200 CRABRONIDE,. 
sists of his second family, as I consider that the strictest 
rules of nomenclature admit of my using his name for that 
division, which does not furnish a type for a previously 
established genus. 
Sp. 1. unicotor. Latr. 
ater, metathoracis basis limbo levi et summo circumscripto. 
length 2—4+ lines. 
Jurine, p. 214. (2nd family, note, without the synonymes). 
Pemphredon unicolor. Latr. G. 4.84; St. Farg. Eney. Méth. 10, 48. 
3; V.d. Lind. pt. 2. 83. 6. (without the synonymes). 
Entirely black: head pubescent, deeply punctured, the punc- 
tures irregular and somewhat reticulated, becoming strize on the 
face, and but sparingly punctured towards the occiput; a deep 
longitudinal impression extending from the anterior stemma to _ 
the base of the antenne, and the face with a silvery pubescence. 
The thorax black, pubescent ; the dorsolum punctured thickly 
ut its base towards the collar and at the sides, sparingly towards « 
the disk, where it is shining; one or two deep longitudinal 
central impressions at its base, and another short one on each 
side parallel with the epaulet of the tegulee; the scutellum slightly 
punctured ; the metathorax with a subcordate space at its base 
either longitudinally striated or rugose, and enclosed behind by 
a smooth shining limbus distinctly defined on its posterior 
margin; the sides and posterior portion of the metathorax 
rugose and covered with scattered long griseous hairs, and a 
deep fossulet in the centre; the wings slightly coloured (some- 
times fuscous), the nervures piceous ; the legs pubescent, with 
the anterior tarsi slightly ciliated, and the intermediate and 
posterior tibize subspinose. 
The abdomen black, pubescent, punctured; the petiole 
curved, coarsely and deeply punctured above, scarcely longer 
than the remainder of the first segment, and covered with long 
griseous hairs as well as the apical and ventral segments, but 
where they are not so long . 
