INDEX 



Linerges, 133, 139. 



L. mercurius, i33, 139. 

 Lilies of growth, 344, 347. 

 Lineus marinus, 167. 



L. sanguineus, 168. 

 Lingual ribbon, 303, 340. 

 Lip, inner, 344. 



Outer, 344. 

 Lithocysts, 135. 

 Lithodes, 2-tO, 270. 



L. maia, 240, 270. 

 Lithodidae, 240, 270. 

 Littoral, 23. 



Species, 308. 



Zone, 30. 



Littorina, 9, 309, 311, 325, 338, 

 370. 



L. angulifera, 325, 372. 



L. irrorata, 3i5, 372. 



L. litorea, 8, 41, 42, 325, 371. 



L. palliata, 42, 325, 372. 



L. planaxis, 325, 373. 



L. rudis, 41, 42, 3^5, 371. 



Jy. scutulata, 325, 373. 

 Littorinella minuta, 12. 

 Littorinidae, 325, 338, 370. 

 Livona, 325, 362. 



L. pica, 268, 325, 362. 

 Lizzia, 120. 

 Lobata, 154, 156. 

 Lobsters, 240, 247, 250, 258, 259, 



261. 

 Loligo, 464, 467, 469. 



L. brevis, 464, 469. 



L. Pealei, 464, 469. 

 Lomentaria, 77, 85. 



L. Baileyana, 77, 85. 

 Lophophore, 190, 193. 

 Lophothuria, 228. 



L. fabricii, 228, 232. 

 Loripes, 406, 443. 



L. edentula, 406, 443. 

 Lottia, 324, 357. 



L. gigantea, 324, 357. 

 Lovenia, 217, 227. 



L. cordiformis, 217, 227. 

 Loxorhynchus, 241, 285. 



L. crispatus, 241, 285. 

 Lucapina, 324, 358. 



L. crenulata, 324, 358. 

 Lucernaria, 133, 136. 



L. auricula, 133, 136. 

 Lucina. 311, 406, 442. 



L. californica, 406, 443. 



L. dentata, 406, 443. 



L. floridana, 406, 442. 



L/. nuttallii, 406, 443. 



L. pennsylvanica, 406, 442. 



L. tigrina, 406, 442. 

 L/ucinidae, 406, 442. 

 Luidia, 204, 209. 



L. alternata, 204, 209. 



L. clathrata, 204, 209. 



L. senegalensis, 204, 209. 

 Lumbriconereis, 161, 179. 



L. tenuis, 161, 179. 

 Lunatia, 12, 309, 314, 325, 367. 



L. heros.10, 12, 44, 325, 367. 



L. lewisii, 325, 368. 



L. triseriata, 325, 367. 

 Lunnles, 224, 303, 418. 

 Lyngbya, 48. 



L. sestuarii. 50. 



L. ferruginea, 50. 

 L. majuscula, 50. 



M 



Macoma, 406, 444. 



M. baltica, 406, 445. 



M. nasuta, 406, 444. 



M. proxima, 406, 445. 



M. secta, 406, 444. 



M. tenta, 406, 445. 

 Macrocystis, 35, 63. 



M. pyrifera, 36, 70. 

 Macrura, 240, 258, 259, 272. 

 Mactra, 310, 406, 410, 446. 



M. lateralis, 406, 447. 



M. ovalis, 406, 447. 



M. similis, 406, 447. 



M. solidissima, 406, 446. 

 Mactridae, 406, 446. 

 Madreporic plate, 201, 203, 206, 



218. 



Maiidae, 241, 284. 

 Malacostraca, 239, 257. 

 Mandibles, 246, 258. 

 Mantle, 303, 316, 319, 328, 331, 



410. 



Mantle cavity, 303, 319, 336. 

 Mantle fusion, 412. 

 Margarita, 309, 325, 360. 



M. cinerea, 325, 360. 



M. helicina, 12, 44, 325, 360. 



M. undulata, 325, 360. 

 Margin, 417. 



Anterior, 417. 



Dorsal, 417. 



Posterior, 417. 



Ventral, 417. 

 Marginella, 311, 327, 399. 



M. apicina, 327, 399. 

 Marginellidae, 327, 399. 

 Marine invertebrates, 97. 

 Maxillae, 243, 246, 258. 

 Maxillipeds, 243, 246, 258. 

 Meckelia, 160, 169. 



M. ingens, 160, 169. 



M. rosea, 160, 169. 

 Mediaster, 204, 209. 



M. aequalis, 204, 209. 

 Megalops, 248, 273. 

 Meleagrina margaritifera, 



313, 430, 431. 

 Melita nitida, 290. 

 Mellita, 217, 225. 



M. testudinata, 217, 225. 

 Melobesia, 78, 96. 

 Melongena, 311, 327, 396. 



M. corona, 327, 396. 

 Membranaceous, 27. 

 Membranipora, 188, 192, 196. 



M. lineata, 188, 196. 



M. pilosa, 43, 188, 196. 



M. tenuis, 188, 197. 

 Menippe, 241, 280. 



M. mercenaria, 241, 280. 

 Meristomes, 242, 294. 

 Mesoderm, 101, 118. 

 Mesogloea, 62, 68. 



M. divaricata, 62, 68. 



M. virescens, 62, 68. 



Metalia, 217, 227. 



M. pectoralis, 217, 227. 

 Metameres, 243. 

 Metapodium, 376. 

 Metazoa, 101. 



Metridium marginatum, 42, 

 Microciona, 100, 107. 



M. prolifera, 100, 107. 

 Microcladia, 78, 93. 



M. borealis, 78, 93. 



M. Coulteri, 78, 93. 

 Millepora, 129. 



M. alcicornis, 117, 129. 

 Mitra, 313. 

 Mnemiopsis, 154, 157. 



M. Leidyii, 154, 157. 

 Modiola, 309, 405, 426. 



M. modiolus, 405, 428, 



M. nigra, 429. 



M. pi i cat u la, 405, 423. 



M. recta, 405, 429. 



M. tulipa, 405, 429. 

 Moera levis, 290. 

 Moina, 238. 

 Moira, 217, 226. 



M. atropos, 217, 226. 

 Molgula, 473, 475. 



M. arenata, 473, 476. 



M. manhattensis, 473, 475. 



M. pellucida, 473, 476. 

 Mollia, 18S, 197. 



M. hyalina, 188, 197. 

 Mollusca, 300, 305, 328. 

 Monoceras, 312, 326, 387. 



M. engonatum, 326, 388. 



M. lapilloides, 326, 388. 

 Monomyarian, 303, 430. 

 Monostroma, 26, 51, 55. 

 Monotocardia, 300, 325, 364. 

 Morphology, 20. 

 Moss -animals, 191. 

 Mother-of-pearl, 431. 

 Moulting, 248, 259, 263. 

 Mounting seaweeds, 16. 

 Mouth, 329, 333. 

 Mud-crabs, 12. 

 Muddy shores, 12. 

 Multivalve, 307. 

 Murex, 326, 331, 382. 



M. fulvescens, 383. 



M. pomum, 326, 383. 



M. rufus, 326, 382. 



M. tenuispina, 343, 347. 

 Muricea specifera, Plate 



XLVI. 



Muricidae, 326, 381. 

 Muricinae, 326, 381, 385. 

 Muscles, 248. 

 Musical sands, 2. 

 Mussel, great horse-, 428. 

 Mussels, 43, 321, 426. 

 Mya, 309, 407, 456. 



M. arenaria, 3, 42, 44, 311, 



407, 456. 

 Mycedium fragile, Plate 



XLV. 



Myidae, 407, 456. 

 Myrionema, 62, 68. 

 Mysis, 239, 257. 



M. sternolepsis, 239, 257. 

 Mytilidae, 405, 426. 

 Mytilus, 41, 309, 405, 426. 

 M. californicus, 405, 438. 



