New Species of Sierola, With Explanatory Notes. 73 
late surface sculpture, only fairly closely and finely punctate and clothed with 
short and delicate hairs. Head considerably longer than wide, widest at the 
vertex, narrowing in front, flatly convex above, a little tumid beneath, great- 
est depth beneath the posterior end of the eye; vertical margin straight, tem- 
ples rounded, eyes flatly convex, antennz a little longer than the head, pedicel 
twice as long as wide, funicle narrower and not quite so long, following seg- 
ments a little longer than wide, almost moniliform, antennal fosse deep; 
clypeal process a spatulate beak horizontally extended, flat above and finely 
carinate; mandibles slender, bent near the middle, the distal portion flattened, 
obliquely truncate apically and toothed, base not reaching the eye, cheeks 
moderately long; gula and sides of the head slightly convex, the former as 
wide as long, anterior and posterior margins incised, median groove evident 
but very fine; propodeum rugose; abdomen elongate ovate, smooth and pol- 
ished; wings subinfuscate; length 3 mms. 
@ with the mandibles, legs and antenne basally luteous, considerably 
smaller than the @, head shorter and widest across the eyes, antenne more 
slender, clypeal process smaller, cheeks shorter, abdomen blunt at the apex. 
Described from seven females and four males (type, allotype, and para- 
types). Type collected on Kaala Mt., Oahu, by O. H. Swezey, September 7, 
1913; one 2 and two ¢,allotype and paratypes, at Nuuanu Pali, Oahu, by 
Fullaway, April 1, 1917. Paratypes: 4 9 and 1 g Kaumuohona, Oahu, Tim- 
berlake September 9, 1917; I 2 and 1 ¢ Tantalus, Oahu, Giffard, August 27 
and December 22, 1918. 
Type: Cat. No. 2, Bishop Museum. 
3. Stierola nigrescens n.sp. 
@ moderately slender, head and thorax dull black, abdomen brilliant, 
legs, antenne and mandibles fuscous. 
Head and thorax with a very fine, reticulate surface sculpture, finely 
and only fairly closely punctate, hairy clothing short but rather thick beneath. 
Head a little longer than wide, widest at the posterior end of the eyes, nar- 
rowing slightly behind and in front, width between the eyes a little more 
than the length from the eye to the vertex, flatly convex above, a little tumid 
beneath, the greatest depth behind the eyes; vertical margin straight, tem- 
ples rounded, eyes flatly convex, antenne reaching the mesoscutum, segments 
of the flagellum all longer than wide, pedicel twice as long as wide, antennal 
fosse deep, clypeal process a spatulate beak horizontally extended, flat above 
and finely carinate; mandibles bent near the middle, the distal portion flat- 
tened, truncate and blunt toothed on apical margin, the base not reaching the 
eye; cheeks narrow; gula and sides of the head flat, the former as wide as 
long, anterior margin semicircularly concave, posterior margin incised; abdo- 
men smooth, elongate and a little depressed; wings subinfuscate; length 
2.75 mms. 
Described from one female (type) collected at Kilauea, Hawaii, in the 
dry forest, 4000 ft. elev., by W. M. Giffard, July 6, ro18. 
Type: Cat. No. 3, Bishop Museum. 
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