156 New Species of Sierola, With Explanatory Notes. 
medially foreshortened, as wide as long, anterior margin arcuately concave, 
posterior margin incised; abdomen short ovate, apically acuminate, smooth 
and polished: wings subinfuscate, with a faint yellowish brown pigmenta- 
tion; length 2.25 mms. 
Described from one female (type) collected on Kaala Mountain, Oahu, 
by D. T. Fullaway, August 11, 1912. 
Type: No. 166, Bishop Museum. 
=~ 9 -_ ’ - 
167. Sierola rufomandibulata n.sp. 
9 dull shining black, legs and antennz yellowish brown, the latter fus- 
cous outwardly, mandibles marked with red. 
Head and thorax to the propodeum with a microscopically fine and 
close reticulate surface sculpture; finely and rather closely punctate, and 
hairy. Head a little longer than wide, width between the eyes a little more 
than the length from eye to vertex; convex above, depressed in front, a 
little tumid beneath; vertical margin straight, temples rounded, eyes convex; 
antenne nearly reaching the mesoscutum, all the segments longer than wide, 
antennal fossz deep; clypeus carinate, apically depressed, not 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, truncate apically and toothed, base 
not quite reaching the eye; gula and sides of the head flatly convex, the for- 
mer medially foreshortened, longer than wide, narrowing behind, very finely 
punctate, median groove nearly effaced, anterior margin straight, posterior 
margin incised; propodeum rugulose; abdomen ovate, smooth and polished; 
wings with a yellowish brown pigmentation; length 2.25 mms. 
Described from one female (type) collected in Manoa Valley, Oahu, by 
O. H. Swezey, July 27, 10913. 
Type: Cat. No. 167, Bishop Museum. 
168. Sierola curiosa n.sp. 
@ dull shining black, legs and antennz apically fuscous, the latter basal- 
ly yellowish brown. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture: fairly coarsely, shallowly and closely punctate; hairy clothing short 
and inconspicuous. Head a little longer than wide, width between the eyes 
a little more than the length from eye to vertex; convex above, depressed 
in front, a little tumid beneath; vertical margin straight, temples rounded, 
eyes flatly convex; antenne a little longer than the head, all the segments 
longer than wide, antennal fosse deep; clypeus carinate, apically depressed 
and bluntly pointed, not projecting in front of the anterior margin of the 
head, which is angulate, not transverse, the carina extending backward 
shortly on the top of the head; mandibles slender, curved, 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, with a shallow 
depression along the median line, anterior margin arcuately concave, poste- 
rior margin incised; abdomen elongate ovate, smooth and polished; wings 
with a shallow yellowish brown pigmentation; length 2 mms. 
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