~190. 
NEUROPTERA. 
CC. Frons with superior black, if present, not T-shaped ; legs pale luteous 
throughout, abdomen not constricted; maximum number of rows of 
_ cells on the hind wings between short sector and supplementary sector 
next below, three: anal triangle of male 38- or 2-celled. Abdomen 
(excl. apps.), ¢°40-44, 2 42-46; apps., ¢ 4°5-5'5, 9 5; hind wing, 
36 384-40'5, Q 37-41; costal edge of pterostigma, front wing, 
3-3°5 mm. : 
BB. Two rows of cells between principal and nodal sectors beginning at, or 
AA. 
proximal to, the level of the proximal end of the pterostigma ; anal loop 
in all the following species as in B ; ventral process of tenth abdominal 
segment of female two-pronged ; anal triangle of male 3-celled. 
D. Superior and inferior surfaces of tibie similarly coloured, pale luteous 
or reddish-yellow. 7 
EE. Costal margin of wings distinctly yellowish or brownish, met- 
epimeron bordered posteriorly with black, abdomen constricted at 
segment 3 (barely 1 mm. wide at the most constricted part in the 
male), inferior appendage of the male two-fifths as long as the 
superiors. Abdomen (excl. apps.), ¢ 48-51, 9 52-54; apps., ¢ 6, 
98; hind wing, 3 47-49, 2 49-50; costal edge of pterostigma, 
front wing, 5-5°5 mm. a 
EE. Costal margin not, or but little, more yellowish than rest of wings, 
mectepimeron not bordered posteriorly with black, abdomen very 
slightly constricted at segment 3 (at least 2 mm. wide at the most 
constricted part in the male, still wider in the female), infcrior 
appendage of the male slightly more than half as loug as the 
superiors. Abdomen (excl. apps.), g 50-54, ¢ 52°5-57; apps., 
$ 65-7'5, ? 63; hind wing, ¢ 47-54, 9 52°5-56; costal edge of 
pterostigma, front wing, 4°5-5°5 mm. eee ee 
DD. Superior and inferior surfaces of the tibiz dissimilarly coloured, the 
former pale yellow, the latter brown or blackish, abdomen constricted 
at segment 3, appendages of both sexes pale yellowish, the inferior of 
the male one-fourth to one-fifth as long as the superiors. Abdomen 
(excl. apps.), ¢ 41-49, 2 51-53°5; apps., d 5, 2 7-7°5 ; hind wing, 
$ 41-50, ? 50-53 ; costal edge of pterostigma, front wing, 3-4°5 mm. . 
Basal subcostal cross-veins usually present, two rows of cells between 
median and short sectors in the terminal fourth of their course, two rows 
of cells between principal and nodal sectors beginning proximal to, or at 
the level of, the proximal end of the pterostigma, abdomen constricted 
at segment 3, superior black on frons not forming a T-spot, anal triangle 
of male 3-celled, ventral process on abdominal segment 10 of female 
2-pronged, wings reddish-brown at base, this colour reaching to the 
arculus, at least on the hind wings, filling the anal triangle of the male 
and the corresponding area of the female. Abdomen (excl. apps.), 
3 55-615, ¢ 615 ; apps., ¢ 6-65, 9 7; hind wing, g 55-59, 2 59-63; 
costal edge of pterostigma, front wing, 5-5-6 mm. 
2. septima,. 
3. mexicana. 
4. nervosa. 
5. tibiata. 
6. membranalis. 
