New Species of Sierola, With Explanatory Notes. 133 
nearly effaced; propodeum coarsely rugulose; abdomen ovate, smooth and 
polished; wings subinfuscate; length 3 mms. 
Described from one female (type) collected on Mt. Kaala, Oahu, by 
P. H. Timberlake, July 4, 19106. 
Type: Cat. No. 120, Bishop Museum. 
121. Svzerola vulcana n.sp. 
@-shining black, the legs and antenne fuscous, trochanters, apex of 
femora, tibie and tarsi brown. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; coarsely, shallowly and fairly closely punctate, and 
hairy. Head nearly as wide as long, width between the eyes twice the 
length from eye to vertex, length in front of the eyes not great; flat above, 
depressed in front, convex beneath; vertical margin straight, temples rounded, 
eyes flatly convex; antenne reaching the scutellum, all the segments twice 
as long as wide, antennal fosse 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 stout, curved, truncate apically and 
toothed, base not reaching the eye above, lower lobe protuberant; gula flatly 
convex, medially foreshortened, wider than long, anterior margin arcuately 
concave, posterior margin incised; propodeum finely rugulose; abdomen 
ovate, apically acuminate, smooth and polished; wings with a yellowish 
brown pigmentation; length 3 mms. 
Described from one female (type) collected at Kilauea, Hawaii, lumber 
camp, 4000 ft. elevation, by W. M. Giffard, July 10, 1918. 
Type: Cat. No. 121, Bishop Museum. 
122. Sierola nigrans n.sp. 
@ dull shining black, the legs outwardly fuscous. 
Head and thorax with a microscopically fine and close reticulate sur- 
face sculpture; finely, shallowly and fairly closely punctate, and hairy. Head 
as wide as long, width between the eyes nearly twice the length from eye 
to vertex, length in front of the eyes not great; flatly convex above, depressed 
in front, a little tumid beneath; vertical margin straight, temples rounded, 
eyes convex; antennz reaching the scutellum, all the segments longer than 
wide, antennal fosse deep; clypeus carinate, apically depressed and _ pro- 
jecting 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 antennze; mandibles slender, curved, truncate apically and 
toothed, base not quite reaching the eye; gula and sides of the head flat, 
the former medially foreshortened, wider than long, narrowing behind, ante- 
rior margin arcuately concave, posterior margin incised, median groove nearly 
effaced; abdomen ovate, reticulately sculptured and shining; wings infuscate, 
with a faint fuscous pigmentation; length 2.75 mms. 
Described from one female (type) collected at Kahuku, Kau, Hawaii, 
1800 ft. elevation, by W. M. Giffard, January 14, 19109. 
Type: Cat. No. 122, Bishop Museum. 
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