39 2 ENTOMOLOGICAL NEWS. [Oct., '08 



species was a southern one and that it is unable to maintain 

 itself in a northern latitude. The periodical -occurrence of the 

 larva he explained by the supposition that the impregnated 

 females migrated northwardly and laid eggs which developed 

 mature larvae. The pupae, however, are unable to survive the 

 winters and consequently another brood would depend on an- 

 other chance wanderer. 



This supposition lacked the support of the other members 

 who believed that if the species were truly a migrant, it would 

 not continually pass over certain regions harboring its food 

 plant immediately to the south of Fort Lee, where the insect 

 had been often searched for but never found. It would be more 

 reasonable to suppose that in the off years the species was re- 

 duced almost to extinction by parasitism, and that it took sev- 

 eral years to again multiply to noticeable numbers. 



Mr. Erhard showed specimens of Phlyctacnia profundalis 

 Pack. (Lep.) and El codes grandicollis Mann. (Col.) taken 

 alive at Newark, N. J., from celery imported from California 

 and a number of living Conacephalids shipped with the same 

 product from Florida. 



JOHN A. GROSSBECK, Secretary. 



A meeting of the Newark Entomological Society was held on 

 April 12, with twenty-one members present, and Messrs. Chris. 

 Roberts, of Connecticut ; Henry Dietz, of Newark, and Chas. 

 J. Martin, of Brooklyn, visitors. Dr. H. D. McCormick, of 

 Little Falls, was elected a member. 



Mr. Roberts addressed the Society on how and where to 

 collect aquatic Coleoptera. Of first importance is a strong- 

 rimmed net, perfectly rigid, and capable of resisting a dense 

 vegetation. Deep water harbors little beetle life, but water 

 several inches in depth or less is exceedingly prolific, and in 

 using the net it is best to begin as far out from the shore as the 

 shallow water extends and work inward. It is a habit of the 

 insects to dart away from the pursuer into deep water if the 

 opposite method is followed. If a long bag is used the contents 



