TABANIDA OF OHIO. 7 
wet places, and where the larva attains its full growth, the change 
to the pupa of course takes place; and as the pupa cannot trans- 
port itself it is evident that most adults issue in the vicinity of 
water or marshy ground. The only exception to this I have 
“noted is when the larva or pupa has been carried to remote 
places by high water. It is not an uncommon thing to meet with 
teneral specimens of various species clinging to grasses, reeds 
and other plants growing in wet ground, waiting for their wings 
to harden. At such times males and females are theoretically 
equal in numbers, and although not always as distinctly marked 
as older specimens, they are nevertheless desirable. The sexes 
of Chrysops may be procured thus when other efforts come to 
naught. 
As is well known only the females suck blood, and are there- 
fore the only sex that molests stock. The males procure their 
food from plants and consequently are to be looked for on flowers 
and foliage. In an endeavor to satisfy myself whether or not 
the females visit flowers, I have taken from various blossoms the 
past summer no less than half a dozen females of different species, 
but not in a single instance have I taken the male from animals. 
The statement appears in print that females visit flowers for food 
when they are compelled to do so, but it is probable that their 
visits to flowers are not necessarily compulsary on their part. It 
seems more plausible that these visits are made at times from 
choice. 
The females of Chrysops and some of the species of Tabanus 
come buzzing around the collector in numbers, and at such times 
may be taken easily with a net. The majority of the species of 
Tabanus in this region, however, are very active, and as they 
seldom alight on man for the purpose of sucking blood, not many 
are taken in the way just stated. 
During the time the female is ovipositing the male is often 
resting near by on the foliage. At Georgesville, Ohio, June 4th, 
I observed C. moechus ovipositing on foliage overhanging a mill 
race; soon after specimens of the male sex were observed resting 
on the upper leaves of the same plant on which the females were 
oviposing. In a few minutes collecting, a dozen or more spec- 
imens of each of the sexes were procured. 
The sexes of many species of Tabanus often alight on the 
bare ground of paths or roads that run through the woods. At 
Cincinnati, June 1oth, in company with Mr. Dury, we procured 
numbers of the sexes of different species resting on some fur- 
rows that were plowed around a woods to prevent the spread of 
fire. We also took the same species resting in paths and roads 
that ran through the woods. Some of these same species were 
