116 New Species of Sierola, With Explanatory Notes. 
87. Sierola lugens n.sp. 
9 shining black, a little dull on the head, legs and antenne luteous, 
mandibles yellowish brown. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture, a little coarser on the head; finely, closely and shallowly punctate, and 
hairy. Head wider than the thorax, a little longer than wide, widest across 
the eyes, narrowing a little behind and in front, width between the eyes 
greater than the length from eye to vertex; flat on top, depressed in front, 
a little tumid beneath, deepest under the posterior end of the eye but without 
great depth; vertical margin straight, temples rounded, eyes flatly convex; 
antennze not much longer than the head, pedicel nearly twice as long as wide, 
the following segments scarcely longer than wide, antennal fosse deep; cly- 
peus carinate, apically depressed and projecting slightly in front of the ante- 
rior margin of the head, sloping at the sides, 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 flat, the 
former medially foreshortened, as wide in front as long but narrowing behind 
where the margin is incised and the median line a little depressed, anterior 
margin straight; abdomen a little depressed, elongate ovate, smooth and 
polished; wings with a faint yellowish brown pigmentation; length 2.75 mms. 
$a little smaller, the head shorter and hardly as flat, the abdomen 
bluntly pointed apically. 
Described from one female and two males (type, allotype and paratype) 
collected at Opaeula, Oahu, by D. T. Fullaway, March 30, 1913. 
Type: Cat. No. 87, Bishop Museum. 
88. Sierola swezeyi n.sp. 
@ shining black, the head a little dull; trochanters, tibia, tarsi and 
antennz basally yellowish brown, the last fuscous outwardly. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, a little coarser on the head: fairly closely and coarsely 
punctate; hairy clothing long, thin, and delicate. Head a little longer than 
wide, width between the eyes greater than the length from eye to vertex; 
convex above, tumid beneath; vertical margin straight, temples rounded, eyes 
flatly convex; antennz reaching the scutellum, all the segments considerably 
longer than wide, antennal fossze deep; clypeus carinate, apically depressed 
and projecting slightly in front of the anterior margin of the head, declivous 
at the sides, the carina extending backward on the top of the head beyond 
the base of the antenne; mandibles slender, curved, truncate apically and 
toothed, base not quite reaching the eye: gula and sides of the head flat, the 
former medially foreshortened, longer than wide, narrowing behind, anterior 
margin nearly straight, posterior margin incised; propodeum finely rugu- 
lose; abdomen ovate, smooth and polished; wings subinfuscate, nearly hya- 
line; length 2 mms. 
Described from one female (type) collected on Konahuanui Peak, 
Oahu, by O. H. Swezey, February 23, 1914. 
Type: Cat. No. 88, Bishop Museum. 
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