16 
sclerite; pronotal spot moderately large and plainly seen from above, 
occupying a little more than one- third of the dorsal aspect of the pro- 
notal foreborder. Abdomen much longer than thorax; segments 3 to 
5 increasing in length; 6 and 7 as long as 5. Antennae with joint 1 of 
funicle twice as long as 2; joints 3, 4, and 5 gradually decreasing in 
length, subequal in width; joint 5 more closely connected with club 
than with preceding joint. Color and wing venation as with preceding 
species. 
Described from 7 female specimens collected on wheat at Normal, 111., 
by Prof. F. M. Webster, in May, 1884. 
Isosoma hirtifrons n. sp. (fig. 6). 
Female. — Length, 3.7 mm. ; expanse, 7 mm. Sculpturing of head, pro- 
notum, and mesonotum as in preceding species, except that there are 
sparse, large, shallow punctures on mesoscutellum ; cheeks much fuller 
than in other species; metanotum as with I. maculatum. Abdomen 
Fig. fi — Isosoma hirtyfrons, Howard. 
about as long as thorax; segments 3 to 0, increasing in length. An- 
tenme stout, moderately long, very hairy; proportions about as in pre- 
ceding species. Body not unusually pilose, except face, which is closely 
covered with short white pile; pronotal spots very plain, but not large, 
occupying about one-third of the dorsal aspect of the fore-border of 
the pronotum. Color black, except for all femero-tibial knees and pro- 
notal spot. Claw of stigmal club given off some distance before tip, 
delicate and short. 
Described from 4 female specimens reared by Mr. D. W. Coquillett 
March 13, 188G, from rye stalks which he collected in Mercer County, 
Cal., June 21, 1885. 
Isosoma bromicola n. sp. 
Female. — Length, 3.1 mm ; expanse, 4.6 mm. Punctation of head, pro- 
notum and mesonotum like that of I. maculatum, which it also resembles 
