INDEX. 



749 



food-plants of, in Switzerland, 

 367 ; measures against, in plum 

 in Britain, 436, 509. 



Xyleborus fornicatus (Shot-hole 

 Borer of Tea), bionomics and 

 control of, in Ceylon, 88, 128, 

 314, 315, 434, 539^, 540. 



Xyleborus morivoreUa, in mulberry 

 in Formosa, 175. 



Xyleborus parvulus, attacking rub- 

 ber in East Indies, 429, 430 ; 

 relation of, to Ustiilina zonata 

 in Malaya, 277. 



Xyleborus perforans, in cacao in 

 Belgian Congo, 79. 



Xyleborus saxeseni (see X. xylo- 

 graphus). 



Xyleborus xylographtis (Lesser Shot- 

 hole Borer), bionomics and 

 distribution of, in conifers, 266 ; 

 in Britain, 509 ; measures against 

 in pears in California, 384 ; in 

 apple in Switzerland, 367. 



Xylina anfennata, Metearus versi- 

 color ovipositing on, in U.S.A., 

 513. 



Xylobiops basilaris (Red- shouldered 

 Shot -hole Borer), in forest trees 

 in U.S.A., 227, 451. 



xylographus, Xyleborus. 



Xylonites praeusius, on evergreen 

 oak in France, 477. 



Xylopsocus gibbicollis, boring in 

 lead in Australia, 141. 



xylostei, Hyadaphis ; Prociphilus ; 

 Siphocoryne (Aphis) (see 8. 

 pasUnacae). 



Xyloterus domesticus, in forests in 

 Germany, 8. 



Xyloterus lineatus, in Sweden, 147. 



Xyloterus signatus, bionomics of, 

 in forests in Germany, 8. 



Xylothrips gibbicollis (see Xylop-_ 

 socus). 



Xylotrechus, in sal in India, 519. 



Xylotrechus aceris, sp. n., in maples 

 in U.S.A., 129. 



Xylotrechus annosus, in poplar in 

 California, 397. 



Xylotrechus insignis, in willow in 

 California, 397. 



Xylotrechus obliteratus (see X. insig- 

 nis). 



Xylotrechus quadrimaculatus, X. 

 aceris confused with, in U.S.A., 

 129. 



Xylotrechus quadripes (Coiiee Borer) 

 measures against, in India, 74. 



Xylotrechus undulatus, in conifers 

 in California, 397. 



Xylotrupes gideon (australicus), on 

 sugar-cane in Australia, 166; 

 food-plants of, in Java, 446. 



Xystrocera globosa, on Acacia lebbelc 

 in Egypt, 50. 



(C569) 



Y. 



Yakman Ant (see Eciton burchelli). 



Yam (see Dioscorea). 



Yarrow, Philaenus spumarius on, 



in Maine, 12 ; (see Achillea 



millefolium). 

 Yellow Aphis (see Sipha flava). 

 Yellow Clothes Moth (see Tineola 



biselliella). 

 Yellow Clover Aphis (see Callip- 



terus ononidis). 

 Yellow Dent Corn (see Zea inden- 



tata). 

 Yellow Fever, 492. 

 Yellow Flannel Moth (see Lagoa 



crispata). 

 Yellow House Ant (see Mono- 



morium pharaonis). 

 Yellow Mite (see Tarsonemus trans- 



lucens). 

 Yellow Pine (see Pinus ponderosa). 

 Yellow-necked Caterpillar (see 



Dot ana minis tra). 

 yesonicus, Promachus. 

 ypsilon, Agrotis. 

 Yucatan, Schistocerca urichi in, 462. 



z. 



Zabrotes pectoralis (see Spermo- 



phagus). 

 Zabrus, 96. 

 zachrysa, Gracilaria. 

 zaddachi, Sterictiphora. 

 Zagrammosoma multilineatum, ]>ara- 



site of Leucoptera coffeella in 



Porto Rico, 104. 

 Zama^ra albofasciaria, urticating 



hairs of Aretornis chrysorrhoea, 



causing injury to, in .Japan, 502. 

 Zanzibar, misceilaneous insect pests 



in, 128, 276 ; scale-insects from, 



85, 86. 

 Zaomnioencyrtus poeta, sp. n., para- 

 site of a Psyllid in Australia, 35. 

 Zea indentata (Yellow Dent Corn), 



hybrid between Euclane.a mexi- 



cana and, immune to attacks of 



Aphids in U.S.A., 30. 

 Zea mays (see Maize). 

 zeae, Achatodes. 

 Zebra caterpillar (see Ceramica 



picta). 

 zebra, Otiorrhynchus. 

 zebrinum, Lecavium. 

 seellus, Crambus. 

 Zelus bilobus, natural enemy of 



Anomis erosa in U.S.A., 108. 

 zephyria, Rhagoletis (see B. porno- 



nella). 

 Zeuzera, on cacao in Dutch E. 



Indies, 349. 

 Zeuzera aescuU (see Z. pyrina). 



