308 INSECTA. 
stilet. The first terminal cell, that which comes after the cubital, 
is almost closed at the end, or forms a narrow, elongated, and trun- 
cated triangle. I suspect that this subgenus belongs to the division . 
of the Dolichopoda(1). ; 
In others, the sides of the face are furnished with hairs; the first 
joint of their antennz is much more slender than the following ones, 
almost cylindrical, and somewhat thickened at the end; the two fol- 
lowing ones form a small rounded club. 
Loncnorrera, Meig.—Dipsa, Fall. 
Where the ocelli are placed on an eminence. The wings are long 
and exhibit no transverse nervure beyond their base; the third lon- 
gitudinal nervure, from the exterior margin, is bifurcated. This 
subgenus is far removed from the Dolichopoda, near which Meigen 
has placed it(2). 
The body of the other Scatomyzides is thicker and less oblong, 
approaching more to the form of that of the common Fly. 
One single subgenus, or the 
Hetromyza, Fall., 
Presents mustachios(3). 
Two other subgenera are removed from the last of the division by 
the pilose or plumous setz of their antenne. 
Dryomyza, Fall. Meig. 
Where the face is concave beneath the antennz, and terminates 
- 
(1) Idem. For the genus 7etanops, which in some respects seems to belong to 
this division, see that of the Carpophila. 
(2) See Meigen. 
(3) Fall., Dipt.: the Mouche des latrines (Musca serrata, L.) of De Geer, which 
is referred by Fallen to this subgenus, differs from the other species in the seta of 
the antenne, which is simple. The palette also is larger and more crbicular. 
This Insect, which has a cinereous body with a fulvous abdomen, is very common 
in the interior of our houses. The sete and dentations of the exterior margin of the 
wings form no peculiar character—it is common to several other Scatomyzides. 
The Mouche bossue of De Geer—Insect., VI, ii, 5—quoted in the first edition of 
this work, whose larva, that feeds on Aphides, has two horns postericrly, is not 
an Oscina, but rather a Heleomyza. 
