New Species of Sierola, With Explanatory Notes. QI 
rugulose, opaque; abdomen short ovate, smooth and polished; wings sub- 
infuscate, with a yellowish brown pigmentation; length 3 mms. 
Described from two females (type and paratype). Type collected on 
a-a flow, Kau, Hawaii, 3600 ft. elevation, by W. M. Giffard, July 18, ro18. 
One specimen from Kilauea, Hawaii, collected by W. M. Giffard, June 12, 
1908, and numbered 13, paratype. 
Type: Cat. No. 37, Bishop Museum. 
38. Sierola osborni n.sp. 
@ unusually large; shining black, almost brilliant, antenne and legs 
‘fuscous to black, the middle and hind femora entirely black. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture, fairly closely, shallowly and rather coarsely punctate and hairy. Head 
wider than the thorax, a little longer than wide, width between the eyes 
greater than the length from eye to vertex; convex above and _ beneath, 
without great depth; vertical margin straight, temples rounded, eyes convex; 
antennze longer than the head, all the segments a little longer than wide, the 
pedicel more than twice as long as wide, antennal fosse deep; clypeus re- 
duced by erosion from the sides to a 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 head beyond the base of the 
antenne; mandibles stout, curved, concavo-convex, truncate apically and 
toothed, base reaching the eye above; gula and sides of the head convex, 
the former very much foreshortened medially, transverse, anterior margin 
arcuately, posterior margin semicircularly concave, median groove faintly 
impressed; abdomen ovate, smooth and polished; wings subinfuscate, with 
a faint yellowish brown pigmentation basally; length 3.5 mms. 
Described from one female (type) collected at Kilauea, Hawaii, by 
D. T. Fullaway, May 12, 10913. 
Type: Cat. No. 38, Bishop Museum. 
39. Sierola fuscipennis n.sp. 
2 unusually large; dull black, the head opaque, antenne and legs 
brown, the former fuscous outwardly, the latter with the coxze and femora 
mostly black. 
Head and thorax with a microscopically fine and close reticulate sur- 
face sculpture, closely and finely punctate and hairy. Head a little longer 
than wide, widest across the eyes, narrowing slightly behind and in front, 
width between the eyes considerably more than the length from eye to ver- 
tex; convex above, depressed in front, a little tumid beneath; vertical mar- 
gin slightly convex, temples rounded, eyes convex; antennez a little longer 
than the head, all the segments longer than wide, antennal fosse deep: 
clypeus reduced by erosion from the sides to a carinate ridge, apically de- 
pressed 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 antennze; mandibles stout, curved, concavo-convex, 
truncate apically and toothed, base nearly reaching the eye above; cheeks 
very narrow; gula and sides of the head flatly convex, the former medially 
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