387 



the piling of Lake Minnetonka, near Minneapolis, and they have formed 

 an interesting part of the Dipterological collection of the National Mu- 

 seum, while more recently we received a bit of piling from the shores 

 of Lake Ontario which were covered with these eggs from which larvae 

 hatched which we were able to determine as belonging to this genus by 

 comparison with the figures in Dr. Brauer's Monograph of Dipterous 

 larvaa. Our correspondent stated that the wharf piles for hundreds of 

 feet were covered with these eggs. 



A MONOGRAPH OF THE EVANIID2E. 



An -important monograph of the family Evaniidoehas been completed 

 by August Schletterer and published in three parts in the Annalen des K. 

 K. Naturhistorischen Hof museums, Volume IV. Parts I and II bear the 

 date 1889 and part III 1890. The species of the entire world are de- 

 scribed by means of analytic tables and lengthy descriptions, and the 

 synonomy is most carefully considered. The monograph is illustrated 

 with 6 lithographic plates of morphological details. He places only the 

 three genera Evania Fab. (Brachygaster Stephens, Hyptia Shuckard), 

 Gasteruption Latr. (Fcenus Walk., and other authors), and Aulacus 

 Jur. (Aulacostethus Philippi and Pammegischia Prov.) in the family 

 Evaniidas. The work as a whole is one of the most thorough and com- 

 plete monographs which we have seen. 



COLONEL PEARSON ON THE ROSE CHAFER. 



In the article on the Rose Chafer, on page 295 of the last number, we 

 neglected to make mention of an excellent article on this insect by 

 Col. A. W. Pearson in the January 22 number of Garden and Forest, 

 in which he states that subsequent experiment with Bordeaux mixture 

 showed that it was not the specific which he formerly considered it to 

 be. Last summer he made a solution of 1 ounce of good Pyrethrum to 

 2 gallons of water, first wetting the powder to a paste before mixing 

 with all the water. On spraying the vines with this mixture the bugs 

 became paralyzed and fell to the ground. Then he had men pass along 

 both sides of the trellis and jar the vines and kill the bugs with paddles. 

 Insect powder in this strength he finds does not kill them, but only 

 temporarily stupefies them, and they will eventually recover and fly 

 away. Meanwhile they will be quite easily destroyed for somo time. 

 As the testimony of a practical man this is of value. 



THE COLUMBUS HORTICULTURAL SOCIETY. 



We have been favored with No. 1, Volume V, of this Society, which 

 contains some interesting entomological matter. The principal article 

 is by Prof. D. S. Kellicott on "Our Injurious iEgerians." He gives a 

 short account of thirteen species and illustrates upon a well executed 

 plate the Peach Tree-borer, the Pear Tree-borer, the Imported Currant- 

 borer, the Maple Tree-borer, and the Plum Tree-borer. 



