286 [Senate 
feet, moreover, are black in this species, and there is a broad black 
band at the base of the anterior tarsi. 
The males have the antennae composed of twenty-four joints, each 
encircled as usual with a row of hairs. These joints approach a 
globular form, but have, in common with those of the males of several 
other of our species, this striking peculiarity, namely, that through 
the whole series, though preserving the same diameter, they are al¬ 
ternately shorter and longer; twelve being compressed-globular or 
double-convex, and between each of these a very short cylindrical 
joint with convex ends. 
This species is closely related to the ornata of Say ( Appendix to 
Long's Expedition, p. 357), but is readily distinguished from that by 
its blackish antennae, the color of which contrasts strongly with that 
of the legs; by the greater number of spots on its wings, and these 
spots not being “ occasioned by the greater density of the hair of 
the surface in those parts.” In the latter character it also differs 
from the pictipennis of Meigen, as described by Macquart.; as also 
in not having the spots forming bands across the wings. If any 
description of the maculipennis of Stephens, in his catalogue of 
British insects, has ever been published, I have not met with it. 
That this species, however, exists abroad, is highly probable, from 
the fact that the specimens reared from wheat-worms by Mr. 
Markwick had “ spotted and transparent wings,” as he describes 
them, or clouds” as they were termed by Mr. Marsham. 
Mr. Curtis calls attention to this fact respecting these specimens, 
apparently from a suspicion thus excited that another species existed. 
He says, “ I am particular in noticing this, because the wings of 
Mr. Kirby’s C. Tritici are not spotted, nor are any individuals that 
I have seen ; and excepting the C. pictipennis, which is larger, I 
know of no species of the genus with spotted wings.” 
The species under consideration, may appropriately be named and 
characterized as follows : 
Cecidomyia ccrealis. Pale orange; tips of tarsi black; wings hyaline, with six dusky 
spots, two only based on the inner margin; apex of anal nervurc immaculate. 
Length 0.05. 
Specimens have been taken almost weekly, from the middle of 
June till the fore part of September, in fields of flowering wheat, 
among the grass of plats contiguous to dwellings, and upon the 
windows of houses. I do not doubt but its habits are very similar 
