387 



pockets in which these larvae are found do not show from the outside^ 

 but are seen as soon as the hide is removed, generally just where the 

 head and neck join under the jaw. In the animal referred to there 

 were two pouches or pockets on one side, one lower than the other, an 

 unusual case, as there is generally one on each side. The poi)ular ac- 

 count given by old hunters is that the eggs are deposited by a fly 

 which enters the head, probably by the nostrils. One deer's head ex- 

 amined had the pocket of larvae between the ear and the upper jaw^ 

 with an opening into the tube at one side of the glottis, opening into 

 the mouth near the roof. This is an insect of much interest, and we 

 rely on our correspondent to secure further specimens alive and to 

 endeavor to breed the fly. 



THE SHIELD METHOD FOR LEAF HOPPERS. 



Mr. Eugene Weston, of Caiion City, Colo., secretary of the Fremont 

 County Horticultural Society, writes us of the success of the follow- 

 ing plan for combating the Grape-vine Leaf-hopper: Four lath nailed 

 in a square nnd suitably braced are covered with drilling, which is 

 then smeared over with the residuum of petroleum remaining after the 

 kerosene is distilled off, which is easily obtained in quantity from the 

 local oil-wells in that vicinity. One man carries the frame while an- 

 other raises the vines, thereby disturbing the leaf-hoppers, which fly 

 against the shield, and are thus destroyed ty millions. The best time 

 for the operation was found to be just before or near sundown and 

 nightfall, as the temperature rapidly cools there at that time of the 

 day. It should not be so warm that the hoppers fly, nor so cool that 

 they fall at once to the ground. If the frame is held at a slight angle 

 and as near as possible to the vines, they will hop on it in myriads. 

 The operation must be rapidly and thoroughly performed, and repeated 

 as often as the hopx)ers again become numerous. 



This plan has also been used hj grape-growers in California and 

 New York, with considerable success, during 1887 and 1888. 



LORD WALSING ham's INDEX. 



In our next number we shall resume the publication of Lord Wal- 

 siugham's "Steps towards aEevision of Chambers's Index, with Notes 

 and Descriptions of new Species." The next number will begin with 

 the genus LithocoUetis. We regret that we have not been able to pub- 

 lish this valuable work in consecutive numbers of Insect Life, but 

 we have received the copy in installments, and the distance in time- 

 between Washington and England has rendered it impossible. 



