Aculeate Hymenoptera in Oxford Museum. 561 
apices of the coxae, the trochanters, femora, tibiae, and tarsi orange 
red, a broad transverse yellow band on the posterior margin of the 
pronotum spreading on to the anterior margin of the mesonotum 
in the middle, an elongate stain on the posterior tibiae and the 
anterior and intermediate tarsi also more or less washed with pale 
yellow, apical segment of abdomen above white; wings hyaline 
forewing fuscous at apex, veins testaceous. Head as broad as the 
thorax convex in front remarkably flat posteriorly, in appearance 
like the half of a pea; mandibles bidentate at apex, labrum tri- 
angular, clypeus anteriorly arched, raised in the middle by a strong 
transverse carina, that has a sharp vertical carina impinging on 
it in the middle, the latter carina is continued upwards between 
the base of the antennae to the forehead ; ocelli in a triangle on 
the vertex, antennae comparatively short, robust, moniliform, eyes 
large, their inner margins parallel. Thorax very long, a third as 
long again as the abdomen ; pronotum rounded anteriorly and at 
the shoulder, its posterior margin arched ; mesonotum very slightly 
convex, scutellum elongate triangular and laterally strongly com- 
pressed, median segment evenly rounded posteriorly and obliquely 
sloped, a broad very ill-detined longitudinal furrow to apex ; wings : 
forewing the radial cell large pointed at apex, the medial and 
submedial cells of the same length, the basal and 1st transverse 
subbasal nervures therefore interstitial, lst cubital cell about as 
long as the 2nd and 3rd united, 2nd cubital cell quadrate receiving 
the Ist recurrent nervure about three-fourths of its length from 
base, 3rd cubital cell trapezoidal, measured along the cubital 
nervure below it is about twice the width it is at top; hindwing 
the cubital nervure originates before the apex of the submedial 
or anal cell, the cubital nervure at origin therefore not interstitial 
with the transverse anal nervure. Legs short, stout, cylindrical, 
spines large and stout, intermediate inner tibial calcar four-fifths, 
posterior inner tibial calcar three-fourths as long as their respective 
metatarsi, claws of fore tarsi bifid, of intermediate and posterior 
tarsi toothed beneath. Abdomen short and stout. Head, thorax 
and abdomen dull and opaque covered somewhat sparsely with 
short erect pale hairs, these are white and silvery at the apex of 
the median segment and are there longer and denser. 
Length 9 9. Exp. 21 mm. 
Described from a single example. 
5. POMPILUS VINDICATUS, Smith. 
Pad 
Pompilus vindicatus, Sm., Cat. Hym. B.M., in, 1855, 
p, 142. §. 
