848 
ANNUAL REPORT OF NEW YORK 
YEIXOW-LEGGED BABLEY-FLY. THE FLY DESCRIBED. 
more rounded at its anterior than at its hind end, and its mouth 
is indicated by a transverse dark brown line formed by its jaws 
It is divided by fine impressed transverse lines into segments or 
rings, of nearly equal length, the number of which is usually 
twelve, though sometimes thirteen are visible. 
I present, in conclusion, a full description of this species, as 
drawn up on a careful comparison of numerous specimens, in 
their dried state; and this description will also apply in most 
of its particulars to the two preceding and also to the following 
species. ° 
The female of the yellow-legged barley-fly (see plate 1, fig. 1,) is 0.12 or 0.13 in length 
to tho end of the body. 6 
The HEAD, viewed from above, is nearly twice as wide as long, convex in front, concave at 
base, and isclosely and irregularly punctured and bearded with short gray hairs. It is black 
w.th the mouth chestnut red. The antennae are black with their basal joint paio tawny yel¬ 
low V hen turned backward they reach a third of the length of the thorax. They are 
bearded w.th small blaok Iristles which incline forwards. Theyare perceptibly thicker towards 
their tips and arc composed apparently of ten joints, whereof the two or three last ones are 
usually so compacted together as to appear as a single joint much longer than those which 
preoede it. The first joint is long, somewhat tapering and less thick than tho following 
joints, with which it forms an elbow. The second joint is shortest and the third is longer 
than those which follow it. The fourth and following joints are little longer than wide, 
s laped like a tea-cup, their bases being rounded and their tips out off transversely. Tho 
last joint is longer than that which precedes it, and is a little narrowed towards its tip, the 
end being bluntly rounded. 
The thorax is oval and about three times as long as broad, broader across its middle than 
the head, its anterior end blunt and abruptly rounded, conforming to the concavity of the 
base of tho head. Its collar is half as long as wide and is distinctly separated by a smooth, 
Shining, elevated, transverse lino, which bounds it posteriorly, this lino being bowed and 
parallel with the rounded anterior end of the thorax'. Viewed Iatorallv the thorax 
approaches to a crescent in its shape, the back being very convex or arched, wi'th its anterior 
end obliquely cut off by the head. Its surface is rough punctured and finely bearded, like 
the head, and of a black color. On each side of its anterior end a pale dull yellow dot, 
elevated and smooth, is usually perfectly distinct. 
The ABDOMEN is of tho same length with the thorax, but scarcely as broad. Viewed from 
above it is king oval, with the sting protruded and forming a sharp, attenuated point at its 
ip. The back is excavated or occupied by a long oval hollow, extending from near tho base 
to the tip. It is divided by fine transverse lines into five segments of nearly equal length. 
Viewed laterally it has tho form of a long cone with its base homisphcrically rounded. Its 
surface is highly polished, smooth and shining, of a black color with tho attenuated point at 
its tip dull pale yellow. 
The LEOS are shining, pale tawny yellow, nearly the hue of bccs-wax, with tho feet 
whitish and their tips black. They are of equal thickness, the anterior pair being shortest. 
The hind shanks are slightly curved. The shanks are armed similarly to kindred species of 
this g oup; that is to say, near the tip of tho fore shanks on their inner side is a large cylin¬ 
drical spur which reaches half tho length of the basal joint of the feet and is forked at its 
tip, the outer fork being twice the length of the inner one, sharp-pointed and incurved j the 
middle shanks have a single spine at their tips, and the hind ones have a pair. The feet arc 
five-jointed, the basal and apical joints being about equal in length and tho middlo ones 
shorter, the fourth one shortest. The four forward feet have at their ends a single too, 
which is scarcely as thick as the joint to which it is appended, is longer than thick, and is 
inclined obliquely inward ; and from its apex projects a hoof or nail of a oonicul form, the 
