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into the habits of some destructive species of Tipulidae were made, and 

 a report, illustrated by drawings, was presented to you for publication. 



A report on observations upon many species of Ooleoptera has also 

 been prepared and forwarded to you for publication. In pursuance to 

 your instructions, I secured a large number of eggs of Lachnosterna, 

 especially of L.fusca,L. gibbosa, and L. hirticula, and, after carefully 

 watching the development of these eggs, placed the larvae in breeding 

 boxes, and have colonies of larvae of each of these three species, reared 

 from the egg, and at present thriving nicely in confinement. 



On April 23 I received from you a consignment of Semiotelliis nigrvpes, 

 and, in accordance with your instructions, placed the larger portion in 

 a wheat field seriously affected by the Hessian Fly, and the smaller 

 portion were placed on fly-infested plants, under a cover of Swiss mus- 

 lin. Later I received from Prof. Bruner a second consignment, which 

 was promptly forwarded to Prof. Charles E. Thorne, Director of the 

 Ohio Agricultural Experiment Station, who placed them in two fields 

 of wheat near Columbus, Ohio. In regard to the success in introduc- 

 ing these parasites, I am not yet able to report. I did not rear adult 

 Semiotellus from those released among grain, under cover, but this is in 

 no way to be construed into a failure to colonize them in the field. 

 When received many had emerged from the flaxseeds, and some of 

 them had perished, and the larger portion of those remaining were 

 placed in the fields. At the time of the release at La Fayette, Ind., the 

 adult Hessian Flies and native parasites were abroad in great num- 

 bers. The field where they were placed had been seriously attacked by 

 the fly during the preceding autumn, fully one-half of the wheat plants 

 being affected. That portion of the field where colonization was made 

 has not been molested since, except to remove the crop. Wheat was 

 again sown on the larger portion of this field and also on another ad- 

 joining, also in wheat last year, so that at present there are two fields 

 of wheat growing within 20 yards of the spot where the liberation took 

 place. Therefore, while I am unable to say whether or not the parasite 

 has become established, I can say that it has had every opportunity to 

 do so, and a failure in this case would almost prove conclusively the 

 imposibility of colonization. The number of living parasites placed 

 was too small to show immediate results, and, therefore, time must be 

 given for them to multiply before expecting absolute proof of coloniza- 

 tion. With regard to those released here I am not so hopeful, as wheat, 

 owing to dry weather, did not germinate quickly after being sown, and, 

 I fear, may have come too late to afford hosts for the SemioteUus. Both 

 fields where the parasite was liberated still remain uncultivated. 



On July 1 of this year I severed my connection with the experiment 

 station at La Fayette, Ind., and formed a similar connection with the 

 Ohio Agricultural Experiment Station located at this place, a change 

 which was approved by yourself. 



Since locating here several destructive insects have demanded atten- 



