558 
INDEX 
Nemastoma, 4438, 451; NN. chrysomelas, 
452; N. lugubre, 452 
Nemastomatidae, 451 
Nematocarcinus, 163 
Nemesia, 888 ; N. congena, 355, 357 
Neolimulus, 278, 279 
Neoniphargus, distribution, 216 
Neopallene, 537 
Nephila, 408; N. chrysogaster, 380; N. 
pluinipes, 366 
Nephilinae, 408 
Nephrops, 154; N. andamanica, distribu- 
tion, 205; WN. norwegica, 205 
Nephropsidae, 754 ; resemblance to Dromi- 
acea, 184 
Neptunus, 191; N. sayi, habitat, 202 
Nereicolidae, 73 
Nervous system, of Crustacea, 5; of 
Branchiopoda, 30; of Sqwilla, 142; of 
Arachnida, 257 ; of Limulus, 270; of 
Scorpions, 805; of Pedipalpi, 311; of 
Spiders, 332, 333; of Solifugae, 428 ; 
of Pseudoscorpions, 434 ; of Phalangidea, 
445, 446; of Acarina, 460; of Tardi- 
grada, 482; of Pentastomida, 491; of 
Pyecnogons, 516 
Neumann, 470 
Nicodaminae, 476 
Nicodamus, 416 
Nicothoe astaci, 68 
Nileus, 229, 249; N. armadillo, eye, 228 
Niobe, 249 
Niphargoides, 138 
Niphargus, 137, 138; distribution, 216 ; 
N. forelii, 188; N. puteanus, habitat, 
209, 210 
Nogagus, 73 
Nops, 315, 336, 395 
Norman, A. M., 540 
Notaspis, 467 
Nothrus, 468 
Notodelphys, 66 
Notostigimata, 473 
Nyctalops, 312 
Nycteribia (Diptera), 526 
Nymph, 463 
Nymphon, 503, 536; N. brevicaudatum, 
507, 536 ; WV. brevicollum, 511, 521; N. 
brevirostre, 503, 504, 506, 508, 509, 
541, 542; N. elegans, 506, 542; WN. 
Femoratum, 5413; N. gallicum, 541; N. 
gracile, 511, 541, 542; N. gracilipes, 
542; WN. grossipes, 541;,N. hamatum, 
512; N. hirtipes, 542; N. horridum, 
537; NV. johnstoni, 541 ; N. leptocheles, 
542; WN. longitarse, 541, 542; UN. 
macronyx, 542; N. macrum, 542; N. 
minutum, 541; N. miatum, 541; WN. 
pellucidum, 541; N. rubrum, 541, 542; 
NV. serratum, 542; N. simile, 541; N. 
sluiterit, 542; N. spinosum, 541; WN. 
stenocheir, 542; N. strimii, 509, 541 
Nymphonidae, 536 
Nymphopsinae, 535 n. 
Nymphopsis, 534, 5385 n. 5 
534; WV. muscosus, 534 
N. korotnevi, 
Obisiinae, 436, 437 
Obisium, 4386, 438 
Ochyrocera, 393 
Octomeridae, 97 
Octomeris, 91 
Ocyale mirabilis, 416 
Ocypoda, 194, 196 ; habitat, 198 ; distri- 
bution, 201 
Ocypodidae, 196 
Oecobiidae, 386 n., 392 
Occobius, 892; Oe. maculatus, 392 
Oehlert, on facial suture of Tvrinucleus, 
226 
Ogovia, 448 
Ogygia, 249 
Oiceobathes, 535 
Oithona, 61; O. nana, 203 ; O. plumifera, 
203 
Olenelloides, 247 ; O. armatus, 247 
Olenellus, 225, 227, 232, 286, 247 
Olenidae, 247 
Olenus, 232, 247 ; O. truncatus, 248 
Oligolophus, 450; O. agrestis, 450; O. 
spinosus, 441, 450, 451 
Olpium, 436, 437 ; O. pallipes, 437 
Ommatoids, 310, 311, 312 
Oncaea, 69 ; O. conifera, phosphorescence, 
60 
Oncaeidae, 69 
Oniscoida, 728 
Oniscus, 129 
Ononis hispanica, Spiders on, 419 
Onychium, 324 
Oomerus stigmatophorus, 539 
Oonopidae, 336, 393 
Oonops, 394; O. pulcher, 366, 394 
Oorhynchus, 507, 5385; O. aucklandiae, 
535 
Oostegites, of Malacostraca, 114 
Operculata, S9, 91 
Ophiocamptus (Moraria), 62; O. brevipes, 
62 
Opilioacarus, 454, 473; O. arabicus, 473 ; 
O. italicus, 473; O. platensis, 473; O. 
segmentatus, 473 
Opiliones (= Phalangidea, q¢.v.), 440 
Opisthacanthus, 307 
Opisthoparia, 244 
Opisthophthalinus. 307 
Opisthothelae, 386 
Opopaea, S94 
Orchestia, 139 ; hermaphroditism, 104 ; O. 
gammarellus, 137, 139 ; habitat, 211 
Orchestina, 394 
Orihata, 467 
Oribatidae, 457, 458, 459, 460, 462, 467 ; 
_anatomy, 459 
