342 



INDEX AND GLO8BAKY 



Robin, classification of, 164. 

 Rootgall-fly, 313, 327. 

 Root borer, 329. 

 Root louse, 329; on apple, 311. 

 Rose slug, 327. 

 Rose, insect enemies of, 327. 

 Rotation of crops, as insect pre- 

 ventives, 302. 

 Rove beetle, 289. 

 Royal jelly, 75. 

 Runners, 291. 



Saturniidse, 297. 



Samia cecropia, life history of, 

 illustrated, 24-33. 



San Jose scale, 188, 212, 32G. 



Sannina exitiosa, 325. 



Kaperda Candida, 309. 



Sarcophaga cimbicis, 190. 



Sarcophaga, transformations of, 

 146. 



Saw-flies, 290, 329. 



Scale insects, 185-187, 294, 322; 

 remedies for, 306. 



Searabseidae, 288. 



Scent of butterflies, 40. 



ticliisoneura lanigcra, 311. 



Rcliizocerus cbenus, 329. 



Scoliidae, 291. 



Scolytus rugulosus, 312, 324. 



Scolytidse, 290. 



Scorpion-flies, 286, 287. 



Scudder, S. H., 57. 



Segments, normal number of, in 

 caterpillar, 14. 



Xclandria vitis, 320 1 . 



Nclandria rosae, 327. 



Selection, artificial, 219; nat- 

 ural, 220. 



Sepal, 96. 



Sesia pyri, 325. 



Kesia tipuliformis, 318. 

 Shakespeare, quotation from, 73. 

 Sialidse, 286. 

 Sight, sense of, 40. 

 Silphidse, 290. 

 Silvanus surinamensis, 317. 

 Siricidse, 290. 

 Skeleton, exo-, endo-, 250. 

 Skipper, swallowtailed, distribu- 

 tion of, 203. 



Skippers, 294 ; classification of, 

 193. 



Slaves, of ants, 82. 



Snout beetle, 191. 



Smell, sense of, 37-39. 



Snowy tree cricket, 313. 



Social development, 63. 



Social organization, 219. 



Social wasps, 88, .291. 



Solitary wasps, 291. 



Sound, production of, 45. 



Special senses, 34-46. 



Species, number of, 162; varia- 

 tion in, 163. 



Sphegidse, 291. 



Nphcnophorus, 316. 



RphenopJioms ochreus, 191. 



Rplicx speciosus, 92. 



Sphingida?, 296. 



Spiracles, 268. 



Spittle insects, 294. 



Spotted cucumber beetle, 318. 



Spray nozzles, 308. 



Spray pump, 304, 305. 



Spraying machinery, 308. 



Spraying for codling moth, 130. 



Sprays, 303. 



Spreading-board, 233. 



Sprengel on fertilization, 94, 95. 



Springtail, 166, 167, 285. 



Squash, insect enemies of, 328. 



