New Species of Sierola, With Explanatory Notes. 139 
Described from one female (type) collected on Alewa Heights Trail, 
Oahu, by P. H. Timberlake, March 26, 1916. 
Type: Cat. No. 132, Bishop Museum. 
133. Sierola kaalensis n.sp. 
@ dull shining black, the legs, antennz basally and the mandibles except 
at the base luteous, the antennz fuscous outwardly. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, coarser on the head: coarsely and closely punctate, 
the punctuation on the thorax finer; hairy clothing delicate but fairly long. 
Head 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, a little tumid beneath; vertical margin straight, 
temples rounded, eyes convex; antenne reaching the mesoscutum, all the 
segments considerably longer than wide, pedicel and first funicle segment 
twice as long as 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; mandibles fairly 
stout, curved, concayo-convex, truncate apically and toothed, base not quite 
reaching the eye; gula and sides of the head flat, the former medially fore- 
shortened, wider than long, a depression along the median groove poste- 
riorly, anterior margin arcuately concave, posterior margin incised; propo- 
deum finely rugulose; abdomen ovate, smooth and polished; wings hyaline; 
length 2.75 mms. 
Described from one female (type) collected on Kaala Mountain, Oahu, 
by P. H. Timberlake, July 22, 1917. 
Type: Cat. No. 133, Bishop Museum. 
134. Sierola imparata n.sp. 
@ dull shining black, legs, antennz basally and the mandibles yellowish 
brown, antenne outwardly fuscous. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; finely, shallowly and closely punctate, and_ hairy. 
Head 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, a little tumid beneath; vertical margin slightly 
convex, temples rounded, eyes convex; antenne nearly reaching the scu- 
tellum, 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, which is angulate, not transverse, 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 touching the eye above; gula and sides of the head convex, the former 
medially foreshortened, wider than long, anterior margin nearly straight, 
posterior margin incised; propodeum rugulose; abdomen ovate, apically 
acuminate, smooth and polished; wings subinfuscate, with a faint yellowish 
brown pigmentation; length 3 mms. 
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