New Species of Sierola, With Explanatory Notes. 7 
Ct 
6. Sierola magna n.sp. 
@ brilliant black, the legs and antennze brown to fuscous. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture, finely but only fairly closely punctate and hairy. Head wider than the 
thorax, longer than wide, width between the eyes a little more than the length 
from eye to vertex, convex above, a little tumid beneath, the greatest depth 
behind the eye; vertical margin straight, temples rounded, eyes convex; an- 
tennz scarcely longer than the head, segments of the flagellum no longer than 
wide, except the pedicel and first three funicle segments, which are a little 
longer than wide, antennal fosse deep; clypeal process a broad, flat, semi- 
circular lamina, horizontally extended from the anterior margin of the head 
and strongly longitudinally carinate; mandibles stout, curved, concavo-convex, 
obliquely truncate and toothed apically, the base touching the eye above; 
eula convex, as wide as long, median groove nearly effaced; anterior margin 
slightly concave, posterior margin incised; propodeum finely aciculate; abdo- 
men elongate ovate, smooth and polished; wings hyaline; length 3.25 mms. 
Described from one female (type), collected in Niu Valley, Oahu, by 
O. H. Swezey, December 11, IgIo. 
Type: Cat. No. 6, Bishop Museum. 
7. Sierola kauensis n.sp. 
Plate XVI, Figure 2. 
@ shining black, legs and antennz brown to fuscous. 
Head and thorax to the propodeum with a microscopically fine surface 
sculpture, rather coarsely, shallowly and closely punctate and hairy. Head 
wider than the thorax, widest across the eyes, scarcely longer than wide, the 
length behind the eyes not great and the width decreasing slightly; convex 
above, tumid beneath; vertical margin straight, temples rounded, eyes con- 
vex; antenne reaching the mesoscutum, segments of the flagellum a little 
longer than wide, pedicel about twice as long as wide, antennal fossze deep; 
clypeus hardly forming a beak; short, decurved, transverse, the anterior 
margin angulate, apex not greatly exceeding anterior margin of the head, 
medially longitudinally elevate and carinate; mandibles large, curved, concavo- 
convex, truncate and toothed apically, the base touching the eye above; gula 
and sides of the head flat, the former medially foreshortened, wider than 
long, strongly protuberant behind, and divided into two lobes by a rather 
deep median sulcus, posterior margin deeply incised, anterior margin almost 
straight; propodeum rugulose: abdomen moderately long ovate, smooth and 
polished; wings subinfuscate; length 3 mms. 
Described from one female (type) collected at Kahuku, Kau, Hawaii, 
2000 ft. elev., by W. M. Giffard, July 27, 1918. 
Type: Cat. No. 7, Bishop Museum. 
8. Sicrola notabilis n.sp. 
2? shining black, head and thorax a little dull, legs, basal segments of 
antenne and mandibles partly yellowish brown. 
Body rather flat, head and thorax to the propodeum with a microscopi- 
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