1899] ENTOMOLOGICAL NEWS. 69 



fi ether with E.sig7in turn, wa,8 abuDdant about the lily-pads. At 

 the lasi I could tell it from E. gemiuata as far as I could see them, 

 either in flight or at rest. In its attacks upon Diptera and in 

 alighting, there was none of the hesitancy and fluttering of the 

 Enallagnias. The Kellicotti flew directly from one leaf to another 

 as though they had determined on a new location before deserting 

 their former resting-place. I never saw one at rest on any other 

 location than a flat-floating leaf of the white water-lily. They 

 were quarrelsome neighbors and frequently attacked E. geminata 

 and E. signatum^thow^h apparently without serious injury. At 

 rest, the abdomen did not lie extended straight as is usual with 

 Enallagmas and /• rerticalis.* They always seemed to stand on 

 the leav'es with the abdomen curved [convexly upward]. When a 

 dash was made for a fly and the prey escaped, the disappointed 

 dragonfly would open and close his wings nervously several times, 

 and the abdomen would be drawn into a greater curve [ found 

 them at only two places — the west end of Shriner and the west end 

 of Round lakes, Indiana. 



Scales on Apple-trees in Europe — Since the appearance of the 

 San Jose scale, the attention of European observers has been 

 directed to determine whether the scale insects occuiTing on their 

 own fruit trees do not lead a similar life Frank and Kriiger have 

 regarded certain scales on Tirolese apples as a variety of the San 

 Jose scale, on account of their i*esemblance. and raised the question 

 whether such species as Aspidiotus ostreoiformis, Diaspi^ piricola 

 and Mytilaspis pomorum attack the fruit itself. The Hungarian 

 entomologist, J. Jablonowski, in an article in Rovartani Lapok 

 (Budapest; for January, 1899, answers that the first and the third of 

 these three do, but that he has not yet found the second- mentioned 

 upon fruit. 



CoLEOPTERA COLLECTION IN New York City.— At the meeting of 

 the New York Entomological Society, May 17, 1898, Mr. Beuten- 

 miiller, curator of insects in the American Museum of Natural His- 

 tory, stated that the Museum's collection of (oleoptera was then 

 being arranged, and he estimated that it contained at least 150,000 

 specimens. 



Mosquitoes Spread Disease.— London, Jan. 31.— The Colonial 

 Office has determined to institute an earnest inquiry into the 

 causes of the increase of tropical diseases. The inquiry will have 

 especial reference to the alarming spread of malaria in India and 

 Africa. 



Recent research by eminent scientists in all parts of Europe has 

 traced the epidemics to mosquitoes and other insects bred in the 

 marshes and on the shores of rivers and seas. Under the auspices of 



♦This is contrary to my recollection of the behavior of the individuals I col- 

 lected In New Jersey.— Philip P. Calvkrt. 



