INDEX 
Melanophora, 397 
Mena-vodi, 362 
Menge, 319, 368, 385 
Menneus, 410 
Mermerus, 449 
Merostomata, 258, 259 f. 
Mertens, Hugo, 524 n. 
Mesochra lilljeborgi, 62 
Mesonacis, 247; M. asaphoides, larva, 
240 
Mesosoma, of Arachnida, 256 ; of Limulus, 
260, 263; of Hurypterus, 288; of 
Scorpion, 302 
Mesothelae, 356 
Meta segmentata, 408 
Metamorphosis, of Cirripedia, 80; of 
Sacculina, 97 ; of Epicarida, 130, 133, 
135; of Squilla,142, 143; of Huphausia, 
144; discovery of, in Decapoda, 153 ; 
of Lobster, 156; of Crayfish, 157 ; 
of Peneus, 159 ; primitive nature of, in 
Macrura, 161; of Loricata, 165, 166; 
of Hermit-crab, 179; of Brachyura, 
181, 182; of Dromiacea, 182; of Trilo- 
bites, 239; of Limulus, 275; of 
Pseudoscorpions, 435; of  Acarina, 
462; of Pentastomida, 493 f.; of 
Pyenogons, 521 f. 
Metasoma, of Arachnida, 256 ; of Limulus, 
260, 263, of Hurypterus, 289; of 
Scorpion, 303 
Metastigmata, 467 
Metastoma, of Trilobites, 234 ; of Euryp- 
terida, 287, 292 
Metazoaea, 182 
Metopobractus rayi, 405 
Metopoctea, 452 
Metridia, 59; M. lucens, distribution, 293 
Metronax, 398 
Metschnikoff, 435 n. 
Miagrammopes, 411 
Miagrammopinae, 4/7 
Micaria, 397 ; M. pulicaria, 396, 397 ; 
M, scintillans, 372 
Micariinae, 397 
Micariosoma, 397 
Michael, 460, 461, 462, 466 n, 
Micrathena, 410 
Microdiscus, 225, 231, 245 
Microlyda, 486 1. 
Micrommata, 414; 
414 
Microneta, 406 
Microniscidae, 730 
Migas, 387 
Miginae, 387 
Milne-Edwards, 504 
Milnesium, 480, 485 ; M. alpigenwm, 487 ; 
M. tardigradum, 487 
Miltia, 396 
Mimetidae, 471 
Mimetus, 411; M. interfector, 368 
M. virescens, 413, 
552% 
Mimiery, in Spiders, 372 
Mimoscorpius, 312 
Miopsalis, 448 
Misumena, 412; M. vatia, 371, 373, 412 
Mites, = Acarina, ¢.v. 
Moggridge, 354, 355 n. 
Moggridgea, 387 
Moina, 37, 52; reproduction, 46, 47, 48, 
49; M. rectirostris, 46, 47, 52 
Mole-crab, 170 
Monochetus, 465 
Monolistra (Sphaeromidae), habitat, 211 
Monopsilus, 54 
Monostichous eyes, 301 
Monstrilla, 64 
Monstrillidae, 63 
Morgan, 517, 518, 521 
Mortimer, Cromwell, on Trilobites, 221 
Mosaic vision, 147 
Moseley, 523 
Moulting (Eedysis), 154, 155, 225, 338 
Mouth, of Trilobites, 234 
Mud-mites, 472 
Miiller, F., on Tanaids, 123 
Miller, O. F., on position of Tardigrada, 
483 
Munidopsis, 170; eyes, 149; MW. hamata, 
168 
Munnopsidae, 725 
Munnopsis typica, 127 
Murray, 455 
Murray, J., on British Tardigrada, 485 
Muscular system, in Tardigrada, 481 ; in 
Pentastomida, 490 
Mygale, 337, 3S6 n., 389 
Mygalidae, = Aviculariidae, qg.v. 
Myrmarachne formicaria, 42 
Myrmecium, 397 
Myrtale perroti, 387 
Mysidacea, 1/8 
Mysidae, 113, 114, 229; habitat, 201; 
relation to Webalia, 112 
Mysis, 120 ; maxillipede, 10, 11 ; resem- 
blance to Paranaspides, 117 ; M. oculata, 
var. relicta, 120, 210; M. vulgaris, 
118 
Mysis-larva, of Lobster, 156; of Peneus, 
161 
Mytilicola, 68 
Nanodamon, 313 
Nauplius, of MHaemocera danae, 64; of 
Lepas fascicularis, 81; of Sacewlina, 
97; of Huphausia, 144; an ancestral 
lacval form, 145; of Peneus, 159 ; com- 
pared with Protaspis, 239 
Nebalia, 111, 112, 114; segmentation, 6, 
7; limbs, 10, 11; relation to Cumacea, 
120 ; compared with Trilobita, 242 ; 1. 
geoffroyt, 111 
Nebo, 307 
Neck-furrow, 224 
