•98 Forty-ninth Report on the State Museum 



PAGE. 



States, 226. Nothing done in this direction iu New York, 226. ' lutro- 

 duction froui abroad or uinisnal mnltiplication might call for legisla- 

 tion, 2'27. Legislation thought to be needed for controlling the San 

 Jos6 scale, 227. Fear that it has been sent to every county in the State, 



227. Copy of a bill before the Legislature for inspection of probable in- 

 fested localities, 227. Remedies available against the scale, 228. More 

 effective during the winter season, 228. Various winter washes used, 



228. Two only reported as fully satisfactory, 229, Whale-oil soap, 229. 

 The winter resin wash, 229. Potash wash, 230. Summer washes only 

 partly effective, 230. Hydrocyanic acid gas treatment in California, 

 230. Not wholly eflQcient in the Eastern States, 231. Reliable for the 

 treatment of nursery stock, 231. Manner of treatment, 231. Bibliog- 

 raphy, incluJing references to topics not referred to in this paper, 231- 

 233. 



Myrmeleon sp. ? the Ant Lion 234 



An ant lion from Falls Church, Va., of an undetermined species, 

 234. Number of known species of ant lions in the United States, 234. 

 Dr. Hagen's study of the group, 234. Appearance and habits of Myr- 

 meleon, 234. The insect figured, 234. Its backward movement, 235. 

 Secures its prey by artifice, 235. Account of its pitfall, 235. Manner 

 ,of capturing its prey, 235. The cocoon in which it pupates, 236. 

 The winged insect with illustration, 236. How the larvae may be col- 

 lected, 236. The life histories imperfectly known, 236. Notes of 

 capture and observations by various writers, 237. Colonies observed 

 in the Helderberg mountains, 238. Of some European species, 239. 

 A species that springs from concealment on its prey, 239. Tree-climb- 

 ers, 239. Eggs of Ascalaphus on twigs and strangely guarded, 239. 

 Larvje of another species arranged in an overlapping row for seiz- 

 ing their prey, 239. United States species of Ascalaphina^, 239. Refer- 

 ence to a Myrmeleonid larva taken from beneath a carpet, 239. Some 

 literature of the MyrmeleonidiB, 240. 



Thrips tabaci, the Onion Thrips 241 



Bibliography, 241. Severe attack of Thrips on cabbage at Kingston, 

 Fa., in 1892, 242. The injury noticed in preceding years, 243. The 

 species could not be identified, 243. Character of the injury to cabbage, 



243. Six thousand punctures to the square inch, 243. Subsequently 

 identified as having been injurious to onions, 243. Its erroneous refer- 

 ence to Llmothrips tritivi, 243. Observed also in England, 243. In Colo- 

 rado described as a new species, 243. Finally recognized as Thrips 

 tabaci, of Europe, 244. Probably an old introduction iu this country, 



244. Occurs on various food-plants, 244. Serious injuries to the 

 onion crop, 244, Only recently known to attack cabbage, 244. List of 

 its known food-plants, 244. Distribution of the insect, 245. Its descrip- 



