New Species of Sierola, With Explanatory Notes. 1oy 
73. Sierola tumidoventris n.sp. 
@ shining black, antenne and legs brown to fuscous. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture; fairly closely, shallowly and finely punctate; hairy clothing rather 
short and delicate. Head wider than the thorax, longer than wide by a half, 
width between the eyes equalling the length from eye to vertex, length in 
front of the eyes not great; somewhat flat above, convex beneath; vertical 
margin straight, temples rounded, eyes convex; antenne scarcely longer 
than the head, pedicel about twice as long as wide, following segments as 
wide as or wider than long, antennal fosse deep; clypeus carinate, apically 
depressed and projecting slightly in front of the anterior margin of the head, 
declivous at the sides, the carina extending backward a little on the top of 
the head; mandibles stout, curved, concavo-convex, truncate apically and 
toothed, base touching the eye above; gula convex, a little foreshortened 
medially, anterior margin arcvately concave, posterior margin incised; abdo- 
men elongate ovate, smooth and brilliantly polished, somewhat tumid beneath ; 
wings hyaline; length 2.5 mms. 
Described from one female (type) collected on Cooke’s Trail, Nuuanu 
Valley, Oahu, by D. T. Fullaway, August 20, 1916. 
Type: Cat. No. 73, Bishop Museum. 
74. Sterola koolauensis n.sp. 
Q@ shining black, antennz brown, fuscous outwardly, legs fuscous, tibize 
and tarsi yellowish brown. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture; closely, shallowly, fairly coarsely punctate, and hairy. Head longer 
than wide by one-half, width between the eyes a little more than the length 
from eye to vertex; flatly convex above, depressed in front, convex beneath, 
the greatest depth directly behind the eyes; vertical margin straight, tem- 
ples rounded, eyes flat; antenne no longer than the head, pedicel a little 
longer than wide, following segments as wide as long, antennal fosse deep; 
clypeus carinate, apically depressed and projecting slightly in front of the 
anterior margin of the head, sloping at the sides; mandibles stout, curved, 
concavo-convex, truncate apically and toothed, base touching the eye above; 
gula flatly convex, medially foreshortened, as wide as long, anterior margin 
nearly straight, posterior margin incised; abdomen short ovate, smooth and 
polished; wings subinfuscate, with a faint yellowish brown pigmentation ; 
length 2.25 mms. 
Described from two females (type and paratype). Type from S. E. 
Koolau mountains, Oahu, collected by J. C. Bridwell, 1916. Second speci- 
men, from Kuliouou, collected by P. H. Timberlake, June 25, 1916, and 
marked “no. 20”, paratype. 
Type: Cat. No. 74, Bishop Museum. 
75. Sierola koebelei n.sp. 
@ shining black, almost brilliant, antenne brown, fuscous outwardly, 
legs fuscous, tibiz and tarsi brown. 
