New Species of Sicrola, With Explanatory Notes. 155 
sides of the head flat, the former a little foreshortened medially, as wide as 
long, narrowing posteriorly, anterior and posterior margins arcuately concave ; 
propodeum rugulose; abdomen ovate, apically acuminate, smooth and _ pol- 
ished; wings subinfuscate, with a faint yellowish brown pigmentation; length 
2.25 mms. 
Described from one female (type) collected on Kau, Hawaii, a-a flows, 
3600 ft. elevation, by W. M. Giffard, July 18, rors. 
Type: Cat. No. 164, Bishop Museum. 
165. Sierola waianacana n.sp. 
9 dull shining black, legs and antenne brown to fuscous, mandibles 
reddish apically. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; finely, shallowly and fairly closely punctate but not 
uniformly so; hairy clothing short and inconspicuous. Head considerably 
longer than wide, widest across the eyes, narrowing behind and in front, 
width between the eyes greater than the length from eye to vertex; flatly 
convex above, depressed in front, a little tumid beneath; vertical margin 
straight, temples rounded, eyes convex; antenne reaching the mesoscutum, 
all the segments longer than wide, antennal fosse deep; clypeus carinate, api- 
cally depressed and bluntly pointed, not projecting in front of the anterior 
margin of the head, which is angulate, not transverse, declivous at the sides; 
mandibles fairly slender, bent at the middle, the distal portion flattened, 
truncate apically and toothed, base touching the eye above; gula and sides 
of the head flatly convex, the former medially foreshortened, as wide as 
long, a little depressed along the median line, anterior and posterior margins 
arcuately concave; propodeum finely rugulose; abdomen ovate, smooth and 
polished; wings subinfuscate, with a very faint yellowish brown pigmenta- 
tion; length 2.25 mms. 
Described from one female (type) collected in the Waianae Mountains, 
Oahu, by D. T. Fullaway, March 5, 1ort. 
Type: Cat. No. 165, Bishop Museum. 
166. Sierola distinguenda n.sp. 
@ dull shining black, legs and antenne basally yellowish brown, the 
antenne fuscous outwardly, mandibles marked with red. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture; fairly coarsely, shallowly and closely punctate; hairy clothing short 
and delicate. Head a little longer than wide, widest across the eyes, nar- 
rowing behind and in front, width between the eyes greater than the length 
from eye to vertex by a half; convex above, depressed in front, a little 
tumid beneath; vertical margin slightly convex, temples rounded, eyes con- 
vex; antenne reaching the mesoscutum, all the segments longer than wide, 
pedicel and first funicle segment twice as long as wide, antennal fosse deep; 
clypeus carinate, apically depressed, hardly projecting in front of the anterior 
margin of the head, which is angulate, not transverse, declivous at the sides, 
the carina extending backward shortly on the top of the head; mandibles 
slender, curved, a little flattened outwardly, truncate apically and toothed, base 
not reaching the eye; gula and sides of the head flatly convex, the former 
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