142 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 1 



brownish comb-like structure composed of seven teeth and distinguish- 

 able with a hand lens. 



Mr. Bruner stated that he had found an insect which he had sup- 

 posed to be this species of Enarmonia on wild roses. 



A paper was presented, entitled : 



EGG LAYING OF EMPOASCA MALI 



By F. L. Washbubn, St. Anthony Park, Minn. 



In the twenty-first annual report of the state entomologist of Illi- 

 nois (1900), Professor Forbes states that what were then supposed to 

 be the eggs of the above species were found in slight swellings on the 

 green twigs and on the mid-rib and leaf stem of the apple. This sup- 

 position regarding the summer egg must have been correct, for we 



find young larvae so small and helpless on 



the mid-rib during the summer as to force 



one to conclude that its place of hatching 



^ must have been near by. Nevertheless, 



A ' J f the truthfulness of the supposition was 



not determined at that time, and so far as 



' we are able to discover, there has been, up 



"" to this date, no absolute confirmation of 



* i' this belief, nor has there been, to the best 



'^^ ,r- Z-^" of our knowledge, at any time hitherto, 



A^^^&^<^^^ ^^y accurate observations on the location 



>i.^„ v^j'/ ', -</ ^£ ^j^g fall-laid eggs, the eggs from which 



Fig. 5. Blisters containing eggs of COmC the first spring brOod. 



Empoasca maii, much enlarged Youug apple trees which had been 



infested with leaf hoppers in the sum- 

 mer of 1906 were dug in October of the same year and planted in 

 the insectary at the Minnesota Experiment Station. The heat was 

 not turned on in the room until quite late in the winter. The leafing 

 out of the trees was shortly followed by the appearance of Empoasca 

 larvae, but in spite of careful searching, eggs were not discovered. 

 Later in the spring, however, when hoppers appeared outside, Mr. 

 Ainslie, at that time an assistant in the department, found, April 23d, 

 on a young apple tree back of the insectary, several pouches or pockets 

 in the bark about 2 mm. long and 1 mm. wide at their widest portion. 

 The mouth of each pouch was about 1 mm. long. This opening ap- 

 peared to be closed with dirt or woody growth. One was dissected 

 and found to contain an egg which almost filled the pouch, its small 

 end toward the opening. Mr. Ainslie describes the egg as being white 



f 



