XXI, CRABRO. 127 
anterior tibie ; the tarsi with their apical joints flavo-ferruginous, 
the anterior pair ciliated on the exterior, and all the tibize spinose. 
The abdomen ovate, black, with five yellow bands ; the second 
more or less interrupted, the third consisting of an ovate trans- 
verse spot on each side, the rest generally entire ¢. 
The ¢ differs in having the clavolet of the antenne subfusi- 
form, their first five joints concave below, the fifth and three 
following serrated on the exterior, and the first and second 
fimbriated within; the collar longitudinally striated, generally 
entirely black, as well as the scutellum; the anterior trochanters 
produced beneath at their apex into an obtuse tooth, their femora 
compressed, irregularly dilated behind and having at their base 
a long broad irregular process convex above, with a transverse 
ridge below just beyond its middle, between which and the apex 
it is transversely concave, the apex itself obliquely truncated, 
and at the base below, in front, a long narrow spine; the anterior 
tibiz dilated behind into an ovate concavo-convex plate; the 
tibie with a black or piceous litura at the knee, in front yellow, 
the plate of a slate colour, fusco-piceous towards the exterior 
margin, and the margin itself testaceous, the superficies sprinkled 
with pale dots; their tarsi also dilated, the first irregularly tri- 
angular and concave above, and the whole tarsus longitudinally 
carinated below towards the front, the apical joint having the 
pulvillus placed near the exterior claw; the interior claw very 
eccentric and considerably larger than its companion, its base 
below produced into a broad flat fornicate appendage, the basal 
joint rufo-testaceous, the rest piceous; the intermediate femora 
flattened within and slightly dilated at their base behind; the 
abdomen, which is subcylindrical, curved downwards at its apex, 
has seven yellow bands, the second and third interrupted, and the 
second the broadest of all and least interrupted, the fourth being 
the narrowest, forming merely a transverse waved line, the band 
on the first segment sometimes but very rarely wanting. 
$ @ in most Cabinets. 
+4 Abundant in most sandy districts in May and June, 
