INDEX. 



759 



pests of, in Canada, 547 ; control 

 of pests of, in Ceylon, 102, 236; 

 Aphis brass icae on, in Colombia, 

 80 ; pests intercepted on, in 

 Hawaii, 72, 535, 580 ; pests of, 

 in Russia, 562 ; pests of, in 

 U.S.A., 145, 308, 412, 578; 

 Phaonia irimaculata not injurious 

 to, 427 ; as a. trap-crop for 

 Murgantia histrionica, 388 ; as 

 a trap-crop for Phyllotreta, 88. 



Turnip, Swedish (Rutubaga), Chor- 

 topliila brassicae on, in Alaska, 

 189 ; Aphis pseudobrassicae on, 

 in U.S.A., 308. 



Turnip Apliis (see Aphis pseudo- 

 brassicae). 



Turpentine, and soap, against 

 Pieris, 570 ; in formulae against 

 Saissetia oleae and Eriosoma 

 lanigerum, 138, 139, 395; in 

 formula for adhesive banding, 

 213, 350 ; ineffective against 

 Oticrrhynchns ovatus, 579. 



Tussock Motli (see Hemerocampa). 



Twelve-spotted Cucumber Beetle 

 (see Diabrotica soror). 



Twice-stabbed Ladybird (see Chilo- 

 corus bivulnerus). 



Twig Borer of Lime (see Elaphidion 

 mite). 



Two-lined Chestnut Borer (see 

 Agrilus bilineatus). 



Two-Uned Locust (sec Melanoplus 

 bivittatus). 



Two-spotted Mite (see Tetranychus 

 telarius). 



Two-striped Grasshopj)er (see 

 Melanoplits bivittatus). 



Tychius aratus (Milk Vetch Weevil), 

 on Astragalus canadensis in 

 Minnesota, 463. 



Tychius lineellus, in Washington, 

 224. 



tycon, Scolytoplatypus. 



Tyleachiis semipenetrans, distribu- 

 tion of, 40. 



Tylenchus devastatrix, the cause of 

 bulb rot in Britain, 518 ; biono- 

 mics of, in Holland, 233, 441. 



Tylocoecus giffardi, sp. n., on Pan- 

 danus odoratissimus in Hawaii, 

 10. 



Tyloderma foveolata, on Oenothera 

 biennis in Minnesota, 463. 



Tyloderma fragariae, infesting straw- 

 berries in U.S.A., 446. 



tylodermatis, Eurytoma. 



Typha, Phopalosiphum nymphaeae 

 migrating from plums to, in 

 California, 409. 



Typha latifolia (Cat-tail Rush), 

 Aphids migrating to, in U.S.A., 

 229. 



typhaeus, Geotrupes. 



Typhlocyba rosae, causing whitespot 



of plants in Germany, 58. 

 Typhlocyba ulmi, causing whitespot 



of plants in Germany, 58. 

 typographus, Ips. 

 Typophorus nigritus, on sweet 



potatoes in Br. Guiana, 170. 

 Tyrannus rostratus, destroying Bys- 



dercus in West Indies, 581. 

 Tyroglyphus, destroying Aspidiotus 



uvae on vines in France, 377. 

 Tyroglyphus australasiae, attacking 



Plagiolepis long i pes in Java, 273. 

 Tyroglyphus (Aleurobius) farinae, 



bionomics of, in cheese, 516-518"; 



infesting hyacinths in Holland, 



538 ; in stored cereals and 



fruits in Russia, 455, 566. 

 Tyroglyphus Jcrameri, attacking 



Plagiolepis longipes in Java, 273. 

 Tyroglyphus lintneri (Mushroom 



Mite), bionomics of, and measures 



against, in U.S.A., 424. 

 Tyroglyphus longior, bionomics of, 



in cheese, 516-518; infesting 



stacked oats, 516. 

 Tyroglyphus sacchari, sp. n., on 



sugar-cane in West Indies, 314. 

 Tyroglyphus siro, bionomics of, in 



cheese, 516-518. 



u. 



Uganda, notice of Agaoninae in 

 figs in, 374 ; Atitestia variegata 

 on coffee in, 364 ; Coccid- 

 infesting Chalcidoidea in, 456 ; 

 insect pests in, 118 ; new scale- 

 insects from, 456, 457, 500, 501 ; 

 silkworms in, 21 ; plant pest 

 legislation in, 95 ; (see Africa, 

 East). 



ugandensis, Epitetrastichus. 



uJileri, Haltica ; Horistonotus. 



TJlex europaeus (Furse), Piesodorus 

 lituratus on, in Britain, 163. 



ulicis, Odontothrips. 



ulmi, Eriosoma ; Lepidosaphes ; 

 Typhlocyba. 



ulmiphilus, Neorhizobius. 



Ulmus (see Elm). 



Ulmus americana, food-plant of 

 Eriosoma pyricola in U.S.A., 450 ; 

 new root Aphid on, 335. 



Ulmus campestris, food-plant of 

 Eriosoma pyricola in U.S.A., 450 ; 

 new root Aphid on, 335. 



Ulmus campestris suberosa, Scolytus 

 pygmaeus in, in Istria, 95. 



iimbratica,, Eriocampa. 



umbrosus, Adoretus. 



undalis, Eellula. 



undecini -pustulatus, Mylloeerus. 



Underground Insects, methods of 

 studying, 216. 



