316 INSECTA. 
form colour, generally that of the body, without any projection infe- 
riorly, and with a large oval aperture. The wings are incumbent on 
the body, and extend beyond it posteriorly; the scutellum projects; 
the abdomen is depressed, short, and terminated in some by a little 
point in the form of a stilet; the legs are almost glabrous or but 
scarcely pilose. 
In some, the antenne are almost as long as the head, and distant. 
Cr.typuus, Dalm. 
Easily distinguished from all other Diptera by the scutellum, which 
covers the whole back of the abdomen, as in Scutellera. 
C. obtectus, Dalm., Anal. Entom. The only species known. 
From Java. 
Lauxania, Lat. Fab. Meig. 
Where the scutellum is of an ordinary size, and the antenne have 
a plumous seta(1). 
The others have antennz shorter than the head. 
Here, they are always very short, inserted beneath a sort of arch 
that traverses the face, and very distant; the first cell of the poste- 
rior edge of the wings, or that which directly follows the cubital, is 
most frequently closed. The antennz are lodged in fossulz, and 
the space between them is elevated. The front is frequently punc- 
tured. 
Those species, in which the first cell of the posterior edge is almost 
closed, form, in the system of Meigen, two genera. His Timize 
(Timia), in which, according to him, the abdomen exhibits six an- 
nuli, and the palette of the antennz is short and almost semi-ovoid; 
and his Ulidie (Ulidia), where it is more elongated, almost ellip- 
tical, and where the abdomen presents but five rings. M. Fallen 
had designated this last genus by the name of Chrysomyza. We 
will unite these two genera in the single subgenus 
Mosixuuvs, Lat. 
(1) Lat. Gener. Crust. et Insect., IV, 357; Fab., and Meigen. The latter unites 
some species with it, in which the antennz are shorter, that might form a sepa- 
rate subgenus. ’ 
