INDEX. 203 



Page. 



Sciara sp., sulphur dioxide as insecticide 145 



Scolytus rugulosus, in Georgia 77-78 



on apple and peach in Texas 68 



healthy trees . 78 



Scurfy scale. (See Chionaspis furfura.) 



Scymnids, introduction into Hawaii - - 60 



Scymnus debilis, enemy of Pseudococcus sp. introduced into Hawaii 60 



Seeds, sulphur dioxide destructive to germinating power 1 142, 149, 150, 151-153 



fumigation with carbon bisulphid 91-92 



Sericulture, importance to entomologist 21 



prospects in United States 20-21 



Setaria, food plant of Aphis maidi-radicis. _ . _ 35 



Shade-tree insects in Ohio 72-74 



Shade trees, injury by Hemerocampa leucostigma 90 



Sharpshooter. (See Oncometopia undata.) 

 Shot-hole borer. (See Scolytus rugulosus.) 

 Silk culture. (See also Sericulture.) 



in Hawaii 64 . 



sometimes eaten by Lepisrna saccharina - 176 



Silkworm, as illustrative material in teaching. 21 



SUvanus surinamensis , Ateleoplerus tarsalis a parasite 148 



sulphur dioxide as insecticide 145, 146 



Silver-fish. (See Lepisrna saccharina.) 



Sitotroga cerealella, in stored corn in Texas. 69 



Smartweed, food plant of Aphis maidi-radicis 34-35 



Smith, R. I., and A. C.Lewis, paper, "Some Insects of the Year in Georgia" 77-82 



Soap solution, remedy for Schizoneura fodiens 170 



solutions, against first larval stage of Acridium purpuriferum 174 



Soil fumigation, in greenhouses, impracticability of hydrocyanic-acid gas. 154 



Soldier bug, spined. (See Podisus maculiventris .) 



Solenopsis geminata, injury to oranges in Cuba 70 



Spalangia hirta, parasite of Hsematobia serrata in Hawaii 63 



Sphenophorus obscurus,. cultural methods as remedy 63 



introduction into Hawaii 59 



Sphinx, catalpa. (See Ceratomia catalpx.) 

 Spined soldier bug. (See Podisus maculiventris.) 



Spirillum of cholera, spread by flics 17 



Spittle insects. (See Philsenus Uneatus and P. spumaria.) 



Spray outfit, the one used against Acridium purpuriferum 172 



Stalk borer. (See Papaipema nitela) 



Starch, not eaten by Lepisrna saccharina 174 



Staves, of ice-cream freezers, injury by Dermestes vulpinus 75 



Stegomyia {calopus) at St. Louis 24 



calopus, formaldehyde fumigation tests. 139 



in Kentucky 16 



and Indiana 74 



not yet taken in Ohio 74 



prevention of breeding in control of yellow fever 102 



pyrethrum fumigation tests 139 



sulphur fumigation in control 139 



tobacco fumigation tests. 139 



fasciata= Stegomyia calopus. 

 Stereopticon, use in chart making in boll- weevil laboratory 118-119 



