New Species of Sicrola, With Explanatory Notes. 151 
and sides of the head flat, the former medially foreshortened, as wide as 
long, narrowing behind, anterior margin arcuately concave, posterior margin 
incised; propodeum rugulose, with a narrow triangular area medially at the 
base smooth; abdomen ovate, apically acuminate, smooth and polished: wings 
hyaline; length 2.25 mms. 
Described from one female (type) collected on Tantalus Mountain, 
Oahu, by O. H. Swezey, March 16, 1015. 
Type: Cat. No. 156, Bishop Museum. 
157. Sterola perkinsi n.sp. 
@ shining black, legs and antenne basally yellowish brown, front and 
hind femora and antennz outwardly fuscous, mandibles outwardly reddish 
brown. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; fairly coarsely and closely punctate; clothed with 
delicate silver gray hairs. Head a little longer than wide, widest across the 
eyes, narrowing behind and in front, width between the eyes greater by a 
half than the length from eye to vertex; flatly convex above, depressed in 
front, tumid beneath, the greatest depth directly behind the eye; vertical 
margin straight, temples rounded, eyes convex; antenne reaching the meso- 
scutum, all the segments longer than wide, pedicel twice as long as wide, 
antennal fosse deep; clypeus reduced by erosion from the sides to a thin 
carinate ridge, apically depressed, hardly projecting in front of the anterior 
margin of the head, which is angulate, not transverse, the carina extending 
backward on the top of the head beyond the base of the antennze; mandibles 
slender, curved, truncate apically and toothed, base touching the eye above; 
gula and sides of the head flat, the former a little foreshortened medially, 
longer than wide, narrowing behind, anterior margin arcuately concave, pos- 
terior margin incised; abdomen ovate, apically acuminate, smooth and _ pol- 
ished; wings subinfuscate, with a faint yellowish brown pigmentation : 
length 2.25 mms. 
Described from one female (type) collected at Kilauea, Hawaii, dry 
forest, 4000 ft. elevation, by W. M. Giffard and F. Muir, November 1, 1917. 
Type: Cat. No. 157, Bishop Museum. 
158. Sicrola perottetiae n.sp. 
F 2) 
Q shining black, the legs and antenne fuscous except the scape, pedicel, 
trochanters, tibia and tarsi, which are yellowish brown. — 
Head and thorax to the propodeum with a microscopically fine and 
delicate reticulate surface sculpture; coarsely, shallowly and remotely punc- 
tate; hairy clothing short and inconspicuous. Head longer than wide by a 
third, width between the eyes greater than 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 
flatly convex; antenne not much longer than the head, pedicel and first 
funicle segment longer than wide, the following segments as wide as or 
wider than long, antennal fosse deep; clypeus carinate, apically depressed, 
hardly projecting in front of the anterior margin of the head, declivous at 
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