330 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
9 (two types of Burmeister). Vertex and frons reddish yellow 
with metallic blue reflection, clypeus olive, labrum yellowish margin 
obscure, labium luteous, median lobe darker (labeled type); or face 
and lips greenish yellow, frons above and vertex metallic blue, inner 
edge of lateral labial lobes narrowly black (unlabeled type). Eyes 
in contact for a distance as long as the length of the occiput which 
is greenish, or black. Rear of eyes varied with brown and green¬ 
ish, or black. 
Prothorax pale brown. Thoracic dorsum dark brown, a com¬ 
plete pale green antehumeral stripe gradually widening upwards 
and hence wedge-shaped. Sides of thorax pale green or yellow, 
first and second lateral sutures each with a dark brown stripe, the 
latter wider, each stripe somewhat cleft at its lower end by green 
or yellow, the former less oblique in its upper half and uniting at 
its upper end with the brown of the dorsum; stripe of the second 
lateral suture giving off on its posterior margin, rather high up, at 
an acute angle, a straight branch which passes downwards, and on 
the metasternum, there uniting with its fellow of the opposite side 
to form a V, opening posteriorly. 
Legs blackish, 1st femora greenish inferiorly. Spines of the pos¬ 
terior (inner) row of the third tibia shorter and more numerous 
(12) than those of the anterior (outer) row (8). 
Abdomen a little wider at 2 and at 9, dark brown, 2-8 with a 
narrower, longitudinal, yellowish stripe each side from the base 
nearly to the apex of each segment, interrupted by the additional 
transverse carinae on 2 and 3 and sutures on 4-7. A yellow streak 
just above the lateral carinae of 2-9. Appendages black, nearly 
twice as long as 10, straight, tips acute. Median excision in the 
vulvar lamina semicircular. 
Wings clear or pale yellowish throughout, front wings from 
nodus to apex, for entire width, slightly brownish yellow, a deeper 
yellow tinge at base of hind wings reaching half way to the first 
antenodal. Pterostigma dark ocher brown, membranule grayish. 
F. W. 13-14 antenodals, 6-8 postnodals, internal triangle of (one, 
right side of labeled type) two cells, two posttrianguiar rows to 
the level of the origin of the subnodal sector or to that of the 
nodus, then three nearly to the wing-margin, with 5-6 marginal cells. 
II. W. 9-10 antenodals, 8-10 postnodals, two posttriangular 
rows to the level of the origin of the subnodal sector, then increas¬ 
ing to 10-11 marginal cells. 
