401 



Western blister beetle, extraordinary abundance 



in Cauada, 289. 

 Westwood, J. O., obituary of, 285. 

 Wheat-bead worm, in Kansas, 115. 

 stem maggot, in Canada, ref., 62. 

 stored, Geleebia cerealella injurious to, 325. 

 Wheeler, W. M., dissertation on insect embry- 

 ology, rev. of. 351. 

 White tiy, local name for Aleyrodes citri, 224. 

 grubs in Ohio, m., 296. 

 article on, ref., 75. 

 fungus diseases of, 70. 

 pest of sugar cano in Queensland, 45. 

 Wliitehead, Charles, insects injurious to cro])s in 



England, rev., 293. 

 Wickham, II. F., rev. of article by, 143, 271. 

 Wielandy,J.r.,ref.,356. 

 AVilcox, E. v., rev. of article by, 148. 

 Williston, S. W-., rev. of articles by, 28i). 

 Willistonia bieincta, characters of, 239. 



esuriens, <',haracters of, 239. 

 Willistoniidfe, characters of family, 239. 

 Wire-worms, arsenical ijoisons nseless against, 

 mm., 73. 

 in Ohio, m., 296. 

 plowing against, 74. 

 remedies experimented "witli, 74. 

 Woodpecker, hairy, feedingon parsnip web-vrorm' 

 107. 

 red cockatoo, enemy of boll worm, 242. 

 Wren, house, as insect destroyer. 266. 

 destroying tent-caterpillars, 266. 



Xenos, habits of, 133. 

 Xiphidium ensiferum, m., 352. 

 XO dust, as an insecticide, m., 73. 

 Xyleborus, males of, rev., 134. 



dispar, injuring fruit trees, 17.. 



perforans, notes on, 277. 



relation of cane disease to, 51. 



Xyleborus "'piceus''-^ pubescens. 51. 



pube.scens. correction, 51. 

 Xylocopa. Monodontomcrus parasitic on. Ml. 

 Xylomiges, revision of, ref., 140. 

 Xylotrechus nauticus, biologic notew on, 34, 35. 



Yellosv-legged clover weevil in England, m., 296. 

 fever tly, transmitter of contagion, nun., 210. 

 Vu<!ca baccata, pollinate<l by I'lounba yucca.sella, 

 304. 

 bn'vifolia, pollinated by I'ronuha syntluitica, 



304. 

 elata, pollinated l)y Pronubayuccasella, 304. 

 insects and yucca jiollination, art., 300. 



conclusions concerning. 308. 

 l)ollination, conclusions concerning, 308. 

 ru])icola pollinated by Pronuba yncca.sella, 



304. 

 whipplei, capable of certain amount of self 

 fertilization, 302. 

 description of, 301, 311. 

 distribution of, 311. 

 floral characteristics of, 302. 

 insects found upon, 312. 

 insects visiting flowers, 301. 

 on the pollination of, in California, art., 



:Jll. 

 pollinated bj^ Pronuba maculata, 312. 

 Yuccaborus, synopsis of, ref., 279. 



Z. 



Zebra caterpillar, food-plant.s of, 125, 287. 



in Cauada, ref., 62. 



on Pacific coast, 287. 



parasitised by Telenomusn. sp., 289. 



Trichogramma pretiosa, 289. 

 Zeuzera pyrina, not abundant in Euroiie, 204. 

 Zygicna minor, phieism in, 61. 

 Zygops, synopsis of, ref., 279. 



