486 
M. edulis, 42, 43, 287, 405, 
427, 428. 
M. hamatus, 405, 428. 
N 
Naming of plants, 28. 
Nanomia, 130. 
N. cara, 117, 130. 
Narcomedus@, 117. 
Nassa, 3, 10, 12, 327, 335, 390. 
N. fossata, 327, 391. 
N. mendica, 327, 391. 
N. obsoleta, 10, 12, 327, 390. 
N. perpinguis, 327, 391. 
N. tegula, 327, 391. 
N. trivittata, 10, 11, 327, 390. 
N, vibex, 327, 391. 
Nassidz, 327, 390. 
Natica, 311, 325, 334, 367. 
N. canrena, 325, 368. 
N. clausa, 325, 368. 
N. heros, 367. ~ 
Naticidz, 325, 366. 
Nauplius, 248, 251. 
Nautilus, 328, 467. 
Navicula ostrearia, 435, 
Nekton, 23. 
Nemalion, 76, 79. 
N. multifidum, 76, 79. 
Nemalionacez, 76, 79. 
Nemathelminthes, 159, 161, 
170. 
Nematoda, 161, 170. 
Nematophore, 118. 
Nemerteans, 167. 
Nemertes, 160, 169. 
N. socialis, 10, 169. 
N. viridis, 160, 169. 
Nemertinea, 160, 167. 
Neopanopeus, 241. 
W. texana, 241, 281. 
Nephridia, 319. 
Nephridium, 303. 
Nephthydidez, 161, 177. 
Nephthys, 161, 178. 
N. ingens, 161, 178. 
N. picta, 161, 178. 
Nereida, 161, 176. 
Nereis, 161, 176. 
N. limbata, 161,177. 
N. pelagica, 161, 177. 
N. virens, 161, 177. 
Nereocystis, 63, 70. 
N. Litkeana, 35. 
Nerine, 161, 181. 
N. agilis, 161, 18r. 
N. coniocephala, 161, 181. 
Nerita, 325, 363. 
N. peleronta, 325, 363. 
N. tessellata, 325, 363. 
N. versicolor, 825. 
Neritidz, 325, 363. 
Neritina, 311, 325, 363. 
N. reclivata, 325, 364. 
N. viridis, 325, 364. 
Nervous system, 247, 320. 
Neverita, 309, 325, 368. 
N. duplicata, 11, 325, 367. 
N. recluziana, 325, 368. 
Nicothoé, 239, 250. 
INDEX 
Nidorella, 204, 210. 
N. armata, 204, 210. 
Nitophyllum, 77, 85. 
N, laceratum, 77, 85. 
N. punctatum, 77, 86. 
N. Ruprechteanum, 77, 86. 
Noah’s-ark shell, 426. 
Node, 303. 
Nodules, 344. 
Non-Calcarea, 100, 104, 106. 
Norrisia, 312. 
Nostocacee, 48. 
Nucula, 309, 405, 422. 
N. proxima, 405, 422. 
Nuculida, 405, 421. 
Nudibranch, 328, 349, 353, 
Nudibranchiata, 300, 324, 352. 
Nullipores, 31, 147. 
Nummulites, 22. 
O 
Obelia, 125. 
O. commissuralis, 116, 125. 
Oceania, 125. 
O. languida, 116, 125. 
Ocinebra, 326, 384. 
O. circumtexta, 385. 
O. interfossa, 326, 385. 
O. lurida, 326, 384. 
O. poulsoni, 326, 384. 
Octopi, 315. 
Octopoda, 301, 464, 468. 
Octopus, 464, 468, 
Oculina, 141, 148. 
Ocypoda, 11, 241, 282. 
O. arenaria, 241, 274, 282. 
Ocypodide, 241, 282. 
Odontophore, 303. 
Oliva, 10, 311, 313, 327, 334, goo. 
O. literata, 327, 400. 
Olivella, 10, 312, 327, 400. 
O. biplicata, 327, goo. 
O. boetica, 327, gor. 
O. mutica, 327, 400. 
Olividz, 327, 400. 
Ommastrephes, 464, 468, 469. 
O. illecebrosus, 464, 469. 
Opercula, 193. 
Operculum, 254, 303, 331, 355. 
Ophiocoma, 213, 216. 
O. zthiops, 213, 216. 
O. Alexandri, 213, 216. 
O. riisei, 213, 216. 
Ophiopholis, 213, 215. 
O. aculeata, 43, 213, 215. 
Ophiothrix, 213, 216. 
O. angulata, 213, 216. 
Ophiurida, 213, 215. 
Ophiuroidea, 200, 213, 214. 
Opisthobranchiata, 300, 324, 
349, 350. 
Oral, 202. 
Surface, 201. 
Orbits, 243. 
Orchestia, 11, 43, 242, 289. 
O. agilis, 242, 289. 
Organ-pipe coral, 151. 
Organs of feeling, 249. 
Orifice, 190, 412. 
Oscillaria, 48, 49. 
Osphradium, 303, 339. 
Ossicles, 201, 203, 218, 
Ostracoda, 238. 
Ostrea, 405, 410, 435. 
O. edulis, 435. 
O. frons, 405, 435. 
O, lurida, 405, 435. 
O. virginica, 310, 405, 435. 
Ostreidz, 405, 432. 
Otocysts, 165, 303. 
Otter Cliffs, 43. 
Ovalipes, 241, 276. 
O. ocellatus, 241, 276. 
Ovicell, 190, 193. 
Oyster-crab, 287. 
Oyster-culture, 432. 
Oysters, 321, 432. 
Pearl-, 480, 481, 432. 
P 
Pacific faunal divisions. 
Pacygrapsus, 241, 282. 
P. crassipes, 241, 282. 
Padina, 63, 71. 
P. pavonia, 63, 71. 
Paguridz, 240, 264. 
Pagurus, 240, 267. 
P. bernhardus, 240, 267. 
P. longicarpus, 240, 267. 
P. pollicaris, 240, 267. 
Palzmonetes, 240, 260. 
P. vulgaris, 240, 260. 
Palzemon vulgaris, 260. 
Pallial line, 203, 418, 
Sinus, 303, 419. 
Palps, 176, 416. 
Palpus, 258. 
Panamic province, 312. 
Pandora, 407, 463. 
P. trilineata, 407, 463. 
Pandoridz, 407, 463. 
Panopeus, 12, 28r. 
Pantopoda, 242, 296. 
Panulirus, 240, 263. 
P. americanus, 263. 
P. argus, 240, 263. 
P. interruptus, 240, 263. 
Papillaceous, 303. 
Paraphyses, 72. 
Parapodia, 171. 
Parenchyma, 26. 
Parypha, 123. 
P. crocea, 116, 123. 
Peachia, 144. 
Pearls, 480, 431. 
Pecten, 309, 405, 435. 
P. equisulcatus, 405, 438. 
P, dislocatus, 405, 437. 
P, hastatus, 405, 438. 
P. irradians, 405. 437. 
P. islandicus, 405, 436. 
P. jacobius, 436. 
P. magellanicus, 287, 405, 
436. 
P. tenuiscostatus, 436. 
Pectinidz, 405, 435. 
Pedal opening, 412. 
Pedata, 228, 231. 
Pedicellariz, 201, 205, 219. 
Pedicellina, 189, 198. 
P. americana, 189, 198. 
