132 
Psyche 
[Sept. 
tending np to the vertical triangle. The first and second 
segments of the antennae are black ; the third is black ex- 
cept at the extreme base which is slightly reddish; sec- 
ond segment longer than the first; the third segment is 
distinctly, obliquely truncate dorsoapically, with a single 
basal pore laterally and another medially. The arista is 
brownish yellow basally, paler distally and somewhat 
thickened, except that the apex is quite fine. Thorax: 
mesonotum dull black with a distinct, medial, yellowish 
grey pollinose vitta which becomes more narrow and is 
almost evanescent as it reaches the scutellum. There 
is a diagonal band of yellow tomentum on the inner bor- 
der of the humeri which does not extend to the lateral 
margin and which becomes wider medially. It is not 
clearly bordered by opaque black except in an oblique 
light. The transverse suture is bordered with yellow to- 
mentum rather widely and evenly from its medial end 
past the notopleura to the extreme lateral margin and 
there is a prescutellar band uniform in width of thick- 
ness equal to the one upon the transverse suture. The 
scutellum is black basally becoming diffusely brown pos- 
teriorly, the pile abundant and of varying length and 
black except for a few pale hairs on the margin. The 
pleura are black with the whole sternopleura, the an- 
terior half of the hypopleura and the posterior border of 
the mesopleura densely pale yellow pubescent or polli- 
nose and with a thick, vertical, middle band of long, fine, 
pale yellow pile with crinkled ends. This long yellow 
pile is situated on the posterior part of the mesopleura, 
the pteropleura and the upper sternopleura. Squamae 
brown with dark sepia brown border and fringe. Hal- 
teres orange yellow. Legs: the femora are black, the 
hind pair greatly thickened and becoming diffusely red- 
dish brown upon the outer third. The entire ventral sur- 
faces of these femora are also reddish. The anterior 
tibiae are dark reddish brown becoming black anteriorly 
and their tarsi are nearly black. The middle tibiae are 
entirely reddish brown, their tarsi dark reddish brown 
and the hind tibiae and tarsi also entirely brownish red. 
The pile of the hind tibiae is golden in color, the dorsal 
