771 
No. 145.] 
is found at this season without any hole in it. In these the worm 
is still remaining,"to complete its changes and. continue its spe¬ 
cies the coming summer. And if one of these balls be placed in 
a tumbler with a piece of paper tied over it, the fly can in due 
time be obtained therefrom. Its form and size is much like that 
of the common house-fly, but it has an odd appearance from its 
wings being opake and of a tawny brown color, with clear spots 
upon the inner margin and at the tip. It may appropriately be 
named the Golden-rod fly (Jlcinia Solidaginis). 
This fly measures from 0.35 to 0.40 to the tip of its wings. Its body is of a pale 
brownish yellow or-a tawny whitish color with two darker brown stripes above upon 
the thorax. The antennae, mouth and legs are dull yellow, the face white, and the 
top of the head yellowish or reddish brown, with a blackish spot at base where the 
three ocelli or simple eyes are situated. The wings are tawny brownish-yellow, 
with blackish clouds, and with several dots and the veins lighter yellow. On the 
out^r margin beyond the middle are two small triangular hyaline spots, and a third 
longer one inside of these, a large transverse hyaline spot on the apex and two large 
■triangular ones upon the inner margin, the inner one bring larger and prolonged 
upon the margin to the base. Upon the margin of the wing, in these large hyaline 
spots are some tawny yellowish dots or small spots, namely, three in the apical spot, 
one in the smaller triangular one, one or two in the larger triangular one, and three 
where this last spot is prolonged in the axilla. 
Another pretty speeies of jlcinia, which is commonly found resting upon brakes 
in our meadows in midsummer, but which I have not yet discovered in its prepara¬ 
tory state, may be named the New-York Acinia (A. Novaboracensis.) It mea¬ 
sures 0.35 to the tip of its wings, and is of a pale brownish or tawny flesh color, and 
like the preceding species, is clothed with a short stiff beard, which is of a silver 
gray color, with scattered black bristles. The orbital edge of the eyes is whitish, 
and the eyes when the fly is alive are of a pale coppery red color crossed with three 
golden yellow stripes having a green reflection, the middle one of these stripes being 
broadest, and the .upper one slightly narrower than the lower one. When dead the 
eyes change to blackish brown and the stripes to black, and they are now much less 
obvious. The antenna; are pale tawny yellow with a simple black seta or coarse 
bristle on their upper side. The face is whitish with two large black dots in the 
middle and one on each side between the antenna: and the eye, and a transverse 
brown spot is placed on each side between the anterior part of the mouth and the 
eye. The abdomen is dull pale yellow," with the apical segments black except on 
their posterior margins. The wings are opake", black, with a slender, hyaline-white 
crescent upon their tips, the anterior horn of which is sometimes tinged with 
tawny yellow, and upon the middle of the anterior margin is a small streak of the 
same color. The whole wing is covered, except towards the anterior side and the 
apex, with numerous white dots, those in and towards the axilla being larger. In 
some specimens a pruinose powder of a more intensely white color forms a ring upon 
he margin of all the larger dots. 
