178 



Dr. Marx gave some additional notes on his experiments with the bite of Lathro- 

 dectus but stated that the results had been wholly negative. 



Mr. Howard read a paper entitled " The Habits of Pachyneuron," in which he re- 

 ferred to the breeding records of this genus of Chalcididic, recording twenty distinct 

 rearings in North America, and made anumber of interesting deductions therefrom. 



Mr. Schwarz read a paper on the food habits of Corthiiluspunctatissmus. This Scoly - 

 tid, previously known to infest the subterranean part of the stems of Sugar Maple sap- 

 lings, was found in large numbers in the roots and subterranean stems of the common 

 huckleberry, Gaijlnssacia resinosa, in the vicinity of Washington during September 

 and October. In this connection Mr. Schwarz presented the description of a second. 

 North American Corthylus, C. sjnnifer, from semitropical Florida. 



Mr. Marlatt presented a paper on the final molting of Tenthredinid larvae, in which 

 he described the molting undergone by the larva of nearly all saw-flies after full- 

 growth is reached and just prior to spinning up or entering the ground to pupate, 

 describing also the accompanying change of color. Reference was made to the scanty 

 literature of the subject and the explanation of this molt by Cameron on the ground 

 of protection. 



Mr. Townsend read a paper on the Leptid (Dipterous) genera Tripiotrieha Lw. and 

 Agnotomyia Will. Mr. Townsend does not believe that the species of Triptotricha 

 with only one front tibial spur should, without other distinguishing characters, be 

 generically separated from those possessing two. 



Mr. Fernow called attention to the ravages of Gastropacha monaeha, particularly in 

 Bavaria, stating that it has probably been introduced in the present instance from 

 Italy. 



General discussion followed on a novel method employed in Europe of collecting 

 and destroying this Bombycid. 



C. L. Marlatt, 



Recording Secretary. 



