276 



Mr. Howard said that the fact that Pimpla inquisitor^ ordinarily au 

 internal feeder, becomes here external, is au interesting confirmation 

 of a generalization recently m ade by Professor Riley, to the effect that 

 nearly all parasites of endophytic insects are external. 



Mr. Riley remarked, in view of what had just been said, that this 

 generalization would hold good not only in reference to endophytic 

 larvae but also in reference to many external feeders, especially such as 

 in transforming spin a cocoon. He had shown that Thalessa fed ex- 

 ternally, the Qgg being probably laid on or near the Tremex larva. 

 The Ophion larva was known to feed externally, the egg being strongly 

 fastened to the skin of the victim. The same was true of most of the 

 Digger wasps so far as his observations went, and particularly in the 

 ScoUidw, Pompilidce, Sphecidce, and Bemhecidw. In some cases of external 

 parasites the ^gg of the parent would seem to be necessarily laid in the 

 burrow of the plant-feeder, the young larva being obliged to find its 

 victim, but in most cases the egg was attached by the parent. 



Mr. Aid rich showed specimens of Opheltes glaucopterits that he had 

 bred from larviB of Cimhex americana. He also stated that it had been 

 bred from C. americana by Mr. O. Lugger, of Minnesota. 



Mr. Howard stated that this same species is a common parasite in 

 Europe on Cimhex larvse. 



Mr. Jam es Fletcher said he had bred the same insect in Canada. 



Adjourned until evening. 



EVENING SESSION. 



After being called to order by Chairman S. A. Forbes, the following 

 officers were elected for the ensuing year: Chairman, Mr. A. J. Cook; 

 secretary, Mr. C. P. Gillette. 



The subcommittee appointed to confer with the committee on cooper- 

 ation of the Association of OfiQcial Economic Entomologists then made 

 its report through its chairman, Mr. J. B. Smith. After making certain 

 amendments the report was adopted as follows: The committee on ento- 

 mology respectfully begs to state to the general association that the pa- 

 pers presented by its members have been of such general interest to the 

 station workers and teachers and that so much advantage has resulted 

 to individuals, all of which will redound to the benefit of the stations 

 and colleges, that they are encouraged to ask that, if possible, the pro- 

 grams be so arranged hereafter that more time shall be given for the 

 consideration of special topics by the permanent committees. 



Mr. C. Woodworth moved that one member of the committee be ap- 

 pointed to act conjointly with two other persons, one from the perma- 

 nent committee on botany and one from the permanent committee on 

 horticulture, to secure, if possible, a set of standard, uniform connec- 

 tions for nozzles and pipe fixtures used in spraying machinery. Mr. 

 Alwood was appointed by the chair to act in this capacity. 



On motion of Mr. A. J. Cook the committee decided that in the cir- 



