240 
Psyche 
[Dec. 
blackish, the arista black. The pile of the front is fine 
and sparse and black; the sparse facial pile is whitish; 
the pile of the occiput is yellowish brown becoming black 
near the top. Thorax: the mesonotum is moderately 
shining greenish to brassy black; the whole notopleura 
and the humeri and a wide stripe down the pleura are 
light reddish yellow; the postcalli and the scutellum are 
brownish yellow; the scutellum in oblique view appears 
to be darker brown upon the disc, its pile is quite sparse 
and short and blackish with here and there a reddish hair ; 
the ventral scutellar fringe apparently is absent. The 
squamae are dark sepia, the halteres reddish brown. Ab- 
domen: first segment brownish yellow narrowly on the 
posterior margin with a few long, reddish brown hairs 
on the sides of the base; the second segment is sepia 
brown with very obscure, oblique oval spots on each side 
of the middle of the segment enclosed by obscure opaque 
color. The third segment is almost the shape of an equi- 
lateral triangle; it is sepia brown with obscure, reddish 
brown, quite oblique vittae proceeding from the base of the 
segment and running to the sides and then reaching the 
sides of the segment close to the posterior segment. The 
area in the middle behind these vittae constitutes a defi- 
nitely opaque brown triangle in which, however, the pos- 
terior margin is obscure. The fourth segment has a com- 
plete, arcuate, rather narrow but reddish brown band 
which is somewhat lighter than the preceding vittae; the 
area behind is obscurely opaque. The fifth segment is 
obscurely lighter brown in the corners and with a sug- 
gestion of an arcuate opaque band behind. Legs: an- 
terior and middle legs entirely yellow ; basal half of hind 
femora yellow, the apical half brown. The posterior 
tibiae and tarsi are pale reddish brown with dark brown 
pile. Wings: light brownish yellow throughout, the 
pterostigma of a slightly darker shade of yellow brown 
and the apex of the marginal and submarginal cells with 
a more distinctly brown but very diffuse spot which 
shades gradually into the paler color. Alulae well-devel- 
oped though not much wider apically than basally. 
Holotype: a female, La Suiza, Costa Rica, 12-IX; 
Pablo Schild. In the collection of Dr. A. L. Melander. 
