292 



BOARD OF AGRICULTURE. [Pub. Doc. 



eggs for a second brood, which matures in the late summer. 

 The beetle is from one-fourth to three-eighths of an inch in 

 length, pale yellow, with a black stripe on the outer part of 

 each wing-cover. I have not been able to observe the trans- 

 formations of the second brood, but there can be no doubt 

 that there is such a brood in this State, since on July 1 of the 

 present year pupfe were found at Springfield, and at the 

 present writing, July 8, many beetles are emerging. 



Fig. 1. Different stages of tbe elm-leaf beetle: cr, eggs; h, larvae; c, adult; c, eggs 

 enlarged; /, sculpture of eggs; g^, larva enlarged; A, side view of greatly en- 

 larged segment of larva; ?, dorsal view of same; ,;, pupa enlarged; /-, beetle 

 enlarged; ;, portion of wing-cover of beetle greatly enlargea. From Rilej', 

 report United States Department Agriculture, 1883. 



Food Plants. 

 This insect feeds upon both the European and the Ameri- 

 can elm, naturally preferring the former. In many cases, 

 notably at Northampton, where European elms stand in 

 close proximity to American elms, the former are badly in- 

 jured, while the latter arc practically unharmed. Where the 

 European elm is not available, however, the American species 



