542 
ME. H. N. EIDLEY ON THE 
It plays a very important part in the fertilization of the flowers, 
especially the Cucurbitacem. 
30. Halicttjs laivipyga, n. sp. 
Female. Long. corp. 10 millim. ; exp. al. 16 millim. 
Head and thorax dark green, slightly bronzed ; abdomen 
shining, shading into violet at the extremity of the segments ; 
wings hyaline ; legs black, clothed with pale hairs. 
Head and face finely and closelv punctured, sparingly studded 
with whitish hairs, dark green, occasionally shading into bronzy 
or violet in certain lights ; clypeus green or violet-black, with 
much larger and fewer punctures than the upper part of the 
head; the extremity and the labrum black, the lower mouth- 
parts dull bronzy green ; antennae black, ferruginous towards the 
extremity beneath ; thorax dark green, thickly punctured, most 
finely on the prothorax, which shades into bronzy ; metanotum 
and base of abdomen above densely clothed with whitish hairs ; 
■ metanotum with longitudinally diverging striae in front, behind 
deeply and longitudinally concave, with small punctures, the 
intermediate spaces still more finely punctured ; tegulae tes- 
taceous ; wings hyaline, with brown nervures and a slight violet 
iridescence ; pectus dull green, densely clothed with whitish 
hairs ; propectus violet-black ; legs black, with whitish hairs 
above, and the tibiae and tarsi densely clothed wdth red hairs 
beneath ; the knees (very narrowly), spines, and last joint of the 
tarsi mostly reddish. Abdomen smooth and shining, the punc- 
tuation being extremely fine, even under the microscope, and 
densely clothed with short white hairs, except towards the 
extremity of the first two segments ; the segments greenish in 
front and violet-black behind ; towards the extremity the lateral 
bristles are longer ; under surface of abdomen brown, the ex- 
tremities of the segments slightly reddish. 
31. Halictus alteenipes, n. sp. 
6 $ . Long. corp. 11 millim. ; exp. al. 13-14 millim. 
Head and thorax dark green above ; abdomen green, smooth 
and shining, the neighbourhood of the incisions more or less 
violet ; wings hyaline, or slightly clouded in and below the radial 
cell, and towards the extremity of the discoidal cell of the hind 
wings ; legs reddish, the femora and tibiae in the middle, and often 
the last joint of the tarsi dark green or blackish ; clypeus tipped 
