NORTH AMERICAN NEUROPTERA. 37 



stripe in front of the eyes, extending also on the sides of the frous. liabium 

 and labial palpi black, the external margin of the latter edged with brown. 

 Occiput yellowish brown, darker on the sides. Eyes behind black, with a single 

 yellowish spot. 



Prothorax blackish, with a dorsal median yellowish spot on both lobes. 



Dorsum of thorax reddish brown, with long, light-colored hairs; a broad, 

 black, median band, which barely attains the summit of the mesotlioracic crest, 

 and a humeral black stripe. Sides brownish, with two broad, oblique, black 

 bands, one in front, the other behind the spiracle. Pectus blackish varied with 

 yellowish. 



Feet black. 



Abdomen black ; dorsum of 3-7 with an elongated, median, dorsal yellow 

 spot ; 2 mostly yellow, a black spot each side at base; the dorsal yellow spot of 

 3 extends to the sides at base. 



Genitalia: viewed from the side (PI. V, fig. 3) the internal branch (a) of the 

 hamule is rather slender, moderately curved, apex acute ; external branch bifid. 

 Viewed ventrally (fig. 4 , the bifid portion of the external branch is seen to have 

 one of its divisions (c) short, straight and directed outwards and upwards,® 

 while the other division (6) is longer and curved inwards and downwards to- 

 wards its fellow of the opposite side, and has a more acute apex. Genital lobe 

 moderate, hairy at apex. 



Superior appendages black, not qnite as long as the last two segments ; viewed 

 from above, each appendage is straight, narrow at the base, becoming somewhat 

 dilated towards the apex, which is acute. Viewed from the side, each forms a 

 convex curve with the convexity upwards, becoming slightly and gradually 

 dilated from a little after the base to the apex, which is obliquely truncated, so 

 that the truncating line forms an obtuse angle with the inferior margin and an 

 acute angle with the superior margin ; inferior margin bears 8 or 9 denticles. 



Inferior appendage not as long as the inferior margin of superiors. Viewed 

 from the side, it forms a concave curve with the concavity upwards, apex slightly 

 recurved. Viewed from below (fig. 2), it is broad, lateral margins straight, almost 

 parallel, apex broad, excised from side to side. 



Wings hyaline. Anteriors with two dark brown basal streaks, the first be- 

 tween the subcostal and median nervules, the second between the submedian 

 and postcostal nervules; both extend from the base to about one half the dis- 

 tance to the first antecubital. Posteriors with a dark brown basal streak between 

 the subcostal and median nervules as far as the first antecubital ; and a dark 

 brown basal spot, whose anterior margin is the submedian nervule, along which 

 it extends to a short distance beyond the basal postpostal cross-vein, whence its 

 external margin runs obliquely to the apex of the membranule. Costa of all the 

 wings yellowish (except at the base, and superior margin of pterostigma), espe- 

 cially for a short distance beyond the pterostigma. Pterostigma dark brown, 

 with a yellow vein at each end, surmounting one and parts of two other cellules. 

 Membranule dusky; 7 antecubitals on anteriors, 6 on posteriors; 7 postcubitals. 

 Two rows of discoidal areolets on anteriors, irregular on posteriors. All discoidal 

 triangles and the internal triangle of anteriors free. No internal triangle on 

 posteriors; no hypertrigonals. One basal postcostal cross-vein placed nearer the 

 base than the first antecubital. 



That is, upwards with respect to the position of the insect when alive. 



