INDEX 



347 



Udenocera, 137 

 Uranotagnia, 96, 104 

 Uropodidse, 267, 286 



" Variety," definition of, 4 

 Veins of wings of Diptera, 38-40 

 Vejovidas, 297 

 Velvet-mites, 286, 287 

 Venation of gadfly, 39 



of house-fly, 38 



of mosquito, '9, 40 

 Venom of bees and wasps, 225 



of centipedes, 307 



of scorpions, 296 



of spiders, 299 

 Vermileo, 139 

 Verrallina, 102 

 VibrissEe of Diptera, 40 



Wallace on Geographical Distri- 

 bution, 6 

 Warburton, C, 214 

 Wasps, 227 

 Wasp-venom, 225 

 Water boatmen, 210 

 Water mites, 293 

 Water scorpions, 210 

 Water-striders, 210 

 Weevils, 239 



Wenyon, Dr, 109 



Whirligig beetles, 235 



"White Ants," 250 



Williston, S. W., 46, 122, 131, 135 



148 

 Wing of gadfly, 39 



of Glossina, 163 



of house-fly, 38 



of Insecta generally, 25 



of mosquito, 39, 40, 50 

 Workers, of bees, 226 



of Hymenoptera generally, 222 



of termites, 250 



Xenopsylla, 194, 195 

 Xenopsylla cheopis, 190, ig6 

 Xiphosura, 264 



Yellow fever and Stegomyia, 54, 



97, 109 

 Yellow-fever fly, 130 



ZOOGEOGRAPHICAL Provinces of 



Huxley, 4 

 Zoogeographical Regions of Sclater 



and Wallace, 6 

 Zoogeographical Sub-Provinces of 



Huxley, S 



