822 



INDEX. 



Tylenchtdus semipenetrans (Citrus 



Root Nematode), measures 



against, in Florida, 459 ; dis- 

 tribution of, 543. 

 Tylenchiis, measures against, in 



banana in Queensland, 151. 

 Tylenchus acutocandatus, in coffee 



and banana, 543. 

 Tylenchus angusta, in rice in Bengal, 



543. 

 Tylenchus bifonnis, in sugar-cane in 



Hawaii, 543. 

 Tylenchus devastatrix (see T. dipsaci). 

 Tylenchus dipsaci [devastatrix) (Stem 



Eelworm), in lucerne in Brazil, 



361 ; in Holland, 96, 133, 300, 



477 ; in clover and strawberry in 



U.S.A., 168, 460 ; distribution 



and food-plants of, 543 ; causing 



ring disease of hyacinths, 168 ; 



value of crop rotation against, 



169, 300 ; Enchytraeid enemies 



of, 470 ; T. sycobius closely 



allied to, 360. 

 Tylenchus mahogani, in mahogany, 



543. 

 Tylenchus musicola, sp. n., in 



bananas in Grenada, 5. 

 Tylenchus oryzae, in rice in Java, 543. 

 Tylenchus penetrans, related to T. 



musicola, 5 ; food-plants of, 543. 

 Tylenchus pratensis, in roots of 



lily of the valley in Holland, 96 ; 



related to T. musicola, 5. 

 Tylenchus sacchari, in sugar-cane, 



543. 

 Tylenchus scandens, considered a 



synonym of T. dipsaci, 543. 

 Tylenchus semipenetrans (see Tylen- 



chulus). 

 Tylenchus similis, related to T. 



musicola, 5 ; in sugar-cane and 



banana, 543. 

 Tylenchus sycobius, sp. n., in wild 



figs in France, 360. 

 Tylenchus tritici, measures against, 



in cereals in U.S.A., 82 ; in wheat, 



543. 

 Tyloderma fragariae (Strawberrj^ 



Crown Borer), in Missouri, 240. 

 Typhlocyba, on elms in Holland, 



386 ; on Aralia guilfoylei in 



Java, 38. 

 Typhlocyba (Erythroneura) conies 



(Grape Leaf hopper), in Ontario, 



132 ; in U.S.A., 240, 407, 408. 

 Typhlocyba douglasi, on Fagus 



sylvatica in Britain, 12. 

 Typhlocyba erythrinae, on Erythrina 



in Java, 38. 

 Typhlocyba rosac, on fig in France, 



24. 



typographus, Ips {Tomicus). 



Typophorus canellus (Strawberry 

 Leaf Beetle, Strawberry Root 

 Borer), in Ontario, 132 ; in 

 U.S.A., 114, 190; on roses in 

 greenhouses, 114. 



Typophorus viridicyaneus, on cotton 

 in Texas, 154. 



Tyroglyphus, in imported tea seed 

 in Dutch East Indies, 370. 



Tyroglyphus farinae, in flour and 

 bran in Britain, 10, 11, 431 ; 

 in stored grain in Canada, 162 ; 

 Cheyletus eruditus predacious on, 

 in Denmark, 362 ; measures 

 against, 1 1 . 



Tyroglyphus heteromorphus, attack- 

 ing Stvategus quadrifoveatus in 

 Porto Rico, 573. 



Tyroglyphus longior, in flour in 

 Britain, 10. 



Tyroglyphus putrescentia, in stored 

 seeds in Denmark, 362. 



Tyroglyphus siro, T. longior resem- 

 bling, 10. 



u. 



uddmanniana, Eucosma [Aspis). 



udei, Pauropsylla. 



Udeopsylla nigra, predacious on 



Lachnosterna, grasshoppers, etc., 



in U.S.A., 118. 

 Ufens plicatus, a minor pest in 



Montana in 1920, 585. 

 Uganda, Anaphe infracta in, 432 ; 



miscellaneous pests in, 319. 

 Ulex, Heliothis peltigera on, in 



Germany, 277. 

 ulmariae, Siphonophora (see Acyr- 



thosiphon pisi). 

 ulmi, Atractotomus ; Eriosoma 



[Schizoneura] ; Kaliofenusa ; 



Lepidosaphes ; Necydalis ; Scirto- 



thrips (see S. ulmifoliorum) ; 



Tetraneura. 

 ulmifoliorum, Physothrips (see P. 



consociatus) ; Scirtothrips (Thrips). 

 Ulrnus (see Elm). 

 Ulmus campestris, Aphids forming 



galls on, in Europe, 174. 

 Ulmus fulva (Red Elm), Argyresthia 



undulatella in, in U.S.A., 162. 

 Ulodcmis trigrapha, on apple in 



India, 211, 273. 

 uinbellatarum, Syrphus. 

 umhraculata, Porina. 

 ttmbratica, Epeira. 

 uncinatus. Platypus. 



