of Aculeate Hymenoptera of Japan. 201 
4. Halictus tarsatus. ^ 
Male. Length 2\ lines. The face covered with short 
white pubescence ; the anterior margin of the clypeus 
and the mandibles pale testaceous ; the flagellum fulvous 
beneath ; head rounded, the clypeus scarcely produced. 
The tegulas pale testaceous ; legs rufo-testaceous, with all 
the tarsi, the anterior tibiae, and extreme base of the inter- 
mediate and posterior pairs, pale yellow; wings hyaline 
and iridescent, the nervures testaceous. Abdomen smooth 
and shining, with the apical margins of the segments 
testaceous. 
Hab. — Hiogo. 
5. Halictus cerarius. V 
Male. Length 3 lines. Bright brass-coloured. The 
clypeus produced ; its apical margin, the mandibles and 
the flagellum beneath, excepting the two apical joints, 
yellow. The legs yellow ; the tegula; testaceous ; the 
wings hyaline, the nervures testaceous ; the margins of 
the segments of the abdomen depressed, and thinly fringed 
with short pale hairs. 
Hab. — Hiogo. 
This species closely resembles Halictus tumulorum of 
Europe. 
Genus Nomia, Latr. / 
1. Nomia japonica. 
Length 7 lines. Black : punctured, the abdomen most 
finely so ; the face Avith a griscous pubescence, on the vertex 
and thorax it is fulvous ; that on the legs is also fulvous ; 
the claw-joint of the tarsi ferruginous ; the wings subhya- 
line, the nervures dark fuscous ; a j^ale testaceous spot on 
the tegulte. Abdomen : the apical margins of the seg- 
ments are marginate and deeply depressed; the basal 
margins are also depressed, and have a fine, short, pale, 
downy pubescence ; that on the apical segment is black ; 
beneath, the colour is obscurely piceous, and the margins 
of the segments are ft-inged Avith pale hairs. 
APIDiE. 
(Div. Dasygaste^.) 
Genus OsMiA, Panz. 
\. Osmia Taurus. '^ 
Female. Length 5^ lines. Obscure geneous : the head 
with long fulvous pubescence, inclining to fuscous ou the 
