36 



ENTOMOLOGICAL SOCIETY 



Two lots of these galls were received, on March 22, and 

 April 2, 1907, respectively. On the latter date several of the 

 galls were cut open and were found to contain puparia and, 



Fig. I. — Agromysa tilur: a, Adult; b, puparium; c, section of gall showing pupa- 

 rium; d, galls on twig of Tilia americana; e, front view of head of adult, mouth 

 parts open; f, front view of head of adult Agromysa simplex, mouth parts closed; 

 a, b, much enlarged; c, d, somewhat enlarged; e, f, very greatly enlarged. (Draw- 

 ings made in the Bureau of Entomology and published by permission of the 

 Secretary of Agriculture.) 



in a few cases, dead adults only partially emerged. The first 

 living adults were obtained on April 4 and emergence contin- 

 ued for eight days. No further data on the life history were 

 obtained. 



