NEUROPTERA. 
341 
coxa is large, mucli broader than long, subrkomboidal. The mesostig- 
,nata or their peritremes are situated each ou the front aud upper angle 
of the supra-sternite directly in front of the fore wings. 
Folystcechotes. (PI. LVI, figs. 8-15). The plenrites are not so broad 
and short as in Myrmeleon. The supra-sternite is considerably longer 
than broad, the apex toward the wings being conical. The episternum 
is vertically oblong, quite regular, being considerably longer than broad. 
The epimerum is moderately broad, square below. The coxa is moder- 
ately' long, longer than broad; the trocbantine regularly conical. 
Mantispa. (PI. LV, fig. 8.) The flanks of the meso- and metathorax 
are of the same size and general appearance. The episternum aud epi- 
merum are each subdivided more or less regularly into two sclerites. 
The epimerum as a whole is not so wide as the episternum. The coxa 
is large, full, conical ; the trocbantine is minute, short, triangular. 
Metapleurum ( Ascalaplius 1). 
Myrmeleon. (PI. LIV, fig. 9.) Although the meta- are not much 
shorter than the mesopleurites, the episternum (which is subdivided into 
an upper and lower sclerite) is smaller but nearly of the same shape as 
in the mesopleurites, but the cox® are larger and broader in proportion. 
The supra-' 4 >imerite is very different, being as broad as long, not 
widening above, and it is solid, with no membranous area; while the 
iufra-epimerite is a linear, antero posterior ridge becoming triangular 
behind. The coxa is considerably' larger than in the mesothorax. The 
trochantine is one-half smaller than that of the mesothorax. 
Folystcechotes. (PI. LVI, fig. 15.) The meta- are about one-third shorter 
than the mesopleurites. The episteruum is as in the mesothorax, but the 
supra-sternite is fuller, more rounded next to the wings. The epimerum 
is divided into asupra- and iufra-epimerite. The cox® are more rounded 
and globose than in the mesothorax, while the trochantine is smaller and 
not so wide in proportion. 
There is a great difference between the thorax of Folystcechotes and 
Myrmeleon, that of the latter being about twice as long as in the former; 
in both, however, the metathorax is shorter than the mesothorax. 
Mantispa. The metapleurites are a little stouter and thicker than the 
mesopleurites, but have the same structure, though the cox® are consid- 
erably shorter. 
Sternum. 
Ascalaplius f 
Myrmeleon. (PI. LIV, fig. 4.) The prosternum is rudimentary and 
membranous. 
The mesosternum (PI. LIV, fig. 5) is large and well developed, sub- 
cordate, deeply furrowed medially; about two-thirds as long as broad. 
There is no suture between it and the infra-episternite. 
The metasternum (PI. LIV, fig. C) is much smaller than the mesoster- 
num, but from lack of alcoholic specimens I can not here describe it. 
I’olystwchotcs. The prosternum is rudimentary and membranous. 
