' Twelfth Keport of the State Entomologist 167 



PAGB. 



borer, 245, Duration of larval [stage, 246. Final transformations, 246. 

 Neoclytiis erythrocephalus and Magdalis armicollis are associated insects, 



246. Its recorded distribution limited, 247. No parasites are known, 



247. Burning badly infested trees, 247. Application of washes recom- 

 mended, 247. Barking and applying kerosene emulsion, 247. Experi- 

 ments by M. Robert in France on barking elms, 247. 



Crioceris 12-punctata, the Twelve-Spotted Asparagus Beetle 248 



Bibliography, 248. Crioceris asparagi long known in this country, 249. 

 The twelve-spotted form discovered in Monroe county, N. Y., in 1893, 

 249. Its ; injuries in 1897, 249, The beetle described, 249. The insect 

 figured, 250. The larva described, 250. Life history and habits, 250. 

 Appearance of over-wintered beetles, 250. Introduction and spread, 251. 

 The known distribution, 251, General distribution of Crioceris asparagi, 

 251. Infested localities in New York State, 252. The 12-8potted form 

 may occupy a similar range, 252. Air-slacked lime and arsenical com- 

 pounds recommended, 252. 



Galerucklla luteola, the Elm-Leaf Beetle in Albany and Troy 253 



Bibliography, 253. Progress up the Hudson river, 255. The beetles 

 continued feeding and multiiilying throughout the growing season, 255. 

 The first brood completed its transformation in Albany the last of June, 

 255. Eggs found early in July, 255. Operations of second brood of 

 larvEe on a fresh crop of leaves in August, 256. Continued breeding 

 until into October on old foliage, 256. A probable third brood, 256. 

 Numerous egg-clusters found in Troy during August,?256. Final trans- 

 formations of second brood of larvte, 257, Green leaves infested with 

 larvas November 7th, 257. Record of oviposition of beetles in cages, 257. 

 Period of larval existence, 258. Duration of egg and imago stages, 258. 

 A fungus affecting the beetles, 258. Activity of the insect extended over 

 a length of time ample for the production of three generations, 258. 

 Larvee able to mature on old foliage, 258. Badly eaten leaf figured, 

 259. American elms injured, 259. Cannibal habit of larvje, 259. 

 Skeletonizing of old leaves by the beetles, 259. Slow spread of the 

 insect in Albany, 259. Severe injuries to both European and Ameri- 

 can elms in Albany, 260. Extent of injury to European elms in Troy, 



