90 



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

 torted and the upper portion Adth the head, where one was produced, 

 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 

 tlie now full-grown larva? of the true gall maker, whatever that might 

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

 mus allynii French; Semiotellus chalcidiphagus Walsh; a Eurytomid; 

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

 he had, during previous years, reared from Lso)<o)na 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 Wehsteria on account of the 

 widely differing habits of its nearest allies. Therefore he would deh.iy 

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

 number of dried specimens of the afltected straws were .shown, 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. 



Hy L. 0. Howard. 



Fig. i.—Oncognathun binotatus: a, female; b, male— enlarged ; c, head from side— still more ex- 

 larged (original). 



There is a handsome plant-bug of the family Capsidoe 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 



