PSEUDONEUROPTERA. 
325 
backwards. From the tenth urosome apair of long, maltiarticnlate ccr- 
copoda arise from broad basal ioints or flaps, forming lateral anal plates. 
Psocedae. Plate XXXIX, XLIII. 
THE nEAD. 
Psocus novce-scotkeS “ (PI. XXXIX, figs. 6-8.) The head is in its 
structure allied to that of the Perl id®. Epicrauium horizontal, nearly 
as long as broad, being square on the sides. Ocelli situated close to- 
gether between the eyes. Olypeus very large and swollen, situated be- 
tween the antennae; in front is a semi-membranous division, which may 
be the aute-clypeus; this sclerite is not quite so wide as the large, broad 
labrum. The gular region and mentum are broad. 
THE THORAX. 
Xotum. 
Pronotum (Psocus novw-scoticc Walk). Very small, depressed, over- 
lapped by the heade, bing much reduced in size compared with the 
Perl id®. 
Mesonotum (PI. XLIII, fig. 10) very high and convex ; seen from above, 
much rounded in front. Praescutum large, prominent, high and rounded, 
subcordate, but with no median impressed line. 
Scutum very short and broad, deeply excavated in front for the 
reception of the praescutum; each side is much swollen, the swollen 
areas being separated by the broad median impressed line. 
Scutelluin small and short, three or four times as wide as long, with 
a median acute angle in front, and augulated on each side anteriorly; 
while from each posterior angle a high narrow ridge diverges to the 
hinder part of the insertion of the fore wing. No postscutellum is 
visible. 
Metanotum (Fig. 11) small, one-half as long as the mesonotum. The 
prsscutum is very small, subtriangular, broad and short, depressed. 
Scutum one-quarter as long as broad, consisting of two inflated halves, 
with a median impressed line. 
Scutelluin minute, rudimentary, somewhat rounded. 
Pleurum. 
Propleurum. The episternum and epimerum rudimentary, though 
rather long ; while the coxa and trochautiue are large and long, being 
well developed. 
M esopleurum. (Fig. 12.) Episternum and epimerum long and narrow ; 
not oblique, but vertical ; the episternum a little thicker than the epi- 
merum. 
164 A large species of Psocus inhabiting coniferous trees in Maine; kindly identified by Dr. Hagen. 
