INDEX 



1043 



Underwings, 687 

 Ungues, 58 

 Unguiculus, 227 

 Unguis, 227 

 Urodus parvula, 632 

 Utetheisa, 700; U. bella, 700 



Vagina, 159 



Valentinia glandulella, 628 



Valvulae, 232 



Van der Weele, 284, 285, 306 



Van Duzee, E. P., 362, 844 



Van Dyke, E. C, 498 



Vanessa atalanta, 754; V. cardui, 755; 

 V. huntera, 755; V. virginiensis, 754 



Vanhornia eucnemidarutn, 921 



Vanhorniidae, 890, 907, 921 



Van Rees, 202 



Vas deferens, 156, 162 



Vasiform orifice, 438 



Vedalia cardinalis, 512 



Velia, 370 



Veliidae, 356, 357, 369 



Velvet-ants, 936 



Venomous setae and spines, 100 



Ventral diaphragm, 163; heart, 163; 

 sacs, 222; sympathetic nervous sys- 

 tem, 127; tube, 227 



Ventriculus, 11 1 



Verhoeff , 49 



Vermiform, 185 



Verruca, 578 



Verson, 114, 199 



Vertex, 39, 781 



Vertical triangle, 781 



Vespa, 958; V. arctica, 960; V. austraca, 

 960; V. consobrina, 960; V. crabro, 

 960; V. diabolica, 960; wings of, 949; 

 V. tnaculata, 960; nest of, 958, 959; 

 V. rufa, 960 



Vespidae, 891, 910, 948 



Vespinae, 907, 949, 958 



Vespoidea, 933, 890 



Vespoid-wasp, head and thorax of, 960 



Vespoid-wasps, 933 



Vispula, 960 



Viallanes, 47 



Vibrissae, 782 



Vibrissal angles, 781; ridges, 781 



Vice-reine, 760 



Viceroy, the, 759 



Viereck, H. L., 929 



Violet tip, 757 



Visual cell, structure of a, 137 



Vitellarium, 158 



Vitreous layer, 138 



Viviparity, 192, 193 



Viviparous insects, 191; adult agamic 

 females, 192 



Vogel, R., 155 



Volucella, 851 



Wagner, Nicholas, 192, 816 



Walker, E. M., 233, 252, 268 



Walking-sticks, 260 



Wall-bee, 984; nests of, 984 



Wanderer, the, 772 



Warble-flies, 866 



Wasps, social, 955; typical, 948 



Water-beetles, the crawling, 481 



Water-boatmen, 360, 361 



Water-buRS, giant, 365 



Water- measurers, 373 



Water-penny, 504 



Water-scavenger beetles, 485 



Water-scorpions, 364 



Water-striders, 370; broad-shouldered, 

 369 



Water-tigers, 483 



Wax, 990 



Wax-glands, 102; outlets of, 445 



Webworms, 648; burrowing, 611; cab- 

 bage, 648; garden, 648 



Wedge-shaped leaf-beetles, 533 



Weevil, black vine-, 539; strawberry-, 

 540 



Weevils, leaf-rolling, 538 



Weisman, A., 202, 203 



Wheat-midge, 819 



Wheat-sawfly-borer, 899 



Wheat straw- worm, 931 



Wheeler, W. M., 280, 524, 937, 938, 



944. 945 



Whirligig-beetles, 484 



White-ants, 273 



White, checkered, 747 



White flies, 437 



White fly, citrus, 440; greenhouse, 439; 



maple, 440; strawberry, 440 

 White, gray-veined, 747 

 White-grubs, 518 

 White marked tussock-moth, 680 

 White Mountain butterfly, 763 

 White-striped black, 667 

 Whites, the, 745 

 White-tipped moth, 676 

 Williams, F. X., 950, 952, 964 

 Williston, S. W., 852 

 Window-flies, 839 

 Window-winged moths, 653 

 Wings of the heart, 121, 162 

 Wings, 58; the development of, 182, 



195; specilization of, 212 

 Wing-veins, reduction of the number 



of, 65; the chief branches of the, 64; 



the increase of the number of, 68; 



the principal, 64 

 Winnertzia calciequina, 814 

 Wire-worms, 500 

 Witch-hazel cone-gall, 425 

 Witch-hazel-gall, the spiny, 426 

 Wohlfahrtia vigil, 871 

 WoUaston, 88 



