Annals of the Transvaal Museum. 
151 
a band on the apex of the third, narrowed in the middle, broadly, roundly 
dilated, laterally, the greater part of the sixth, the band rounded laterally, 
and a small spot on the sides of the second to fifth ventral segments, yellow ; 
legs black ; the greater part of the apical half of the fore femora, the 
apical fourth of the middle, and the tibiae and tarsi lemon-yellow ; the 
apical joints of the fourth front tarsi, and the apex of the basal joint of 
the hinder, rufous; the apical three-fourths of the second joint of the hinder 
tarsi and the whole of the others black ; wings hyaline ; the apex from the 
third transverse cubital nervure black ; the stigma and nervures black ; 
metanotal area rugosely reticulated, furrowed down the centre ; the third 
to eighth and the apical joint of the antennae rufo-fulvous. Female. 
Length, 8 mm. 
Strongly, closely punctured, densely covered with white pubescence ; 
clypeus longish bell-shaped, transverse below, minutely tuberculate in 
the middle ; first abdominal segment three times longer than wide ; basal 
two-thirds of the pygidium strongly, deeply punctured, the punctures 
distinctly separated ; following the punctures is an aciculated space, there 
being a row of punctures on the apex, which is transverse ; the sides and 
apex are bordered by a depression. 
The spot on the base of the second abdominal segment may be absent, 
and there may be narrow — more or less narrow — lines on the sides of the 
fourth and fifth segments. 
Crabro Fab. 
Crabro simillimus Sm. 
Cat. Hym. Ins. Brit. Mus., IV, 393, 7. 
Pretoria. March to July. 
Probably common. The species is a Rliopalum, and is no doubt 
variable as regards the yellow markings, e.g. there may be a transverse 
irregular line on the S3utellum, and the lines on the fourth and fifth 
segments may be absent ; there is a stoutly crenulated furrow at the base 
of the metanotum, which has an indistinct triangular area ; the sides are 
bordered by a furrow ; the area may be more or less striated ; the mandibles 
may be entirely black or have a reddish band near the apex ; ocelli in a 
triangle, the hinder placed opposite the end of the eyes ; they are separated 
from each other by about the same distance as they are from the eyes ; 
the pubescence on the head and thorax is dense. 
Passaloecus Shuck. 
Passaloerus striatijrons , sp. n. 
Black ; the antennal scape except above tubercles, the fore tibiae 
in front and the base of the four posterior pallid yellow ; wings hyaline ; 
the nervures and stigma black ; front slightly depressed, covered closely 
with roundly curved striae ; there is an irregular keel outside it, united to 
the eyes bv some weak transverse striae; the face, clypeus, and outer 
orbits covered with silvery pile ; on the apex of the clypeus, in the centre, 
is a short tubercle ; at the base of the scutellum is a wide, crenulated 
furrow, with a keel in its centre, dividing it into two ; metanotum, except 
