142 New Species of Sierola, With Explanatory Notes. 
139. Sicrola illingworthi n.sp. 
Q dull shining black, trochanters, tibia, tarsi and antenne yellowish 
brown to fuscous. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, a little coarser on the head; finely and fairly closely 
punctate, and hairy. Head wider than the thorax, nearly as wide as long, 
widest across the eyes, narrowing behind and in front, width between the 
eyes twice the length from eye to vertex; flat above, tumid beneath ; verti- 
cal margin straight, temples rounded, eyes convex; antenna reaching the 
mesoscutum, all the segments considerably longer than wide, antennal fosse 
deep; clypeus carinate, apically depressed and projecting slightly 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 stout, curved, concavo-convex, truncate apically and toothed, base 
not reaching the eye; gula flat, medially foreshortened, wider than long, 
narrowing posteriorly where there is a slight depression along the median 
line, anterior margin nearly straight, posterior margin incised, sides of the 
head convex; propodeum rugulose: abdomen elliptical and somewhat de- 
pressed, apically acuminate, smooth and polished; wings subinfuscate, with 
a faint yellowish brown pigmentation; length 3 mms. 
Described from one female (type) collected on Kau, Hawaii, a-a flows, 
elevation 3600 ft., by W. M. Giffard, July 18, 1018. 
Type: Cat. No. 139, Bishop Museum. 
140. Sierola nemorensis n.sp. 
2? dull shining black, legs and antenne yellowish brown to fuscous. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture, very delicate on the thorax, especially on the scutellum and propodeum, 
coarser on the head; fairly closely and coarsely punctate, and hairy. Head 
nearly as wide as long, width between the eyes considerably more 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 a little longer than the head, pedicel longer than wide, the following 
segments as wide as or wider than long, antennal fosse deep; clypeus cari- 
nate, apically depressed and projecting slightly in front of the anterior mar- 
gin of the head, which is angulate, not transverse, sloping at the sides, the 
carina extending backward on the top of the head beyond the base of the 
antenne; mandibles stout, curved, truncate apically and toothed, base not 
quite reaching the eye; gula and sides of the head convex, the former 
medially foreshortened, wider than long, median groove nearly effaced, ante- 
rior and posterior margins arcuately concave; abdomen ovate, smooth and 
polished; wings subinfuscate, with a faint fuscous pigmentation: length 
2.75 mms. 
Described from two females (type and paratype) collected on Hawaii 
by Koebele. 
Type: Cat. No. 140, Bishop Museum. 
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