New Species of Sierola, With Explanatory Notes. 157 
Described from one female (type) collected at Kuliouou, Oahu, by 
P. H. Timberlake, June 25, 1916. 
Type: Cat. No. 168, Bishop Museum. 
169. Sierola subcrispa n.sp. 
? dull shining black, almost opaque; legs and antennz basally luteous, 
the femora and antenne apically fuscous. 
Head and thorax to the propodeum with a microscopically fine and 
close reticulate surface sculpture; finely and closely punctate; clothed with 
long silver gray hairs. Head longer than wide by a half, widest across the 
eyes, narrowing behind and in front, 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 
flatly convex; antenne a little longer than the head, pedicel and first three 
funicular segments a little longer than wide, the following segments hardly 
longer than wide, antennal fosse deep; clypeus carinate, apically depressed, 
hardly projecting in front of the anterior margin of the head, which is angu- 
late, not transverse, sloping at the sides, the carina extending backward on 
the top of the head beyond the base of the antennz; mandibles fairly stout, 
curved, truncate apically and toothed, base not quite reaching the eye; gula 
and sides of the head flatly convex, the former medially foreshortened, wider 
than long, depressed slightly along the median line and in front, anterior 
margin nearly straight, posterior margin incised; propodeum finely rugulose ; 
abdomen elliptical, apically acuminate, smooth and polished; wings subinfus- 
cate, with a faint yellowish brown pigmentation; length 2.5 mms. 
Described from one female (type) collected on Manoa Ridge, Oahu, 
by D. T. Fullaway, February 13, 1917. 
Type: Cat. No. 169, Bishop Museum. 
170. Sierola nuda n.sp. 
2 dull black, head almost opaque; legs yellowish brown, the femora 
infuscate, antennze yellowish brown basally, fuscous apically, mandibles red- 
dish brown except at the base. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture, coarser on the head; coarsely, shallowly and remotely punctate; hairy 
clothing short, sparse and inconspicuous. Head a little longer than wide, 
width between the eyes greater than the length from eye to vertex, length in 
front of the eyes not great: convex above, depressed in front, tumid beneath, 
the greatest depth directly behind the eye; vertical margin straight, temples 
rounded, eyes flatly convex; antenne nearly reaching the mesoscutum, pedicel 
and first three funicular segments longer than wide, the following segments 
as wide as long, antennal fosse deep; clypeus carinate, apically depressed, 
hardly projecting in front of the anterior margin of the head, declivous 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 convex, the former medially fore- 
shortened, as wide as long, slightly depressed along the median line, anterior 
and posterior margins arcuately concave; abdomen a little depressed, ovate. 
smooth and polished; wings with a fuscous pigmentation; length 2.5 mms. 
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