l65 
well for me to make a brief review of them, interpolating 
descriptions of the new species in my collection. — ( T.B.) 
36.~Crabko affinis. 
Crabro affinis, Smith, Proc. Lin. Soc. XIY., p. 677. 
In this species the eyes are only moderately separated in 
front, and the space between them is not (as compared 
with same space in C. mandibularis) strongly concave 
near the base of the antennae. The punctuation of 
the head is quite evidently (though not at all strongly) 
rugose — especially in the S , — and there are very 
distinct traces of longitudinal strigosity. The eyes 
are facetted excessively finely in both sexes. The 
hind body is rather wide in the middle, thus being 
strongly rounded laterally. 
I possess a single male taken in company with the female 
I sent to Mr. Smith, and clearly conspecific. The 
sexual differences here are very similar to those in 
0. mandihularis, Smith. The mandibles of the male 
are pitchy black, the face and clypeus silvery, the 
basal joint of the antennae reddish pitchy (paler at the 
base) and a little dilated in the middle. The sexual 
character in the 6th joint of the antennae consists in 
little more than an emargination, the apex of the 
joint being scarcely dentate. The 2nd ventral seg- 
ment is not at all flattened, the 3rd scarcely, the 4th 
quite evidently so; the remaining segments are con- 
cave. The yellow bands on the hind body are all 
entire, the basal one very broad, the 2nd narrow, the 
last broad. 
I have no doubt the yellow markings in this species are 
subject to great variety. 
37. —■ Crabro mauiensis. 
G. mauiensis, sp. nov. ? suhnitidus ; puhescens; crehre 
subtiliter punctatus ; niger, flavo-ornatus, clypeo aureo^ 
