Nc-a' Species of Sierola. With Explouatory Xofes. 8i 



closely punctate and hairy. Head wider than the thorax, as wide as long, 

 width between the eyes considerably more than the length from the eye to 

 the vertex ; convex above, depressed in front, tumid beneath, the greatest 

 depth beneath the posterior end of the eyes; vertical margin straight, temples 

 rounded, eyes convex ; antennae reaching the mesoscutum, all the segments 

 of the flagellum longer than wide, the pedicel and funicle twice as long as 

 wide, antennal fossae deep ; clypeus spatulate, rather short, hardly exceeding 

 the anterior margin of the head, convex above, apically depressed, contracted 

 at the base by the inward extension of the antennal fossae; mandibles fairly 

 stout, bent at tlie middle, distal portion flattened, truncate apically and toothed, 

 the base not reaching the eye ; cheeks fairly wide ; gula and sides of the head 

 flat, the former medially foreshortened, wider than long, anterior margin 

 arcuately concave, posterior margin incised ; propodeum short, finely acicu- 

 late ; abdomen elongate ovate, smooth and polished; wings subinfuscate. 

 with a shallow yellowish brown pigmentation ; length 3 mms. 



Described from two females (type and paratype). Type collected at 

 Kilauea, Hawaii, 4000 ft. elev., by Giff^ard and Muir, January 19, 1917. Para- 

 type collected in the same locality by W. M. Giffard, June 8, 1908. 



Type : Cat. Xo. 19, Bishop Museum. 



20. Sierola rocki n.sp. 



9 sliining black, the legs, mandibles and basal segments of antennae 

 yellowish brown, antenna; outwardly fuscous. 



Head and thorax to the propodeum with a microscopically fine reticu- 

 late surface sculpture, finely, shallowly and remotely punctate, hairy clothing 

 mconspicuous. Head a little wider than long, widest across the eyes, nar- 

 rowing slightly behind and in front, width between the eyes twice the 

 length from eye to vertex ; convex above, depressed in front, tumid be- 

 neath ; vertical margin straiglit. temples rounded, eyes convex ; antennae 

 reaching the mesoscutum, all the segments of the flagellum longer than 

 wide, pedicel and funicle twice as long as wide, antennal fossae deep ; 

 clypeus spatulate, rather small, horizontally extended, and exceeding the 

 anterior margin of the head by Iialf its length, convex above, contracted 

 at base b}' the inward extension of the antennal fossae ; mandibles fairly 

 stout, curved, concavo-convex, truncate apically and toothed, base touching 

 eye above ; gula and sides of the head flat, the former medially fore- 

 shortened, wider than long, anterior margin arcuately concave, posterior 

 margin incised ; propodeum rugulose ; abdomen elongate ovate, smooth 

 and polished ; wings wnth a shallow yellowish brown pigmentation ; length 

 2.25 mms. 



Described from one female (type) collected near Kilauea, at 29 miles, 

 from Hilo. on the Hilo-Kau road, Hawaii by D. T. Fullaway. May 12, 

 1913- 



Type : Cat. Xo. 20, Bishop Museum. 



21. Sierola bicolor n.?,p. 



$ slender, shining black, almost brilliant, antennae basally, prothorax 

 and the legs luteous, mandibles testaceous. 



