46 



four weeks. In all cases under observation the females thus obtained 

 were Gronatopus bicolor, while all the males were what has been 

 described as Labeo longitarsis. Parasitized nj-mphs of Liburnia 

 lufulenfa and Liburnia campestris were taken at various times during 

 the summer months, and rearing the parasites they always came out 

 as above. This confirms the opinion expressed in the published notes 

 above referred to that Gronatopus bicolor and Labeo Jongitarsis are the 

 same species. It is probably on account of this sexual dimorphism 

 and the lack of knowledge of their life history that the males and 

 females of this species have been described as different species. 



"When the above-mentioned notes on Gonatopus bicolor were pub- 

 lished in the Ohio Naturalist I had reared it omly from Liburnia lutu- 

 1a nta. At the time little thought was given to the possibility of the 

 parasite coming to have any economic importance. By some means 

 the attention of the entomologists of Hawaii was called to these pub- 

 lished notes, and Mr. Albert Koebele was sent to Columbus, Ohio, to 

 investigate the matter and, if possible and if thought feasible, to 

 undertake the introduction of these parasites into Hawaii to prey upon 

 a Fulgorid, which is a pest upon the sugar cane. Probably many of 

 you are aware already of the work done at Columbus during the 

 summer by Mr. Koebele. He collected parasitized nymphs of Libur- 

 nia lutulenta and other species of Fulgorids and Jassids as well, 

 reared them till the parasites attained their growth and spun cocoons, 

 in which condition they were sent to Hawaii. Mr. Koebele was very 

 successful in this collecting and rearing of parasites. Several thou- 

 sand specimens were sent to Hawaii during the latter part of summer 

 and early fall. These were probably of more than one species, since 

 they were reared from a variety of species of hosts. At present it is 

 with considerable interest that we await reports from Hawaii in regard 

 to whether the parasites accepted the new host and new situation, 

 and the probability of their being a check to the ravages of the sugar- 

 cane Fulgorid. 



Mr. Hine stated that he had watched the progress of this work closely 

 and thought the results very important; also, that Mr. Koebele was 

 hopeful that the insects sent to the Hawaiian Islands would survive 

 and prove beneficial. Adults have already been reared from the 

 cocoons sent to Hawaii by Mr. Koebele. 



A paper was next presented entitled — 



SOME DISTRIBUTION NOTES. 



By F. M. Webster, Urbana, III 



In Volume IX of the Journal of the New York Entomological 

 Society I gave the distribution of Myochrous denticollis in the United 

 States, so far as I was able at that time. Quite recently Prof. W, S. 



