JOURNAL. OF ENTOMOLOGY AND ZOOLOGY 169 



elsewhere. Finally it found a female and grasped it to mate, Its 

 genitalia was stretched and bending downward somewhat like a 

 sickle, and the female had its genitalia stretching out quite straight. 

 Copulation took place; it lasted only one and a half minutes, and 

 then they separated. 



The eggs. — I put several beetles, both males and females. In 

 the 8-ounce bottle, in which two young galls and two or three young 

 leaves of the goldenrod were placed. They had been looked over 

 carefully before they were placed in, in order to make sure that there 

 was nothing on the surface of the galls and leaves. From time to 

 time I examined them by taking them out of the bottle. On June 

 30, I found two eggs on the surface of the gall. The outline of the 

 egg is not oval, nor regularly elongated, but rather irregular. Its 

 larger end is rather roundish, blunt, while the narrower and pointed 

 end Is somewhat attenuate (see fig. 2 of Plate 2) . 



Oviposition. — On July 9, about 7 o'clock in the morning, I found 

 the female endeavoring to oviposit on the surface of a gall growing 

 in the field, though it did not lay eggs at all; on account of the 

 hardness of the epidermis of the gall, It was unable to make a 

 puncture. The beetle tried several times to puncture the surface, 

 especially at the place near the petiole of leaves growing on the 

 surface of the gall. It thrust out its ovipositor, bending downward 

 to puncture the surface and trying several times on the surface of the 

 leaves too, then the beetle flew away from one plant to another and 

 jumped away again and finally it was lost to my sight. 



From the beetle's endeavor in laying eggs, from the eggs laid by 

 the beetles in the laboratory, and also from the eggs found In the 

 field, which have been identified by comparing them with those laid 

 in the laboratory, I understand why these eggs are always embedded 

 with their larger end on the surface of the gall, though not par- 

 ticularly deep. The female beetle makes a very shallow hole, just 

 enough for embedding a part of the larger end of the egg, while the 

 pointed end does not touch the surface of the gall at all. The egg 

 hatches out in such condition, the young larva crawls on the surface 

 and makes its way into the gall by boring on the epidermis from the 



