240 INSECTA. 
posterior margin. The nervure in the middle, which traverses them 
longitudinally, bifurcates near the centre of their disk and forms a 
complete or closed oval cell. With the exception of their tibiz, 
these Diptera are closely allied to the Leiz(1). 
There, the eyes are evidently emarginated on the inner side. 
Mycerosia, Meig. 
Where the antenne consist of sixteen joints, and the wings pre- 
sent a large closed cell extending from the base to the middle(2). 
Motopzrus, Lat.—Sciara, Meig. Macq. 
With similar antennz, and where the middle of the wing presents 
a cell extending from the base to the posterior margin, and only 
closed by the latter(3). 
Campytomyza, Wied. Meig. 
Where the antennz consist of but fourteen joints, at least in the 
females, and also distinguished from the preceding by the wings, 
which are hairy and destitute of nervures at their internal margin 
The eyes are entire(4). 
Our last Tipulariz are fungivorous. 
” 
CrropiaTevs, Bosc. Fab. 
Where the palpi are turned up, appear to consist of but one joint, 
and are ovoid; the antenne are fusiform and compressed(5). 
Our last general division @f the Tipulariz, that which I call the 
Florales,is composed of species in which the antennz, hardly longer 
(1) Meig., Ibid. 
(2) Meig., and Macq. 
(3) Meig., and Macq. The only difference between this and the preceding 
subgenus appears to me to consist in the wings, and these characters are so 
slightly defined, that the two subgenera might be united. Olivier, in one of his 
first Memoirs on certain Insects which attack the cerealia, has described three 
species of Sciare and figured two. 
(4) See Meigen. 
(5) See Lat., Gen. Crust. et Insect., IV, 262. See also Fab., Meig., genus 
Platyura; Macq., and Dalm., Anal. Entom., 98. 
