PIPTERA. 325 



posterior margin. The nervure in the micklle. which traverses them 

 lonoitudinally, bifurcates near the centre of their disk, and forms a 

 complete or closed oval cell. With the exception of their tibiee, these 

 Diptera are closely allied to the Leiae *. 



There the eyes are evidently emarginated on the inner side. 



Mycetobia, Meig., 

 Where the antennae consist of sixteen joints, and the wings present 

 a large closed cell, extending from the base to the middle t- 

 MoLOBRUs, Lat. — SciARA, Meig. Macq., 



With'slmilar antennae, and where the middle of the wing presents a 

 cell extending from the base to the posterior margin, and only closed 

 by the latter +. 



Campvlojiyza, Weig. Meig., 



Where the antennae consists 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 §. 



Our last Tipularite arc fungivorous. 



Ceroplateus, Bosc. Fab., 



Where the palpi arc turned up, appear to consist of but one joint, and 

 are ovoid ; the antennae are fusiform and compressed i|. 



Our last general division of the Tipulariae, that which I call the 

 F/jz-a/itf, is composed of species in wliich the antennae, hardly longer 

 than the head in both sexes, are generally thick, consist of from 

 eight to iv/elve joints, in the form of a perfoliate club, nearly cylin- 

 drical in most of them, fusiform in some, and terminated in others by 

 athittker and ovoid joint. 7'he body is short and thick. The head 

 of the males is almost entirely occupied by the eyes. These Insects 

 approach the fungivorous Tipulariae in the nervures of their wings 

 and the palpi. Such particularly are those which form the 



CoRDYLA, Meig., 

 Removed from all the following ones by their fusiform antennse 

 composed of twelve joints. Their eyes are round, entire, distant, and 

 the ocelli are wanting. Their legs are long, and their tibiae spinous 

 at the extremity ^. 



We will now pass to subgenera in which the antennae are com- 

 posed of eleven joints, forming an almost cylindrical club. The 



* Meie:., Dipt. I, 155. 



■f-Meig., and Mncq. 



J 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 liis first Memoirs on 

 certain Insects which attack the cerealia, has described three species of Sciarae and 

 figured two. 



§ See Meigen. 



II See Lat., Gen. Crust. Insect., IV, 26a. See also Fab., Meig., genus Plotyura. 

 Macq., and Dalm., Anal. Entoni., 9S. 



H Meig. Dipt.., I, 274. 



