566 
INDEX 
Tylaspis, 179 
Typhlocarcinus, 195 
Typopeltis, 312 
Tyroglyphidae, 466 n. 
Tyroglyphinae, 466 
Tyroglyphus, 464, 466, 481; 7. longior, 
466; TZ’. siro, 466 
Uliodon, 418 
Uloboridae, 350, 410 
Uloborinae, 470 
Uloborus, 352, 410; snare of, 352; U. 
republicanus, 411; U. walckenaerius, 
411 
Unguis, 319, 320 
Uroctea, 392; U. durandi, 392 
Urocteidae, 386, 392 
Urodacinae, 306, 307 
Urodacus, 307 
Uroplectes, 306 
Uropoda, 471 
Uropodinae, 471 
Uroproctus, 312 
Uropygi, 312 
Usofila, 393 
Valvifera, 727 
Vancoho, 362 
Vectius, 415 
Vejdovsky, 435 n. 
Vejovidae, 306, 30S 
Vejovis, 30S 
Vermiformia, 464 
Verruca, 89, 91 
Verrucidae, 91 
Vesicle, of Scorpion, 303 | 
Vinson, 349, 360, 362 
Virbius, 164; V. ‘acuminatus, 
habitat, 202 
Virchow, on human Pentastomids, 494 
Viscid globules, on Spider web, 347 
164; 
Waite, 13 
Walckenaer, 365, 386 n., 408 n. 
Walckenaera, 405; W. acuminata, 405 
Walcott, on appendages of Trilobites, 236 ; 
on their development, 238; on early 
forms of Eurypterids, 283 n. 
Wallace, 381 
Wall-spider, 369 
Warburton, C., on Arachnida, 295 f., 344 
n., 049 n., 378 n. 
Ward, on Reighardia, 495 
Wasps and Spiders, 368 
Water-mites, 460, 471, 472 
Water-spider, 357, 415 
Weismann, on Cladocera, 44, 49 
Weldon, W. F. R., on excretory glands, 
13 ; on Branchiopoda, 18 f.; on respira- 
tion in Carcinus, 189 
Westring, 327, 384 
Whale-louse, 502 
Whip-scorpions, 309 
White, Gilbert, 342 
Wilder, 366 
Willemoesia, 157 ; W. inornata, 158 
Winkler, 463 
With, 473 n. 
Wolf-spiders, 341, 356, 359, 369, 375, 
377, 381, 417 
Wood-Mason, 328 
Woods, H., on Trilobita, 219 f.; on 
fossil Xiphosura, 277 f.; on Euryp- 
terida, 281 f. 
Xanthidae, 797 
Xantho, 797 ; habitat, 198 
Xenobalanus globicipitis, 92 
NXiphocaris, 163 ; distribution, 210 
Xiphosura, 258, 259 f. ; classification, 
260, 276 ; fossil, 277 f.; affinities with 
Eurypterida, 292 
NXiphosura, 276 ; X. polyphemus, 276 
Xiphosuridae, 276 
Xiphosurinae, 276 
Xysticus, 412 ; X. cristatus, 412 ; X. pint, 
413 
Zacanthoides, 247 
Zaeslin, on the frequency of human Penta- 
stomids, 494 
Zeriana, 429 
Zilla, 409 ; Z. x-notata, 359, 409 
Zimirts, 396 
Zoaea, compared with Cumacea, 120 ; with 
Erichthus, 143 ; Calyptopis of Huph- 
ausia, 144; of Peneus, 160 ; of Serges- 
tidae, 161; of Porcellana, 169, of 
Birgus, 174; of Hupagurus, 179 ; of 
Corystes cassivelaunus, 182 
Zodariidae, 317, 399 
Zodarion, 399 
Zora, 397 ; Z. spinimana, 396 
Zoropsis, 415 
Zoropsidae, 415 
END OF VOL. 1V 
i 
Printed by R. & R. CLark, Limitep, Edinburgh. 
