170 NEUROPTERA. 
Synopsis of the Mexican and Central-American Species. 
A. One pale green antehumeral stripe and a more posterior, superior, 
antehumeral spot, the latter representing the upper end of the second 
antehumeral stripe of AA. 
Males. 
Abdominal segment 10 with a dorsal tubercle, spinulose at tip, one-fourth as 
high as 10 is at its hind margin, somewhat elongated transversely and 
divided by a shallow median emargination into right and left halves. 
Superior appendages slightly shorter than segment 10; in dorsal view : 
outer and inner edges'of each one slightly divergent, each edge almost 
straight, the inner edge a little longer than the outer, owing to the apex 
being truncated slightly obliquely ; in profile view: bent downward shortly 
after the base, apical fourth rather abruptly contracted both above and 
below, the tip being formed by the inner angle of the truncation above 
mentioned and its lower edge bearing 3-4 denticles. Inferior appendage 
about one and one-third times as long as the superiors, directed 
upward, bifid in its apical three-fifths ; each branch regularly tapering, 
about as long as its own width at base and bearing a strong, carinate, 
superior tooth at slightly more than half its length, this tooth conspicuous 
in profile view ; interval between the two branches triangular, distance 
between their tips slightly less than the width of either branch at base. 
Abdomen about 41, hind wing 34mm. . . . . . 1. ee OL camelus. 
Abdominal segment 10 with no dorsal tubercle, a double median group of 
spinules taking its place. 
Superior appendages somewhat longer than segment 10, each one, in dorsal 
view, having the inner edge concave or waved, the outer convex and angu- 
late at two-thirds length, whence the appendage is obliquely truncated 
backwardly and inwardly to forma rather acute apex ; in profile, upper 
and lower edges divergent to the apex, which is emarginated almost in 
a semicircle, thus forming two rather acute tips, only the upper of 
which is clearly visible in dorsal view as the apex. Inferior appendage 
three-fourths as long as the superiors, widely bifid in its apical half, 
branches less divaricate than the superiors, each branch with an acute, 
superior, basal tooth near the outer margin and a bifid apex (seen in 
dorsal view), the outer division of which is the larger and is directed 
laterally outward, while the inner division is directed backward, no 
apical tuft of hairs; right and left edges of inferior appendage slightly 
diverging, so that the distance between the tips of its branches is a 
little more than twice the width of either branch at base, opposite 
edges of the two branches at first subparallel or even converging, then 
widely diverging. Abdomen 39-40°5, hind wing 33-5 mm... . . 2 qguadracies. 
Superior appendages slightly longer than segment 10 (which is greatly 
swollen), similar in dorsal view to those of guadracies ; in profile view : 
directed downward, apex obliquely truncated upwardly (dorsad) and 
