128 New Species of Sierola, With Explanatory Notes. 
wings subinfuscate, with a faint yellowish brown pigmentation, radial cell 
incomplete; length 2.75 mms. 
Described from one female (type) collected at Kilauea, Hawaii, 20 
miles, by W. M. Giffard, January, 1915. 
Type: Cat. No. 110, Bishop Museum. 
111. Sierola puuwaawaa u.sp. 
9 shining black, legs and antenne basally yellowish brown, the latter 
fuscous outwardly from the scape. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, very delicate on the thorax; coarsely and somewhat 
remotely punctate; hairy clothing short and inconspicuous. Head as wide 
as long, widest across the eyes, narrowing behind and in front, width between 
the eyes greater by a half than 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, antennal fosse deep; clypeus carinate, api- 
cally 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 shortly on the top of the head; mandibles fairly slender, 
curved, truncate apically and toothed, base not quite reaching the eye above, 
lower lobe protuberant; gula and sides of the head convex, the former 
medially foreshortened, as wide as long, anterior margin nearly straight, 
posterior margin incised; propodeum rugulose, a triangular area at the base 
smooth; abdomen elongate ovate, apically acuminate, smooth and polished; 
wings subinfuscate, with a faint fuscous pigmentation; length 2.75 mms. 
Described from two females (type and paratype) collected at Puuwaa- 
waa, N. Kona, Hawaii, 3700-3800 ft. elevation, by W. M. Giffard, August 24, 
1917. Type numbered 14. 
Type: Cat. No. 111, Bishop Museum. 
112. Sierola minuscula n.sp. 
@ shining black, legs and antennze Iuteous to yellowish brown, mandibles 
reddish brown. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; fairly coarsely and remotely punctate and hairy. 
Head as wide as long, widest across the eyes, narrowing behind and in front, 
width between the eyes a little more than the length from eye to vertex; 
convex above and beneath; vertical margin straight, temples rounded, eyes 
convex; antenne a little longer than the head, pedicel nearly twice as long 
as wide, following segments all a little longer than wide, antennal fossz 
deep; clypeus carinate, apically depressed and projecting slightly in front of 
the anterior margin of the head, which is angulate, not transverse, sloping 
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 convex, nearly flat, a little wider than long, anterior margin 
straight, posterior margin incised, median groove nearly effaced; propodeum 
finely rugulose; abdomen short ovate, smooth and polished; wings hyaline; 
length 1.75 mms. 
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