A NEW GENUS OF NEUROPTERA. 443 
much resembles some pale larva of a Forficula, but is more slender and more lithe, nearly 
linear, depressed, broadest behind the middle of the abdomen. The porrected head is 
oblong-quadrate, with the angles rounded off, larger than the thoracic segments singly ; 
no vestige of eyes: the antenne inserted close to the anterior margin or epistoma, ap- 
proximate; longer than the head and thorax, gradually tapering to the end; of more 
than thirty joints; the first two more distinct, but scarcely longer than the rest, which 
are thickly pubescent, and verticillate with long hairs about the middle; the joints near 
the middle of the antennz usually transverse, the preceding ones turbiniform. The 
mouth is situated in the anterior half of the head, on the under side, only the tips of the 
palpi (and of the maxillee when these are opened) projecting a very little beyond the 
rounded entire margin of the epistoma. The parts of the mouth are formed nearly on 
the same type as in Campodea; the labrum transversely semielliptic, entire, membra- 
naceous; the mandibles membranaceous, except at the tip, oblong, the tip slightly 
incurved and obliquely truncated, the truncature armed with four teeth.  Maxillze broad 
at the base, much attenuated beyond the middle, faleate, acute; the inner edge armed 
with four very slender, acute, faleated, membranaceous rays, which are very minutely 
ciliated along the concave edge. The labium, at the base connate with the maxille, is 
broad, and ends in four short lobes; the exterior ones, or paraglossee, somewhat horny 
along the back, with the apex attenuate obtuse, and the inner margin sinuated; the 
intermediate lobes are again subdivided by a slight incision, each into two rounded 
divisions ; a very slender membranous style, crowned with two hairs, sometimes projects 
between them,—the analogue probably of the hypopharynx. 
The palpus, inserted at the back of the exterior lobe, and scarcely extending beyond 
the extremity of this, is two-jointed; the joints nearly equal in length, the second some- 
what conical. 
The prothorax is transverse, narrower than the head or the succeeding thoracic seg- 
ments, and much shorter; these two are quadrate-orbicular, larger than the anterior 
abdominal segments, having below a broad pentagonal sternum. The legs are distant, 
with coxa, trochanter, femur, tibia, and tarsus distinct; the femur about as long as the 
tibia, but stouter; the latter unarmed at the tip; the tarsus shorter than it, oblong, 
bearing at the end two equal, faleate, acute unguiculi, much shorter than the tarsus ; ne 
distinct arolium. The fore pair of legs are the shortest, and arise close to the hind 
angles of the head; the hind pair the longest, yet not extending back beyond the middle 
of the abdomen. The abdomen is composed of ten segments (if we reckon the segment 
succeeding the metathorax, and complete with a ventral half-ring, the propodium, as 
belonging to the abdomen) ; it is broadest behind the middle, and the segments are of 
nearly equal length, except the last two; the penultimate one very short (often. retracted 
entirely in dried specimens), and widely interrupted beneath, no ventral half-ring being 
visible, but only the inflected margins of the dorsal portion appearing as a lateral 
triangle; the last segment is much the largest, oblong-quadrate, almost truncated behind, 
but advancing a little in the middle in a very obtuse angle, which is notched on the 
Upper side but entire below. The forceps, nearly as long as this segment, is composed 
_ Of two equal arms, broad at the base, so as nearly to occupy, with their insertion, the 
