go New Species of Sierola, With Explanatory Notes. 
collected at Puuwaawaa, N. Kona, Hawaii, 3700 ft. elevation, by W. M. 
Giffard, August, 1917. 
Type: Cat. No. 35, Bishop Museum. 
36. Siecrola tantalea n.sp. 
2 unusually large; shining black, antenne, legs and posterior margin 
of the abdominal segments brown, the antennze fuscous outwardly. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture, rather closely and finely punctate and hairy. Head wider than the 
thorax, a little longer than wide, the length from eye to vertex about equal- 
ling the width between the eyes, length in front of the eyes not great; con- 
vex above, depressed in front, a little tumid beneath; vertical margin straight, 
temples rounded, eyes convex; antenne no longer than the head, pedicel a 
little longer than wide, following segments as wide as or even wider than 
long, antennal fosse deep; clypeus reduced by erosion from the sides to a 
longitudinal, carinate ridge, 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 antenne; 
mandibles stout, curved, concavo-convex, truncate apically and toothed, base 
touching the eye above; gula convex, medially foreshortened, wider than 
long, anterior margin arcuately concave, posterior margin incised, median 
groove nearly effaced; abdomen elongate ovate, smooth and polished; wings 
subinfuscate, with a faint yellowish brown pigmentation; length 3.5 mms. 
Described from three females (type and paratypes) collected on ‘Tan- 
talus mountain, Oahu, 1300-1800 ft. elevation. Type, numbered 284, col- 
lected by W. M. Giffard, September 9, 1908. One specimen, collected by 
W. M. Giffard, September 14, 1907, and one labelled Oahu (Koebele), para- 
types. 
Type: Cat. No. 36, Bishop Museum. 
37. Sierola compacta n.sp. 
2 moderately large and thick-set; shining black, the head a little dull, 
antenne brown to fuscous at the base; trochanters, femora apically, tibize 
and tarsi testaceous. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, a little coarser on the head than on the thorax, rather 
closely, coarsely and shallowly punctate, and hairy. Head 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; convex above, depressed in 
front, tumid beneath, deepest under the eye; vertical margin straight, tem- 
ples rounded, eyes convex; antenne reaching the mesoscutum, the segments 
of the flagellum all longer than wide, the pedicel twice, the funicle three 
times as long as wide; antennal fosse deep; clypeus carinate, apically de- 
pressed and projecting a little in front of the anterior margin of the head, 
sloping at the sides; mandibles slender, curved, toothed apically, base not 
reaching the eye; cheeks narrow; gula and sides of the head convex, the 
former medially foreshortened, transverse, anterior margin arcuately con- 
cave, posterior margin incised, median groove nearly effaced; propodeum 
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