel, 168, 170, 177, 184. _Beröe_, 210. _Bêches de mer_, 31. Brittle Star-fishes, 277. Bird's foot Sea-star, 285. Blenny (Smooth), 71, 104, 236, 336, 341, 365. Blenny (Viviparous), 346. Butter fish, 347. _Brachyura_ (crabs, &c.), 69, 133. Buckie, 93. Barnacles, 98, 146. Barnacle geese, 150. Boring Acephaia, 251. Bivalves, 122, 167, 282, 363. Bearded rockling, 346. _Cilia_, 35, 147, 214. _Coryne_, 41. Crabs, 67. _Cancer Pagurus_ (Edible crab), 67, 69, 128. _Carcinus mænas_ (Common Shore crab), 67, 78, 120, 127, 167, 239. Common Whelk, 94. Common Cockle, 84, 106, 239. Cray fish, 128, 131. _Crangon vulgaris_ (Common Shrimp), 139. _Cestum veneris_, 209. _Cydippe pileus_, 210. _Cyanea capillata_, 218. _Comatula rosacea_, 275. Crinoid Star fishes, 275. Cross fish, 280. Cushion stars, 285. Cake Urchin, 300. _Chondrus crispus_ (Irish moss), 101, 123. _Cirri_, 147. _Cetacea_, 205. Chiton, 226. _C. offinalis_, 285. _Ciliograde acalephæ_, 209. Common Sea cucumber, 305. Doris, 223, 363. Doris (Spawn of), 226. Diminutive Sucker-fish, 350. _Decapoda_ (ten-footed crustacea), 69, 85, 115. _D. sanguinea_, 78, 118, 368. Dorsibranchiate annelidans, 155. Devil's hand, 279. Dulse, 310. Exuviation of Crabs, &c., 85, 113, 120, 132. Exuviation of Prawns, &c., 139. Exuviation of Barnacles, 147. _Eolis_, 223. _Eolis_, (Spawn of) 228. _papillosa_, 228. _Echinus_, 291. _sphæra_, 297. Entomology, 28. Egg Urchin, 297. _Foraminifera_, 24, 30. Fan-amphitrite, 161, 163. Fishes 329. Five-fingers (Star-fish), 281. Gulf stream, 206. Girdle of Venus, 209. Green-pea urchin, 299. Gunnel-fish, 346. Goby (one-spotted), 309, 348. Goby (two-spotted), 348. _Gasterosteus aculeatus_, 352. Golden willow, 87. _Hyas araneus_, 80. Hermit crabs, 94, 105, 108, 130. _Hydra tuba_, 213. _Hydra gelatinosa_, 213. Hyaline stylet, 239. _Holothuriadæ_, 303. _Infusoria_, 33, 43, 227. _Iridea edulis_, 74, 236. Irish Moss, 101. Jelly fish, 203. _Kerona silurus_, 35. _Lepas anatifera_ (Ship barnacle), 148, 150. Laminated nereis, 155. _Luidia fragillissima_, 285. _Lepus marinus_, 309. Lettuce Ulva, 180, 364. Limpet, 81, 98. Lobster crabs, 94. Lily stars, 271. Lobster (The), 131, 290. _L. digitata_ (Oar weed), 277. Lingthorn, 285. Lump sucker, 347. _Maia squinado_ (Spider crab), 79, 80, 82, 167. Mussel (_Mytilus edulis_), 82, 122, 167, 363. _Medusæ_, 203, 210, 216. _Modera formosa_, 217. Montague Sucker-fish, 349. Marine Aquariæ, 357. _Macroura_ (as Lobsters), &c. _Nereis_, 155, 158. Nudibranchiate gasteropoda, 226. _Ostrea edulis_ (oyster), 81. _Ophiuræ_, 277. _texturata_, 277. _albida_, 277. _Ophiocoma rosula_, 279. _Paramecium caudatum_, 35.