102 
Psyche 
[Sept.-Dee. 
Baccha pandora n. sp. 
Characterized by the prominent yellow vittse of the thorax 
and the pattern of the abdominal spots. Submedial vittae of 
the fourth segment quite large, broadly connected to the an- 
terior triangle. Related to livida Schiner. 
Male. Length 12 mm. Head: the cheeks and face and front 
are pale yellow; just before the antennae there is a sharp black 
oval spot and above this a reddish-brown spot. The rather 
elongate antennae are orange, narrowly brownish above on the 
third joint, the pile black, the arista brown. The pile of the 
front and upper part of face is black, the former largely con- 
fined to the sides of the front. There is a band of white pubes- 
cence along the sides of the face extending narrowly on the 
lower part of the front. There are some white hairs below. 
Thorax: the whole of the pleurae except the extreme ventral 
portion above middle and hind coxae light yellow with a few 
yellow hairs and some yellowish pubescence. The wide margins 
of the mesonotum and the whole of the scutellum, except a 
central transverse brown band over most of its disc, yellow. 
The mesonotum is broadly golden-brownish centrally with three 
stripes of brown and two of yellow pollen, all of about equal 
width. The medial brown stripe is narrowly divided by a 
linear, yellow pollinose vittae which expands posteriorly until 
just before the apex it is as wide as the pointed apical part of 
the two outer vittae. The medial vittae touches the scutellum, 
the others do not. Mesonotal pile sparse, erect and black, a 
few pale hairs before the scutellum and upon the lateral mar- 
gin. Scutellar pile short, erect, quite sparse, appressed laterally, 
the ventral fringe yellow. Abdomen: quite elongate, almost as 
long as the wings and somewhat spatulate, the second segment 
four to five times as long as its central width; it is a little wider 
at base, but the remainder has almost parallel sides. Third 
segment barely over twice as wide apically as basally; the 
fourth segment is not quite as long as wide and a little wider 
apically than basally. The abdomen is dark brown with yellow 
markings. The whole of the first segment is yellow except at 
posterior margin, the posterior corners also yellow. The second 
segment has an hour-glass shaped brown spot beginning a short 
distance away from the base, almost reaching the posterior 
margin and actually reaching this margin laterally. The lateral 
