177 
narrowest at the base, a little longer than the 3rd 
and 4th united; 2nd joint a little longer than 3rd 
and of the same thickness; 2-4 longer and thicker 
than the other joints; the apical 7 more moniliform 
than the others, and a little longer than broad; the 
last longer and thinner than the penultimate. Head 
smooth and slightly alutaceous ; mandibles piceous at 
tip, faintly striated— thorax smooth, a little aluta- 
ceous. The abdominal segments laterally at their 
junction narrowly milk-white. Wings hyaline, stigma 
and prostigma fuscous ; nervures testaceous. Female. 
Length 4 mm. 
Differs from S. testaceipes in being longer and stouter, in 
the antennse being longer, the basal joint being 
longer and more pear-shaped, the other joints also 
not being so thick, nor so moniliform ; in the abdo- 
men being shorter and broader, it being almost 
shorter than the head and thorax united, the seg- 
ments too not being broadly testaceous at their 
edges ; the femora are black ; the head is more 
narrowed in front of the eyes, the wings are longer 
and the nervures are darker. 
Mountains of Hawaii (No. 134). 
62. — SlEROLA LEUCONEURA, noV. 
Black ; the knees, tibiae, tarsi and basal half of antennae, 
testaceous; the hind tibiae fuscous in the middle; 
antennae scarcely so long as the thorax, the basal 
joint shortly pecunculated, double long as wide, 
double the length and thickness of the 2nd, which is 
thinner and shorter than the 3rd, the 3rd to 6th 
thicker than the following, broader than long, the 
apical two joints sub-equal. Head and thorax smooth, 
faintly alutaceous. Abdomen shining, longer than 
the thorax. Wings semi-fuscous; stigma and pro- 
stigma fuscous, nervures lacteous. 
Length, 2 mm. 
