328 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
2291. Riley, C. Y.—Continued. 
Cabbage insects— Continued. 
The cabbage Oscinis, Oscinis brassicce .. 322 
First found at St. Louis, 322—Habits, 322—Descriptive, Oscinis 
brassicce n. sp., 322. 
The Rocky Mountain locust, Caloptenus spretus . 323 
Successful introduction of a parasite (Apanteles glomeratus ) of the 
imported cabbage-worm.. 323 
General truths in applied entomology . 323 
Introductory, 323—Benefits derived from insects, 324—Influence 
of civilization upon insect increase,'324—Losses from insects, 
324—Knowledge which the economic entomologist should pos¬ 
sess, 325—Habits of the grape phylloxera, 325—Number of 
species of insects, 326—The different insecticides, 326—Arsen¬ 
ical compounds, 327—Petroleum, 327—Kerosene emulsions, 
328—Pyrethrum, 328—Its cultivation in California, 328—Its 
influence on mammals, 329—Insecticides to be used against 
root-feeding insects, 329—Mechanical contrivances, 329—The 
eddy-chamber or cyclone nozzle, 330. 
Kerosene emulsions . 330 
Their importance as insecticides, 330—Use in orange- groves, 
330—Warning against imperfect emulsions, 331—Formula for 
kerosene and soap emulsions, 331—Importance of a stable 
emulsion, 331—Use of a force-pump in making emulsions, 331— 
Trees injured by unemulsified oil, 332—The use of ley washes 
in California, 333. 
Miscellaneous insects ...j... 334 
The American Cimbex, Cimbex americana . 334 
Injury to willows, 334—A new habit, 334—Eggs and mode of 
ovipositiou, 335—Habits of young larva, 335—Remedies, 336— 
Other willow enemies, 336. 
The streaked cottonwood leaf-beetle, Lina scripta . 336 
Value of the cottonwood in the West, 336—Damage by the beetle 
in 1884, 336—Other food-plants, and former injuries, 337— 
Natural history, 338—Remedies, 338—Apparatus for poisoning, 
339—Varieties of the beetle, 340. 
The .Southern buffalo-gnat, Simulium. pecuarum . .. 340 
Losses in former years, 340—Damage done by European species, 
341—Early states of European species, 342—Early states of 
American species, 342—Recent ravages in the Southwest, 343— 
Remedies, 344—Smudges, 344—Body applications, 344—Sug¬ 
gestions, 345. 
The angoumois grain-moth, Gelechice cerealella . 345 
Abundance, 345—Origin, 345—Past history, 346—Natural history 
and method of work, 346—Number of annual generations, 347— 
Results of its work, 347—Parasites, 348—Remedies, 348— 
Baking and concussions, 348—Quarantine, 348—Bisulphide of 
carbon, 349—Preventive measures, 349—Description of eggs, 
350. 
The cottony maple scale, Pulvinaria innumerabilis . 350 
Distribution, 350—History and synonymy, 350—Life history, 351— 
Food-plants, 352—Mode of spreading, 353—Natural enemies, 
354—Remedies, 355. 
The cranberry fruit-worm, Acrobasis vaccinii . 355 
Natural history, 355 — -Remedies, 356—Descriptive, Acrobasis vac¬ 
cinii n. sp., 356 — Systematic position, 357. 
