April, '08] JOURNAL OP ECONOMIC ENTOMOLOGY 147 



maples and that was on a few small trees in a nursery row. This im- 

 munity, or probably we might better say resistance, was particularly 

 noticeable in Cumberland, where the scale was exceedingly bad on pop- 

 lars and native maples. Apparently none of them were absolutely free 

 from it, yet Norway maples, which are very plentiful in the city and 

 growing alongside of them, were examined in large numbers, and not 

 in a single case did we find one infested. 



Further investigations might prove the fallacy of the above state- 

 ments, but we think it probable that there is a resistance here at least 

 as great as that of the Kieffer pear to Aspidiotus perniciosus. 



Monocesta coryli. Among the insects of less common occurrence 

 which became a pest in at least one locality in the state the past season, 

 may be mentioned Monocesta coryli, the greater elm leaf beetle. This 

 beetle was found in large numbers last July in the vicinity of Keedys- 

 ville. Its attack seemed to be confined to the native, wild elms, which 

 it was defoliating so badly that it would no doubt be a serious pest, 

 should it continue to appear in future seasons as it did the past. 



We were unable to find any literature indicating its presence in the 

 state prior to the past season. One specimen in the department col- 

 lection, however, bears a Sharpsburg label, dated July 21, '98. No 

 notes could be found which would indicate that it had occurred there 

 in large numbers at that time. As the present year they were found 

 within a couple of miles of Sharpsburg, it seems reasonable to believe 

 that they have been in the vicinity for a number of years, but prob- 

 ably in less numbers. In the Mississippi Station report for 1895, Mr. 

 H. E. Weed mentions its presence in that state and suggests for it the 

 name of Greater Elm Leaf Beetle to distinguish it from the more com- 

 mon smaller species of elm leaf beetle, Galerucella luteola. 



Owing to the fact that MonOcesta coryli is of uncommon occurrence 

 and is not a familiar insect to many workers in entomology, we thought 

 best to publish herewith a short general description of same. 



The full-grown adult insect is about one half inch long from the an- 

 terior margin of head to the posterior margin of elytra. Head, legs 

 and abdomen are a light yellow color. Anterior one third of the elytra 

 and a trifle more than the posterior one third, are of a deep green color 

 shading on blue, with a beautiful metallic luster. A wide band of 

 yellow crosses the elytra between the green markings. Elytra are 

 long, projecting well back of the tip of the abdomen, also well below 

 the sides. There is much in the general appearance of this insect to 

 indicate that it is a tropical species which has migrated north, and 

 has become acclimated in this latitude. 



No remedies were tried for its control, neither were we able to 



