812 



INDEX. 



Scirpus maritimus (Club Rush), a 



food-plant of Aphis maidis, 347. 

 Sciriothrips citri (Citrus Thrips), 

 measures against, in U.S.A., 198, 

 287. 

 Sciriothrips longipennis, on Aniar- 

 antus in hot-houses in Holland, 

 509. 

 scihdus, Pterostichus . 

 scitus, Pityogenes. 



Scleroderma vulgare (Puffball), 

 Caenocara oculata breeding in, in 

 New Jersey, 457. 

 Sclerodermus domesticus, breeding 

 and utilisation of, against Xyle- 

 borus quadripes in Indo-China, 

 385, 437, 520, 586. 

 Sclerotinia foliorum, in clover in 



British Isles, 230. 

 Scobinaspis dentata, sp. n., on maple 



and black haw in Mississippi, 197. 

 Scolia diibia, parasite of Allorrkina 



nitida in North Carolina, 164. 

 Scolia formosa, bionomics of, in 



Queensland, 341,615. 

 Scolothrips sexmaculatus, predacious 

 on Tetranychus yoihersi in Florida, 

 397. 

 Scolytus confusus, sp. n., in Ulmiis 

 montana var. laciniata at Vladi- 

 vostok, 328. 

 Scolytus destructor (Large Elm Bark- 

 beetle), in Britain, 562. 

 Scolytus intricatus (Oak Bark- 

 beetle), in oak and sweet chest- 

 nut in Britain, 562. 

 Scolytus laevis, feeding habits of, in 



Europe, 149. 

 Scolytus mandli, sp. n., in Trans- 

 baikalia, 328. 

 Scolytus multistriatus (Small Elm 



Bark-beetle), in Britain, 562. 

 Scolytus pruni (Large Fruit-tree 

 Bark-beetle), food-plants of, in 

 Britain, 562 ; in Czecho-Slovakia, 

 487; in Russia, 117; feeding 

 habits of, 149. 

 Scolytus pygmaeus, feeding habits of, 



149. 

 Scolytus quadrispinosus (Hickory 

 Bark-beetle), on pecan in Missis- 

 sippi, 312 ; feeding habits of, 

 149. 

 Scolytus ratzeburgi, in birch in 



Sweden, 66. 

 Scolytus rugulosus (Small Fruit-tree 

 Bark-beetle), bionomics of, in 

 Argentina, 288 ; food-plants of, 

 in Britain, 562 ; in France, 266, 

 272 ; in peach in Ontario, 420 ; in 

 Russia, 117 ; in U.S.A., 494, 531 ; 



feeding habits of, 149 ; diss- 

 eminating Bacillus amylovorus, 

 494. 

 Scolytus sibiricus, sp. n., in Trans- 



baikaha, 328. 

 scoparius, Sphenophorus. 

 Scorzonera, Aphids on, in Germany, 



505. 

 Scotogramma trifolii, food-plants of, 



in British Columbia, 564. 

 Scots Pine (see Pinus sylvestris). 

 scriptor, Pityophthorus. 

 scrophulariae, Anthrenus. 

 scrutator, Calosoma. 

 sculpturatus, Chelifer. 

 scurra, Idiocerus. 

 scutellare, Colasposonia . 

 scutellaris, Clavigralla. 

 scutellata, Agroniyza ; Blepharipa. 

 scutellatus, Microplitis ; Mono- 



chamus. 

 Scutellista, parasitised by Quaylea 



whittieri in California, 70. 

 Scutellista cyanea, parasite of scale- 

 insects in Algeria, 33 ; utili- 

 sation of, against Saissetia oleae 

 in Cahfornia, 314, 512 ; parasite 

 of Saissetia oleae in Italy, 438. 

 scutiformis, Chrysomphalus, 

 Scymnus bipunctatus, predacious on 

 Pseudococcus bromeliae in Hawaii, 

 445. 

 Scymnus biverrucatus, predacious on 

 Phenacoccus hirsutus in Egypt, 

 521. 

 Scymnus kinzeli, predacious on 

 Tetranychus yothersi in Florida, 

 397. 

 Scymnus loewii, predacious on 



Aphids etc. in Porto Rico, 98. 

 Scymyius roseicollis, predacious on 



Apliids etc. in Porto Rico, 98. 

 Scymnus sordidus, utilisation of, 

 against mealy-bugs in Califoirnia, 

 314. 

 Scymnus syriacus, predacious on 

 Phenacoccus hirsutus in Egypt, 

 521. 

 Scymnus utilis, predacious on Tet- 

 ranychus yothersi in Florida, 397. 

 Scymnus xantholeuciis, relation of, 

 to social beetles in British Guiana, 

 349. 

 Scyphophorus acupunctatus, on sisal 



in Jamaica, 166. 

 Scythris temperatella, bionomics of, 

 on cereals in Asia Minor, 16 ; 

 Syringopais proposed as new 

 genus for, 16. 

 Sea Coast Flea-beetle (see Disonycha 



maritima). 

 secalis, Trachea [Apamea, Hadena). 



