238 INSECTA. 
terior are smaller than the two posterior, and the rostrum is pro- 
longed under the pectus in the manner of a proboscis, compose the 
subgenus 
ASINDULUM(1). 
The subgenus 
Gworista, Meig., 
Only appears to differ from Asindulum in the insertion of the 
palpi, which, according to his figures, is near the extremity of the 
proboscis, and not near its base. This remark was communicated 
to me by M. Carcel(2). 
In no one of the following subgenera do we find the anterior part 
of the head projecting in the manner of a rostrum or proboscis. 
The eyes are always lateral. 
Sometimes the antennz, in the males at least, are longer than the 
thorax and setaceous, with the two first joints thickest. There are 
always three ocelli, the anterior or intermediate of which is the 
smallest. 
Boxiropuita, Hoffm. Meig. 
Where they are arranged in a transverse line. 
M. Guerin has published a detailed description of a species 
of this subgenus in the Am. des Sc. Nat., X. Its larva lives in 
the mushroom(3). 
Macrocera, Meig. 
Where the ocelli form a triangle(4). 
Sometimes the antenne, even of the males, are, at most, as long 
as the head and thorax. 
_ Some subgenera in which the eyes are always entire are removed 
from the others by their four posterior tibiz, all furnished exteriorly 
with small spines, as in 
(1) Lat., Ibid.; Meig., Ibid. 
(2) Meig., Ibid. ~ 
(3) Meig., Ibid. 
(4) Meig., Ibid. 
