APPENDIX. 
121 
Crabro scutellaris. 
Female (length 3 lines). Black: head very delicately punc- 
tured; the stemmata placed in a triangle on the vertex; on each 
side of them is a smooth, shining, oblique depression, which extends 
to the margin of the eyes; between the posterior stemmata is ano- 
ther impressed line, which extends a little beyond them ; from the 
anterior stemma a fourth impressed line extends to the face, which 
is smooth and shining ; the clypeus is covered with silvery pile, and 
has a central carina ; the palpi testaceous, and the mandibles rufes- 
cent at their apex ; the scape yellow in front : the thorax is closely 
and finely punctured ; the metathorax has an enclosed, half-circular 
space, divided down the centre by a longitudinal incisure, which 
passes beyond to the apex of the metathorax ; the enclosed space 
obliquely striated, beyond this it is very delicately transversely 
striate : the collar (6ub-interrupted in the centre), a spot on the scu- 
tellum, the anterior tibiae in front, the intermediate pair at their base 
and apex in front, and the posterior at their base, yellow : the basal 
joint of the tarsi, and the tegulae testaceous ; the intermediate and pos- 
terior tibiae spinose: the wings yellow at. their extreme base, the tegulae 
testaceous : the abdomen is elongate-ovate and subpetiolate, the 
apical segment is coarsely punctured, and the extreme apex testa- 
ceous. 
Hab. — Newcastle. 
Prosopis cornutus. 
Hylaeus cornutus, Smith , Zool. vi. 2204, 5, £ • Kirby , MSS. 
Hylaeus plantaris, Smith , Zool. vi. 2205, fi, $ . 
These insects have been recently reared from the same nest, 
and therefore constitute but one species. 
Halictus fasciatus. 
Halictus fasciatus, Nyland. Act. Soc. Sc. Fenn. 275. 
Female (length 3^ lines). Entirely of a brassy green, except 
the lower part of the face which is black ; the clypeus is smooth and 
shining, and has a few scattered punctures : the entire insect is 
closely and delicately punctate ; the head and thorax have a thin 
scattered white pubescence ; and the posterior margins of the abdomi- 
M 
