626 



INDEX 



Vermipsylla alakurt, 523, 526 

 Yerson, on rudiments of wings, 328 

 Vertebrates, larvae of Diptera, attacking, 



506, 510, 512, 514, 514, 517, 520; 



tick-fleas on, 526 

 Vespa, nests of, 79, 83 ; V. austriaca, 81, 



88 ; V. crabro, 81 ; V. germanica, 79 

 Yespidae, 78 

 Viviparous, Aphids, 583 ; fly, 506, 511, 



513, 518 f. ; moths, 430 ; Staphylinidae, 



227 

 Voice see Song, Sound-organs, Stridula- 



tion 

 Volucella, 500 ; F. bombylans, 441 



Wagner, on morphology of fleas, 523 n. ; 



on paedogenesis, 460 

 Walker, J. J., on Halobates, 552 

 Wallace, on flight of Hesperiidae, 364 

 Walsingham, Lord, on Tortricidae, 427 

 Walter, on mouth of Lepidoptera, 308, 



310 



Wandering ants, 175 f. 

 Wanzenspritze, 536 

 Wasmann, on Ants'-nest Insects, 181 n., 



183 ; on Lomechusa, 142, 226 ; on 



Weismanu, 143 

 Wasps, 71 f. 



W T asps'-nest, beetle, 235 ; Insect, 268 

 Water-scorpion, 563 

 Wax, 65, 575, 576, 597 

 Wax-glands, 589 

 Wax-hairs, 580 



Wedde, on mouth of Hemiptera, 535 

 Weeping-trees, 577 

 Weevil, biscuit-, 247 ; pea-, 277 

 Weinland, on halteres, 448 

 Wet- and dry-season forms, 336 

 Whirligig- beetle, 215 

 White wax, 576, 597 

 Whittell, on Pelopaeus and Larrada, 117 

 Wielowiejski, on luminous organs, 250 

 Wing-cases, of beetles, 186, 270 



Wing, of bugs, 539 ; of Diptera, 447 ; 



of Lepidoptera, 315 f. ; development of, 



328 ; structure of, 329 

 Wingless see Apterous 

 Wingless and winged Aphids, 584 

 Wing-nervures see Nervures 

 Wing-rib, 330, 333 

 Wing-veins see Nervures 

 Winter-gnats, 473 

 W T inter-moth, 414 

 Winter-mother, 586 

 Wire-worm, 258 

 Wood-ant see Formica rufa 

 Wood-leopard moth, 309, 395 

 Woodpecker, Diptera in, 506 

 Workers, 54, 66, 67, 79, 85, 132, 140 

 Worm-eaten furniture, 248 



Xantharpyia straminea, parasite of, 521, 



522 



Xenos, 303 ; X. rossii, 299, 301 

 Xestobium, 248 

 Xylocopa, 32, 34, 70 ; submentum of, 14 ; 



X. chloroptera, 34 ; X. violacea, 33 

 Xylodiplosis, 458, 459 

 Xylophagidae, 479 

 Xylophaginae, 480 

 Xylophilidae, 266 

 Xylotrupes gideon, 199 



Yellow-fever-fly, 464 

 Yolinus, 558 

 Young carried, 556 

 Yucca-moth, 432 



Zabrus, 205 



Zaitha anura, 566 



Zelotypia staceyi, 396 



Zemioses celtis, 296 



Zeuzera aesculi, 309, 395 



Zeuzeridae, 395 



Zygaenidae, 369, 388, 390, 392, 394 



Zygia, 253 



END OF VOL. VI 



Printed by R. & R. CLARK, LIMITED, Edinburgh. 



