New Species of Sierola, With Explanatory Notes. 105 
hairy. Head a little longer than wide, widest across the eyes, narrowing 
behind and in front, width between the eyes considerably more than the 
length from eye to vertex; convex above, depressed in front, tumid beneath, 
the greatest depth beneath the posterior end of the eye; vertical margin 
slightly concave, temples rounded, eyes flatly convex; antenne reaching the 
mesoscutum, the segments of the flagellum all longer than wide, pedicel twice 
as long as wide, and the first funicle segment nearly so, antennal fossz 
deep: clypeus carinate, apically depressed and projecting slightly in front of 
the anterior margin of the head, sloping at the sides, the carina extending 
backward on the top of the head beyond the base of the antennz; mandibles 
fairly stout, bent near the base, the distal portion twisted and flattened, api- 
cal margin obliquely truncate and toothed, base touching the eye above; gula 
and sides of the head flat, the former medially very much foreshortened, 
wider than long, anterior margin arcuately concave, posterior margin incised ; 
propodeum rugulose; abdomen short ovate, smooth and polished; wings 
subinfuscate, with a rather faint yellowish brown pigmentation; length about 
3 mms. 
Described from one female (type) collected at Puuwaawaa, N. Kona, 
Hawaii, 3700 ft. elevation, by W. M. Giffard, August, 1917. 
Type: Cat. No. 65, Bishop Museum. 
66. Sterola opaecula n.sp. 
@ shining black, antennze brown, outwardly fuscous, tibiz and tarsi yel- 
lowish brown to fuscous. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; finely and fairly closely punctate; hairy clothing short 
and inconspicuous. Head nearly twice as long as wide, width between the 
eyes equalling the length from eye to vertex; convex above, depressed in 
front, a little tumid beneath; vertical margin nearly straight, temples round- 
ed, eyes flatly convex; antenne not much longer than the head, the pedicel 
a little longer than wide, following segments as wide as or wider than long, 
antennal fosse deep; clypeus short, carinate, apically depressed and project- 
ing slightly in front of the anterior margin of the head, sloping at the sides, 
the carina extending backward on the top of the head to the base of the 
antenne; mandibles slender, curved, truncate apically and toothed, base 
touching the eye above; gula and sides of the head rather flat, the former 
medially foreshortened, as wide as long, narrowing behind where it is 
inconspicuously divided into two lobes by a shallow median depression, ante- 
rior margin arcuately concave, posterior margin incised; propodeum finely 
rugulose; abdomen elongate ovate, smooth and polished: wings ‘subinfus- 
eate, with a faint yellowish brown pigmentation; length 2.25 mms. 
Described from one female (type) collected at Opaeula, Oahu, by D. T. 
Fullaway, March 30, 109013. 
Type: Cat. No. 66, Bishop Museum. 
67. Sierola mandibularis n.sp. 
2 shining black, antenne basally brown, fuscous outwardly, apex of the 
femora, tibiz and tarsi yellowish brown. 
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