100 
Psyche 
[June 
within itself a slender stripe. Antennifer and antennae black, 
the third joint a very deep brown, with a curious lighter 
brown pubescence. The antennifer is about one third the 
length of the first antennal joint, and the first joint is a lit- 
tle longer than the second joint. The second and third joints 
are about equal. The style is long, about two thirds the 
length of the third joint. 
Thorax and pleurae jet black; a large brilliant pale yellow 
spot on humeri, a smaller one just before the base of the 
wing, a spot on mesopleurae, sternopleurae, and a short, simi- 
larly colored stripe on the dorsum on either side posteriorly. 
Scutellum shining yellow, sharply margined with black and 
with a median notch posteriorly. The exceedingly short pile 
of the scutellum is largely black. Halteres light brown. 
Squamae pale yellow. 
Abdomen black, the second, third and fourth segments 
with wide, bright yellow posterior margins, and the last two 
segments with thick, prominent lunulate pollinose markings. 
The second segment on either side with an exceedingly large, 
pale yellow spot. This spot extends toward the middle in 
its own anterior corner, but is rounded off and does not 
meet, and the spot is elongated posteriorly in a medial 
oblique direction almost to the yellow posterior margin of 
the segment. Thus, the lateral margin of the second segment 
is black from the posterior corner almost to the anterior 
corner. Venter black, with prominent yellow cross bands. 
Legs largely light brownish-yellow, the tibiae distally and 
the hind femora on the outer half with a darker brownish 
area. Coxae black. Trochanters dark brown. Wings in- 
fuscated along the anterior edge, more yellowish on the 
basal two-thirds of the margin. 
One female, Susanville, California (July). W. J. Cham- 
berlin collector. Type in the collection of the author. 
A fairly large species not related to any North American 
form with which I am acquainted. In fact, with the broad 
abdomen basally, the very short antennifer and large con- 
spicuous yellow spots on the base of the abdomen the species 
must approach the somewhat generalized hypothetical type 
described by Shannon (Insecutor Inscitise Menstruus, xiii, 
p. 49) . Its short antennifer precludes placing the species in 
