4(3 



PLANT INDEX. 



AVorinseed, Aphis sossypii feerling on, VII, .'513. 

 Wormwood, dry, Sitodrepa paiiicea attacking, VII, 

 32. 



X. 



Xanthiuni, dipterous larva in seeds, II, .S33. 

 insects afTetting, III, 312. 

 strumariuni, Gortyna nitela in. II, 375. 



RhodobaMuis 13-punctatus on, I, 198 ; IV, 

 159. 

 Syphocoryne xanthi on, ref.. Ill, 312. 

 Xautlioxyluni, I'apilio oxynius feeding on. III, 32. 



Yam, Ilomalota sp. attacking, VI, 218. 

 Yncca aloifolia, fruit edible, IV, .359. 



pollination of, I, 368. 

 angustifolia, pollination of, I, 369. 



Pronuba yuccasella pollenizing, IV, 369. 



Tragidion armatum on, V, 39. 

 Anthonomus signatus on, V, 175. 

 baocata, edible, IV, 359. 



pollinated by Pronuba yuccasella, V, 304. 



Pronuba on, IV, 371. 

 brevifolia, arboreal form, IV, 360. 



Pronuba paradoxa pollenizing, I, 372. 



synthetica pollenizing, IV, 370 ; V, 304. 

 Cwnophanes prodoxi and host on, II, 350. 

 elata, pollinated by Pronuba yuccasella, V, 304. 

 fertilization of, IV, 74, 359. 

 filamentosa, pollination of, I, 368. 



Pronuba from capsules of, VI, 376. 



Pronuba yuccasella on, IV, 369. 



structure of, IV, 359. 

 filifera, arboreal, IV, 360. 



Yucca filifera, Pronuba on, IV, 371. 

 Lecanodiaspis n. sp. on, ref., V, 65. 

 Megathynius yuccij and i)arasite on, III, 15. 

 nectar apparatus of, IV, 366. 

 Prodoxus larva; in all species, IV, 372. 

 Pronuba species on, I, 367; II, 382; IV, .371. 

 regal tree = Y. filifera. 

 rupicola, pollinated by Pronuba yuccasella, V, 



304. 

 Scyphophorus infesting, I, 199. 

 Yuccaborus infesting, I, 199. 

 treculiana, special Pronuba on, IV, 371. 

 whipplei, etc., Caenophaues koebelei and hosts 



reared from, II, 350. 

 whipplei, capable of certain amount of self-fer- 

 tilization, V, 302. 



description of, V, 301, 311. 



distribution of, V, 311. 



floral characteristics of, V, 302. 



insects found on, V, 301,312. 



Pimpla notanda bred from. III, 462. 



pollination of, V, 311,312. 



Pronuba maculata pollenizing, I, ,372; IV, 

 367, 370. 



Pseudococcus yuccfe feeding on, A'l, 40. 



Scyphophorus yucc« on, V, 35. 



Zea mays, Diatra\a saccbaralis feeding on, IV, 103. 



Toxoptera graminum feeding on, l\, 245. 

 Zamia mexicana, Diaspis lanatus on, A^, 288. 



integrifoia, Euni«us atala on, I, 38, 39. 

 Zanthoxylum fraxinium, red spider on, VI, 269. 

 Zingiber officinale, dry, Sitodrepa panicea attacking, 

 VII, 32. 



