196 CRABRONIDA. 
Sectio 1. The petiole of the abdomen long; the second sub- 
marginal cell square. 
Sp. 1. Ltucusris. Fab. 
ater, pubescens, metathorace rugoso, margine obliqué striato, 
abdominis petiolo longo. 
length 33—5} lines. 
Latr. Hist. Nat. 13. 325; Nouv. Dict. 2nd ed. 25. 151; Fab. Piez. 
315. 2; St. Farg. Ency. Méth. 10. 48.1; V.d. Lind. pt. 2. 80. 4. 
Crabro lugubris. Fab. E. S. 2. 302. 30. 
Sphex unicolor. Panz. F. G. 52. 24. 
Cemonus unicolor. Jurine, pl. 11. G. 28. 
lugubris. Jur. p. 214. 
Head black, pilose; the face longitudinally and somewhat 
irregularly striate in front from the vertex to the clypeus, which 
have scattered punctures, those on the vertex decreasing towards 
the occiput ; the whole head loosely covered with long griseous 
hairs, which are longest on the clypeus, mandibles, cheeks, and 
occiput. 
The thorax black, opaque, pilose; the dorsolum having three 
abbreviated, longitudinal, impressed lines in front, and two 
deeper ones on each side parallel with the centre of the epaulet of 
the tegulee ; the whole thorax very coarsely rugose, somewhat less 
in front of the dorsolum; the metathorax having a semicircular 
space at its base enclosed by an elevated ridge at the verge of 
the truncation, and the truncation with a deep fossulet in its 
centre; the pubescence is longest at the sides and apex of the 
metathorax, and towards the collar; the wings are coloured, 
slightly iridescent, with their nervures piceous, and a cloud fre- 
quently occupying the centre of their disk; the legs somewhat 
hairy ; the anterior tarsi slightly ciliated ; and the intermediate 
and posterior tibize subspinose. 
The abdomen black, pubescent, shining; the petiole much 
longer than the remainder of the first segment, much curved, 
and its upper surface very coarsely punctured; the pubescence 
is longest on the petiole and apical segments 9. 
