CF WASHINGTON, VOLUME XI, 1909, 73 



Dr. Hopkins spoke of the various insects using air to aid 

 them in different ways, citing the bladder used by 7^/ia/cssa 

 to aid in oviposition and in Diptera of the breaking open of the 

 puparium by the ptilinum. 



.Mr. Kincaid asked whether the air used in means of ecdysis 

 had ever been analyzed to see if it was carbon dioxide or air. 

 Mr. Knab replied that, in some cases at least, it was air ob- 

 tained directly by ingestion immediately before ecdysis. 



-The next paper of the evening, "Some Habits of Kmpid 

 Mies," by W. L. McAtee,* was discussed by Messrs. Schwarx, 

 llarber, Knab, Hopkins, and Howard. 



-Professor Trevor Kincaid gave the society a very enter- 

 taining talk on his experiences in Japan, telling of the mode of 

 living, the various customs, the entomologists of the country, 

 and work of obtaining and shipping the parasites of the gipsy 

 moth. 



Mr. FUisck then read the following paper: 



BOVING'S STUDIES OF THE EARLY STAGES 

 OF DONACIA.t 



[Coleoptera, Chrysomelidse.] 

 BY AUGUST BUSCK. 



This most interesting and exhaustive work on the early 

 stages of the beetle genus Donacia. for which my friend and 

 former colleague Doctor Roving was c .'iv; n his doctor's << vree 

 at the Royal University in Copenhagen, was privately printed 

 in Danish and is therefore apt to be overlooked by the American 

 worker. 



Some of the members of the Society will remember that 

 Mr. E. D. Sanderson read a paper on this subject before the 

 Society in May, 1900.y 



This paper, as well as that of another American worker on 

 the group, MacGillivray, is very carefully analyzed and the 



*Withdruwn for publication elsewhere. 



fAiiAM GIKDK l>ovi.\<;. Piidrusj,' til Kundskaben om Donaciin-Lar- 

 vernes Naturhistoric. Copenhagen, 1906. 

 ^Published Can. Ent., xxxn. p. 249-263. 1900. 

 ^Aquatic Insects of New York State, part 5, 1903. 

 HHerliner Ent. Zdtschrifl. XXXI, p. 325-334, 1XS7. 



