1949] 
Hull — Genus Volucella 
27 
post calli. This marginal color is moderately light brown ; 
the mesopleura, pteropleura and upper metapleura, are 
similarly brown, but ventrally the pleura becomes black- 
ish. There are some bluish reflections upon the posterior 
half of the mesonotum in the middle and a pair of faint sub- 
lateral shining coppery vittae. The mesonotal pile is 
chiefly black with five longitudinal stripes of shorter yel- 
low pile which are restricted to the anterior half of the 
mesonotum and are best seen in the posterior view. The 
bristles of the thorax and scutellum are black ; the meso- 
pleura with one bristle, the bulbous notopleura with four, 
the post calli with six, the supraalse region with three, 
the prescutellar region with eleven, the scutellar margin 
with fourteen, all of which are strong and more or less 
tuberculate. The scutellum is somewhat flattened and 
concave before the apex but without definite crease. The 
color of the scutellum is dark brown, over the disc which 
is also microgranulate, the base of the scutellum and the 
margin hyaline yellowish brown. Scutellum upon the 
disc with purplish reflections and the disc with very fine 
black hairs, rather long, which seem to proceed from the 
granulations but these hairs are scarce and scattered in 
all of my specimens whereas the granulations are very 
dense. Squamse dark brown with brown fringe and bor- 
der. Legs: the femora are dark reddish brown, the an- 
terior pair and middle pair becoming lighter in color on 
the apical half. The hind pair are almost black especi- 
ally on the dorsal margin. All of the tibiae light coffee 
brown, the hind tibiae somewhat darker and with a sug- 
gestion of a blackish brown post medial band. First 
three segments of anterior and middle tarsi light reddish 
brown, the remaining ones black. Hind tarsi similarly 
colored hut the color a little dark. Pile of legs black. 
Ventral tarsal mats blackish and upon the hind pair deep 
reddish sepia. Wings : with a large, quadrate, dark sepia 
brown spot in the middle of the anterior half, the costal 
and the first basal cells, the subcostal cell brownish yel- 
low. Marginal cell closed with a short stalk. Abdomen : 
first segment black, the remaining segments brilliant 
metallic blue with traces of purple reflections in the mid- 
