90 



pressure of the galls on the tender stem the latter had become dis- 

 torted and the upper portion with the head, where one was i3roduced, 

 was greatly aborted. He had, from these galls, reared several para- 

 sites, and these were at present emerging, some of them being engaged 

 in ovipositing in the dry galls, and he supposed they were parasitizing 

 the now full-grown larvae of the true gall maker, whatever that might 

 be. From a lot of infested stems he had reared the following: Eupel- 

 miis allynii French; Semiotellus chalcidiphagns Walsh; a Eurytomid; 

 Merizus isosomatis Eiley, and Websteria tritici Ashm. MS. Some of these 

 Tie had, during previous years, reared from Isosoma tritici, but he had 

 been told by Messrs. Howard and Ashmead that it would be necessary 

 to be most positive about the habits of the Websteria on account of the 

 widely differing habits of its nearest allies. Therefore he would delay 

 final publication until the whole matter had been cleared up. A large 

 number of dried specimens of the affected straws were showu, illustrat- 

 ing the work of the depredator, in stems from 4 to 20 inches in length. 



The following paper was then read by the author : 



A NEW ENEMY TO TIMOTHY GRASS. 



By L. 0. Howard. 



Tig. 8. — Oncognathus binotatus : a, female ; b, male — enlarged ; c, head, from side — still more ex- 



larged (original) . 



There is a handsome plant-bug of the family Capsidse which was de- 

 scribed many years ago by Fabricius as Capsus binotatus, but which was 

 placed by Fieber in his new genus Oncognathus in his revision of the 

 genera of this group in 1858, and which is found in different parts of the 



