— 306 — 
961; tibia, 822 ; tarsus, 363 ; claw, 108. The di- 
gitules of the claw are fine and thread-like ; those 
of the tarsus are apparently wantirg. The two eyes 
are small, conical in form, and are situated near the 
base of the antennae. The entire surface of the derm 
is provided with light brown hairs, some short 
others long, all of which originate in a tubercle. 
In the derm there are also innumerable circular, 
compound glands, about 12 microns in diameter. 
These glands are more or less hemispherical in form, 
and are composed of a fine central tube and no less 
than 18 minute orifices in the marginal portion. 
The eggs are oval in form, and have a long 
diameter of about 700 microns and a transverse 
diameter of about 450 microns. The surface is 
smooth and glistening, and the color, in the begin- 
ning, is light yellow, which changes to red later. 
The male is large with the body black and 
orange red in color; the antennae and legs also are 
black. The body is about 3.500 mm. long, without 
the caudal processes. The antennae are about 3.500 
mm. long, and are composed of 10 joint, of which 
the third joint is the longest. All of the joints are 
ornamented with numerous long hairs arranged in 
three or more whorls. The legs are fine and long 
and are ornamented with many short spines and 
some hairs. At the posterior extremity of the body 
there are two pairs of appendices, fusiform, and 
ornamented with many long hairs; the leng: h of 
the median pair being about 0.976 mm. and that of 
the external pair, about 9.837 mm. 
The wings are smoky in color, are about 4 mm. 
long, and aside from the two nerves caracteristic of 
the family, have also two false nerves, indicated by 
transparent, oblique lines. The halteres are large, 
each one of which has three strong hooks on the 
distal extremity. The spread of the wings is about 
8mm. When alive the individuals are slightly co- 
vered with a white powder. 
Copulation takes place when the females have 
already attained their full growth, and but one or 

