146 CRABRONIDA. 
Sphex vaga. Lin. F..S. 1661; Syst. Nat. ed. 12. 946. 36; Villers, 3. 
238, 44; Scheff. Icon. Ins. Rat. pl. 94. fig. 4 & 5; and pl. 127. 
fig. 6. 
Solenius vagus. St. Farg. 3. 722. 9. 
The head black, subpubescent, very thickly punctured ; the 
stemmata placed in a curve; a deep canalicula occupying the 
whole face; the antenne black, with the scape yellow, having 
a black patch behind; the clypeus, which is strongly carinated 
in its centre, covered, as well as the inner orbits of the eyes, 
with a dense silvery pubescence ; the mandibles black, the inner 
margin yellow, and the apex piceous. 
The thorax black, pubescent, thickly punctured; the base of 
the dorsolum with a central and two obsolete lateral carine; 
the metathorax in front longitudinally, and behind transversely 
striate, and having a longitudinal central incisure throughout its 
whole length; the peristethium having on each side, posteriorly, 
a transverse abbreviated carina; the collar with a transverse 
yellow band, frequently wanting, and the post-dorsolum some- 
times. a yellow line in front; the tegule piceous; the wings 
darkish, with their edge darker, the nervures piceous; the legs 
black ; the anterior tibiz yellow above, and ferruginous in 
front, the intermediate pair yellow in frant and above, and the 
posterior ones entirely yellow, the extreme apex of all ferru- 
ginous ; all the tarsi piceous, the anterior pair very slightly 
ciliated, and the intermediate and posterior tibiz spinose. 
The abdomen black, with three yellow bands, one at the base 
of the second segment, the second at the base of the fourth 
segment, and the last at that of the fifth, with every variety of 
interruption, sometimes all entire, the third generally so, and 
the third segment with sometimes a small transverse mark on 
each side ?. 
The ¢ agrees in having apparently the same number of joints 
to the antennz, but the fifth and sixth emarginate beneath ; the 
metathorax irregularly longitudinally striate in front, and trans- 
versely behind; the anterior femora ferruginous above and in 
