JOURNAL OF ENTOMOLOGY AND ZOOLOGY 165 



end with the hind legs, the coiled penis was then placed retracted in 

 its original position. 



Oviposition (Did egg. — Oviposition was observed on June 2, and 

 the long ovipositor was not used for making punctures. The egg 

 was deposited on the surface. The female thrust out her ovipositor, 

 which is telescope-like with a long and slender pointed tip. A single 

 white egg was squeezed out from the opening at the end of the 

 penultimate segment (Fig. 10, Plate I). The egg is long and 

 somewhat spindle-shaped, one end rounded and like the larger por- 

 tion of an Indian club, while the other end is capped with an obtuse 

 micropylar projection (Fig. 2, Plate I). 



The young larva. — On June 17, the eggs and the egg shells were 

 found on the young shoot of the Canadian goldenrod growing in 

 the field. I brought some of them into the laboratory and placed 

 them in glass dishes for observing their development. From the 

 egg shells on the young shoots, I found the tracks of the recently 

 hatched young larva. These were made by boring, and sometimes 

 were of considerable length. Some of the tracks ended in a little 

 hole, showing where the larva got in. Being carefully opened, 

 there was found a burrow leading inward directly to the central 

 portion of the shoot, where the young larva occupied a small cavity 

 which was newly made by it. 



On June 18, I examined the eggs which were placed In the glass 

 dishes the day before. A young larva just hatched out was boring 

 on the young shoot not far from its abandoned shell. The larva 

 was about 1.5-2 mm. long; it had made three holes, and was shifting 

 to another place for boring (Fig. 1, Plate II). Its mouth parts 

 worked like a digging hammer. 



The mature larva is about 9 mm. long and 4 mm. broad. Its 

 body is cylindrical with white smooth skin. It is always contracted 

 when taken out from the gall, so the middle part of the body is 

 broader than either end. In the front the prothoracic stigmas are 

 laterally prominent. The cephalo-pharyngeal skeleton is black in 

 in color (Fig. 7, Plate I). The mandible sclerites are exposed in 

 the front of the head. There are four processes projecting back- 



