22 BULLETIN 808, U. S. DEPARTMENT OF AGRICULTURE. 



with R. hordei Harris, stating that he had reared hordei from 

 Elymus at Champaign, 111. The writer has examined these speci- 

 mens and they are very clearly nifi'pes. The species resembles hordei 

 somewhat in that the legs are reddish brown, but it is much larger 

 than hordei and other characters very readily distinguish them. 

 Rufi'pes is apparently a strictly western species, never having been 

 reared any farther east than Champaign, 111, It has been reared 

 from Elymus sp. collected in Kansas, Nebraska, New Mexico, and 

 Utah. It has never been reared from any grass other than Elymus 

 sp. Repeated attempts were made by the writer to rear it in confine- 

 ment at both La Fayette, Ind., and Charlottesville, Va.,upon its host, 

 but it has steadily and persistently refused to breed. It apparently 

 would oviposit, but no larvae ever developed. It forms galls in the 

 stems of Elymus sp. Nothing is known of its life history further 

 than that it has a single generation during the year, hibernating in 

 the usual way and emerging in May. Both sexes occur. 



HARMOLITA HESPERUS Phillips and Emery. 



Hmmholita hesperus (10, p. 457) was considered by the writer for 

 quite a while to be rufipes. The two species can be distinguished, 

 however, very readily. H. hesperus is apparently a strictly western 

 species, having been reared from Elymus sp. collected from Kansas 

 and Utah, but it has never been found east of the Mississippi Eiver. 



E. hesperus forms galls very much as does elymicola. It has not 

 been reared from any plants other than Eordeum jubatum and 

 Elymus sp. Nothing is known of its life history further than that it 

 hibernates in the usual way and emerges in May. Both sexes occur 

 normally. The writer has never been able to rear this species in con- 

 finement, though repeated attempts have been made to rear it in 

 Elymus sp., both at La Fayette, Ind., and at Charlottesville, Va. 

 The Qg'g is shown in figure 7 at a. 



HARMOLITA ELYMOPHTHORA Phillips and Emery. 



Earmolita elymophthora (10, p. 465) appears to be a strictly west- 

 ern species also, having been reared only from Nebraska and North 

 Dakota. It was first brought to the writer's attention by C. N. Ains- 

 lie, who sent in galls on Elymus sp. from which was reared this 

 species. It forms galls in Elymus sp. (PI. VI, D, E), though it is 

 not known whether it has other hosts or not. It has refused to breed 

 in confinement at Charlottesville, Va. It has one generation a year 

 and both males and females normally occur. 



HARMOLITA OVATA Phillips and Emery. 



EaTTnolita ovata (10, p. 458) has been reared only from Kansas. It 

 was sent to the writer in the fall of 1914 by E. O. G. Kelly, who was 



