

' 



Velum, *228 



\'cii;ili..n. 



Yrntnil siting i i >. ' 



\"c-ntral !ul.. 



Vrntriciilus. *ro4 



Yrrho. >, 466 



Vernaii 



Yrrworn. MM photntropism, 308; 469 

 l'o/M, nrsts 1. 1". *jSS; nlfact.iry organ 



-ilium, *S5; lasti- dips, *S;; tongue, 

 *86 



:l:r. 287 

 Yrstal, 394, 475 

 Yiallanrs. 435, 449, 448, 454 

 Yinal, 450 

 Vision, 05 



Yitrlliin- membrane, *i29 

 Yitm>us body, 95, *g6 

 'Voliicclla, mimicry by, *2io;predaceous, 271 

 Voss, F., 438 

 Voss, H. v., 459 



Wagner. F. v., 459 



Wanner, J., 433 



Wanner, N., 450 



Wahl, 455 



Walker, E. M., 434, 435 



Walker, J. J., 456 



Walking, 51 



Walking-stick, *i95 



Wallace, on mimicry, 203; 459, 460, 471 



Walsh, on losses through insects, 410; 424 



Walter, on mouth parts, 40; 436 



Walton, 428 



Warming, 474 



Warning coloration, 199 



Washburn, 425, 464 



Wasmann, on myrmecophilism, 297; 466, 

 469, 470 



Wasps, 287 



Wasteneys, 470 



Watase, 444 



Water, 382; circulation of, 384; contents 

 of, 383; depth, 386; pressure, 385; of 

 soil, 350; temperature of, 385; vegeta- 

 tion of, 386 



Watson, 474 



Wax, 413 



Wax, glands, 74; pincers, *228, 



\\Clth, 429 



I5i 338, 



'Cts, 410; 425, 

 460 472 



\\ ol'l* 



' 

 24 .'. 



\\Ciiilainl, 444 



, trmpn. 182; 



458, 459, 460, 469 



\\Vlrh, 456 



-447 



Wesche", 437 



Westvvood, on Brachinus, 73; 431, 432 

 Wheeler, on ants, 289, 297, 320; Malpighian 



tubes, 108; protective coloration, 178; 



trophallaxis, 301; tropisms, 302, 303, 



305, 306, 311; 439, 447, 448, 452, 453, 



467, 468, 469 

 White. F. B., 455 

 Whitman, 469 



Whymper, on distribution, 322; 472 

 Wickham, 347 

 Wielowiejski, von, 448, 450 

 Wilcox, 451, 463 

 Wilde, 446 

 Wilder, 267 



Will. F., on taste, 85; 444 

 Will, L., 450, 452 

 Williams, C. B., 434 

 Williams, T., 449, 455 

 Wilson, 453 

 Wilt, cucurbit, 219 

 \Vind, distribution by, 323, 368 

 Wings, 53; folding of, 56, *57; modifications 



<>f, 53; muscles of, *59; venation, *54; 



vibration, 57, *58, 91 

 Wistinghausen, von, 449 

 Witlaczil, 440, 447, 452, 454 

 Wodsedalek, 377 

 \\ollaston, on beetles of Madeira Islands, 



326 



Woodward, 45^ 

 Woodworth, 425, 438 

 Worker, ant, 289; bee, *282, 286; termite, 

 277, *j;S; wasp, 288 



Xanthophyll, as a pigment, i;r>. ios 



Xi-nonfiir<i . 



\iphidinni, stridulation of 



