86 New Species of Sierola, With Explanatory Notes. 
tumid beneath, the greatest depth, beneath the posterior end of the eye, at 
least two-thirds the length; vertical margin straight, temples rounded, eyes 
convex: antenne reaching the nesoscutum, all the segurents of the flagellum 
longer than wide, the pedicel more than twice as long as wide, antennal 
fosse deep; clypeus short, medially longitudinally elevate and sloping at the 
sides, depressed apically and slightly projected in front of the anterior mar- 
gin of the head; mandibles slender, curved, concavo-convex, toothed api- 
cally, base nearly reaching the eye above; gula and sides of the head flat, the 
former medially foreshortened, considerably wider than long and somewhat 
protuberant behind where it is divided into two lobes by a wide and shallow 
sulcus; propodeum rugulose, flat on top, declivous behind and at the sides, 
the margins distinct; abdomen elongate ovate, smooth and polished; wings 
subinfuscate, with a faint yellowish brown pigmentation; length 2.5 mms. 
Described from one female (type) collected on Kaala mountain, Oahu, 
2500-3000 feet elevation, by P. H. Timberlake, July 22, 1917. 
Type: Cat. No. 28, Bishop Museum. 
29. Sierola peleana n.sp. 
@ shining black, almost brilliant, legs and antennal scape flavous, the 
flagellum fuscous; mandibles reddish brown. 
Head and thorax with a microscopically fine reticulate surface sculp- 
ture; finely, shallowly, and remotely punctate; sparingly clothed with short 
stiff white hairs. Head a little longer than wide, width between the eyes 
more than the length from the eye to the vertex; flatly convex above, 
depressed in front, tumid beneath, greatest depth beneath the posterior end 
of the eye; vertical margin straight, temples rounded, eyes convex, antennz 
reaching the mesoscutum, all the segments considerably longer than wide, 
the pedicel and first funicle segment twice as long as wide, antennal fossz 
deep; clypeus short, medially elevate and sloping at the sides, depressed 
apically and slightly projected in front of the anterior margin of the head; 
mandibles stout, bent in the middle, the distal portion twisted and flattened, 
truncate apically and toothed, base touching the eye above; gula and sides of 
the head flatly convex, the former medially foreshortened, as wide as long, 
anterior margin arcuately concave, posterior margin incised; propodeum 
rugulose; abdomen ovate, smooth and polished; wings subinfuscate; length 
3 mms. 
Described from three females (type and paratypes). Type collected on 
Kaala mountain, Oahu, 2000 ft. elev., on Pelea clusiaefolia, by P. H. Timber- 
lake, March 4, 1917. ‘Two specimens collected on Niu Ridge, Oahu, by P. H. 
Timberlake, February 10, 1918, paratypes. 
Type: Cat. No. 29, Bishop Museum. 
30. Sierola kaala n.sp. 
2 moderately flat and elongate; dull black on the head, thorax a little 
more shining, abdomen brilliant; antennz and legs brown to fuscous, anten- 
nz fuscous outwardly, legs basally from the apex of the femora. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, a little coarser on the head than on the thorax; 
fs2"] 
