TABANIDAS OF OHIO. 43 
Male: First basal cell with a hyaline patch before the apex; second 
basal cell with a: long hyaline streak through its center; this streak is 
expanded near the apex of the cell and communicates with the hyaline 
patch in the first basal; the veins which bound the anal cell are margined 
with brown; the yellow on the sides of the first two abdominal segments 
is less extensive than in the female and the yellow triangles are smaller. 
Habitat: Sandusky, Ohio. 
The width of the apical spot easily separates this species from 
moerens, callidus and indus. It is related to pudicus, but is more 
robust, the black on the second segment is more extensive and 
the cross-band different than in that species. Osten Sacken prob- 
ably included it with pudicus. See his observation appended to 
that species. 
It appears to be a common species on Cedar Point during the 
first half of June, and the females were very persistent in attack- 
ing us while we were collecting the specimens we procured. 
CHRYSOPS STRIATUS Osten Sacken 
Length 7-9 mm. The two longitudinal stripes on the middle of the 
thorax are “greenish-gray” and therefore quite different from those of 
vittatus; abdomen, dorsally marked with four longitudinal stripes, the 
two inner of which usually reach the scutellum and join one another on 
the first segment and in now and then a specimen they also unite on the 
anterior part of the second segment; the outer stripes may or may not 
reach forward onto the first segment; ventrally yellow on basal half, 
marked with black on middle and sides on apical half. 
Female: Frontal callosity varying from light brown to pure black; 
scutellum black on the disk, margined with yellow; first basal cell of 
wing brown, second hyaline except a small patch at base; the cross band 
leaves a very narrow margin at the apex of the fourth submarginal cell; 
posterior branch of the fifth vein dimly margined on both sides, otherwise 
the fifth posterior and apical cells are hyaline; the hyaline triangle occu- 
pies the apical parts of the first three posterior cells and extends into 
both submarginal cells in the region of the branching of the third vein; 
the second submarginal is almost entirely brown in some specimens or 
in others may be hyaline along the whole length of the posterior branch 
of the third vein to the extent of half the cell. 
Male: Scutellum usually entirely black; a subhyaline streak passes 
from the margin of the wing lengthwise of the fifth posterior cell into 
the second basal and toward the base of the wing along the fourth vein; 
otherwise the second basal and fifth posterior cells, infuscated, first basal 
brown with the exception of a small hyaline spot; apical spot includes 
nearly all of the second submarginal and may encroach upon the first 
posterior cel. The male is here described for the first time. 
Habitat: Sandusky, Ohio, where it is fairly common., 
This species is variable and hard to define; the variations 
extend to characters which in other’ species are known to be 
constant, and in some instances suggest a close relationship with 
sequax, whose type locality is Western Kansas. peed, 
