154 NEUROPTERA. 
with a median dorsal yellow stripe, yellow on the sides confined to the 
basal third or less. 
C. Dilated lateral margins of seg. 9 curved throughout, superior appendages 
with a superior anteapical tooth; at most two rows of cells between the 
second sector of the triangle and the hind margin on the front wings 
and three rows on the hind wings; abdomen 36, hind wing 27mm.. . 1. volsella. 
CC. Dilated lateral margins of seg. 9 angulate near the base, superior 
appendages with a superior anteapical angulation; at least three rows 
of cells between the second sector of the triangle and the hind margin 
on the front wings and four rows on the hind wings; abdomen 46-47, 
hind wing 88-86 mm... 2 1. 1 1 ee ee ee ww 8, elongata. 
BB. Abdominal segment 10 with a postero-inferior lateral projection on each 
side; 3-6 (in the adults) with a median dorsal black stripe, yellow on 
the sides reaching almost the entire length of the segments; superior 
appendages with no superior teeth. 
D. Posterior dorsal margin of abd. seg. 10 entire. 
E. Dilated lateral margin of 9, viewed in profile from the side, showing a 
double curvature, first convex then concave; abdomen 48-51, hind 
wing 386-38 mm. . . oe . . . . 9& protracta. 
EE. Dilated lateral margin of 9, viewed i in profile from the side, showing 
but a single curvature, convex throughout; abdomen 46-49, hind 
wing 36-38 mm... . ae . 2 « . « [ producta *.] 
DD. Posterior dorsal margin of abd. seg. 10 with a | median truncation, 
dilated lateral margin of 9 as in producta; abdomen 35, hind wing 
o2mm. . . [tenuis *.] 
DDD. Posterior dorsal margin ‘of abd. seg. 10 with ¢ a distinct median notch 
abdomen 42-49, hind wing 85-88 mm. . . . . woe ew ew 4 ambigua. 
AA. Inferior abdominal appendage one-third to one- fourth as long as the 
superiors, bifid, superior appendages with a superior tooth at about two- 
thirds their length ; abdominal segment 10 with no postero-inferior lateral 
projections, 8-6 (in the adults) dark brown or black with a median dorsal 
yellow stripe, the yellow on the sides confined to the basal third or less. 
F. Abdominal segments 8-10 blackish on dorsum, sides of the thorax with 
three pale stripes . . . . . : ee - . . 6. suasa. 
G. Labrum bordered and crossed with black, costa blackish anteriorly, second 
yellow antehumeral stripe usually complete ; abdomen 47-49, hind wing 
37-39 mm. . . » 2 « . Suasa type. 
GG. Labrum bordered (but not crossed) with black, costa ‘yellow anteriorly, 
second yellow antehumeral stripe interrupted, consisting of a line below 
and a large point above; abdomen 43-45, hind wing 35-37 mm. (From 
de Selys’s description.) . . . . .. ... ei. we we race pacifica. 
* G. producta, of South America and Cuba, and G. tenuis, of Colombia and Guiana, are closely allied species 
which may hereafter be found within the present faunal limits: for references to descriptions, see Mr. Kirby’s 
‘ Catalogue,’ p. 74. 
