HYMENOPTERA PARASITICA 289 



( I ) Sierola leuconeura Cameron. 



1886. Sierola leuconezira Cameron, P. Manchester Soc. xxv. p. 177. — 1886. 



Cameron, Mem. Manchester Soc. (3), x. p. 238. — 1898. Dalla Torre, Cat. 



Hym. V. p. 554. 



?. Length 2 mm. " Black ; the knees, tibiae and basal half of antennae testaceous : 



the hind tibiae fuscous in the middle ; antennae scarcely so long as the thorax, the 



basal joint shortly pedunculated, double as long as wide, double the length and 



thickness of the second, which is thinner and shorter than the third, the third to sixth 



thicker than the following, broader than long, the apical two joints subequal. Head 



and thorax smooth, faintly alutaceous. Abdomen shining, longer than the thorax. 



Wings semifuscous, nervures lacteous." (Cameron.) 



t- Length r8 mm. Black; basal three joints of the antennae, trochanters, tibiae 

 and tarsi, except last joint, yellowish ; funicle joints moniliform, scarcely longer than 

 thick ; otherwise as in female. 



Hab. Hawaii: Kona (3000 feet) July 5, (4000 feet) July, October; Kilauea, in 

 August. — Kauai : Mts. VVaimea, in July. — Lanai : Makaweli (2000 feet), in June, 

 (3000 feet) January. — Maui: H aleak ala (5000 feet), in March. — Molokai : Mts. (4000 

 feet), in October and November. — Oahu : Kaala Mts. (2500 — 3000 feet), in December. 



(2) Sierola monticola Cameron. 



1886. Sierola monticola Cameron, P. Manchester Soc. xxv. p. 176. — 1886. 

 Cameron, Mem. Manchester Soc. (3), x. p. 237. — 1S98. Dalla Torre, Cat. 

 Hym. V. p. 555. 



%. Length 4 mm. "Black; anterior tibiae and tarsi testaceous, the tips of the 

 latter black; the base and apex of hind tibiae fusco-testaceous, the tarsi fuscous, paler 

 in the middle ; the extreme base and apex of basal joint of antennae and the second to 

 fourth joint testaceous. Antennae scarcely so long as the thorax ; the basal joint 

 pear-shaped, narrowest at the base, a little longer than the third and fourth united ; 

 second joint a little longer than third, and of the same thickness; second to fourth 

 longer and thicker than the other j oints ; the apical seven more moniliform than the 

 others, and a little longer than broad ; the last longer and thinner than the penultimate. 

 Head smooth and slightly alutaceous ; mandibles piceous at tip, faintly striated ; thorax 

 smooth, a little alutaceous. The abdominal segments laterally at their junction 

 narrowly milk-white. Wings hyaline, stigma aud prostigma fuscous ; nervures 

 testaceous." (Cameron.) 



Z. Length 2 mm. Black, basal two joints of antennae beneath, front coxae and 

 femora beneath and toward apex, and tibiae and tarsi except last joint, testaceous ; 



