132 CRABRONIDA. 
The abdomen with the centre of the segments somewhat 
thickened, and the last curved downwards ¢. 
$ In my own Cabinet and 
that of Mr. Chant. 
+4 This very distinct and, as far as I can discover, un- 
described species, has occurred in the vicinity of London. 
The 2 I am unacquainted with. It will not come into 
any of St. Fargeau’s genera. 
Sp. 5. vexintatus. Panz. 
niger, capite triquetro, abdomine flavo maculato, antennis fili- 
formis $. 
length 4 lines. 
Panz. F. G. 46.5; Illig. Faun. Etr. 2. p. 149 ; V.d. Lind. pt. 2. 45. 6. 
Crabro clypeatus. Fab. Mant. 1. 296.14; Ent. Syst.2.297.15; Piez. 
312.18; Rossi, F. Etr. 2.90. 880; Oliv. Ency. Méth. 6. 515. 16; 
Latr. Hist. Nat. 13. 323.2; Nouv. Dict. 2 ed. 8. 358. 
Apis clypeata. Schreb. Naturforsch. 15. Pl. 3. fig. 19, 20. 
Thyreus vexillatus. St. Farg. 3. 762. 1. 
Head black, deeply punctured, pubescent, narrower than the 
thorax, triangular above and at the sides, ovate in front, and 
forming a neck behind; a longitudinal depression extending 
from the base of the antennz to the anterior stemma; the an- 
tennz black, with the scape and pedicel yellow in front; the 
clypeus and the inner orbits of the eyes covered with a silvery 
pubescence, which extends to near the vertex. 
Thorax ovate, deeply punctured, prolonged very much in 
front and narrowed, forming with the collar a truncated triangle; 
the scutellum less distinctly punctured and shining; the meta- 
thorax truncated, the centre having a deep longitudinal impres- 
‘sion; the tubercles yellow; the tegule testaceous ; the wings 
fuscous ; the legs yellow with a black spot on the outside of the 
anterior and intermediate femora, the posterior femora also black 
Inside, and the interior of their tibia of a fuscous brown; the 
anterior tibiz slightly dilated on the exterior, as well as the three 
