NEUROPTEKA. 
343 
TIIE TIIOKAX. 
The pronotum (PI. LX, fig. 4) is very small and short, with a deep 
transverse, impressed line ; on the median line it is excavated in front and 
behind. 
The mesonotum (PI. LX, fig. 15) is without a prsescutum; the scutum 
is large, about two-thirds as long as broad, and well-rounded in front. 
The scutellum is small, transversely narrow oblong. The post-scutel- 
luin is moderately long, interrupted by the median line. 
The metanotum (PI. LX, fig. G) is much shorter than the mesonotum, 
but of the same general shape; the scutellum is also of the same general 
shape, but a little longer. The postscutellum is as in the mesonotum. 
Pleurum. 
The pleurites in this family are very long and narrow, the thorax 
being much compressed, its general shape approaching that of the 
Trichoptera and Lepidoptera. 
The propleurum (PI. LX, fig. 7) is rudimentary, the episterna and 
epimera being membranous. 
. The mesopleurum (PI. LX, fig. 9) has the episternum undivided, and 
is moderately full in front. The epimerum is entire, narrow, a little 
shorter than the episternum, and not so broad. The coxa is rather 
slender; the trochantiue long and narrow. 
The metapleurum (PI. LX, fig. 8) is as the mesopleurum, but the 
episternum audepimerum are decidedly shorter, and slightly broader in 
proportion. The coxae are a little larger and thicker, while the troeban- 
tiue is about the same. 
Sternum. 
The prosternum is linear and rudimentary. 
The mesosternum is short and broad, 
much as in Lepidoptera. 
The metasternum is much smaller 
and less distinct than the mesoster- 
num. 
Finally, in the thorax as a whole, 
and in the form of the pleurites and 
sternites, we have a striking approxi- 
mation to the Lepidoptera. 
TIIE ABDOMEN. 
There are ten uromeres; ten terg- 
ites, the first very short and trans- 
versely linear, the sixth to tenth nar- 
row; there are seven urites, very narrow, as long as broad. 
