DIPTERA. 239 
Myceropuita, Meig., 
Where there are but two ocelli, very small and distant(1), and in 
Leia, Meig. 
Differing from Mycetophila in their three approximated ocelli, the 
anterior of which is the smallest(2). 
ScropHiLa, Meig. 
The Sciophilz have the joints of their antenne less crowded, or 
more distinct than those of the Leiz, and they are also hairy. Be- 
sides the closed cell which extends from the base. to the middle, 
their wings present another complete cell which is small and corres- 
ponds to the first of those termed cubital,in the Hymenoptera(3). 
From the subgenera in which the outer margin of the tibiz is des- 
titute of spines, and where there are always three approximated 
ocelli, we will first separate those in which the antennz are composed 
of sixteen joints. 
Here the eyes are entire, and without any remarkable emargina- 
tion(4). 
»Priatyura, Meig. 
To which he improperly unites the Ceraplatei. These Insects, in 
their wings and carriage, greatly resemble the Sciophile; but their 
first cubital cell is much larger; their antenne seem to be propor- 
tionally thicker and more compressed than those of the last subge- 
nera, and even slightly perfoliate. ‘The abdomen of the females is 
widest near the end(5). 
SynapHa, Meig. 
Where the wings present but a single cubital cell closed by their 
(1) Meig., Ibid. 
(2) Lat., Meig., Macq., and the Encyc. Méthod. 
(3) Meig., Ibid. 
(4) Meig., Ibid., and Macq., Dipt. du nord de la France. 
(5) Meig., Ibid. See Macq., Dipt. du nord de la France, Tipulaires, p. 45. 
