94 Nc7C Sf^ccirs of Sierola. With Jixplaiiafury Notes. 



of tlu- antenna'; mandibles stout, curved, concavo-convex, truncate and 

 tootlied apically, base reaching the eye above ; guhi convex, medially fore- 

 shortened, twice as wide as long, slightly depressed behind on either side of 

 the median groove, anterior margin nearly straiglu, posterior margin incised ; 

 abdomen elliptic-ovate, apically acuminate, smootli and polished: wings hya- 

 line ; length 3.5 mms. 



Described from one female (type) collected al I'alnlo, Oahu, l)y O. H. 

 Swezey, January 3, 1915. 



Type: Cat. No. 43, Risliop Museum. 



44. SIcrola Ic'i'ii^atd n.sp. 



9 unu.suall}' large : shining lilack, tlie head and tlTora.K ver\' dull, tro- 

 chanters, tibiae, tarsi and apex of the mandibles brown, antennae fuscous. 



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

 late surface sculpture, coarsely, shallowly and closely punctate and hairy. 

 Head as wide as long, widest across the eyes, narrowing behind and in 

 front, width between the eyes twice the length from eye to vertex, length in 

 front of the eyes not great ; convex above and beneath, vertical margin 

 straight, temples rounded, eyes convex ; antennae reaching the mesoscutum, 

 all the segments considerably longer than wide, antennal fossae deep ; clypeus 

 carinate, apically depressed and projecting slightly in front of the anterior 

 margin of the head, sloping at the sides, the carina extending backward on 

 the top of the head beyond the base of the antennae ; mandibles short, stout, 

 curved, concavo-convex, truncate and toothed apically, base nearly reaching 

 the eye above ; cheeks extremely narrow ; gula and sides of the head con- 

 vex, the former medially foreshortened, twice as wide as long, slightly 

 depressed behind on either side of the median line, anterior margin arcuately 

 concave, posterior margin incised : propodeum finely rugulose ; abdomen 

 elongate ovate, smooth and polished : wings subinfuscate ; length 3.75 mms. 



Described from one female (type) collected at Kilauea, Hawaii, 4000 

 ft. elevation, by W. M. Gififard, Octolaer, 1915. 



Type : Cat. No. 44, Bishop Museum. 



45. Sierola tenuis nsp. 



9 slender; shining black, the legs and antennas basally yellowish brown, 

 the latter fuscous outwardly', mandibles brown except at the base. 



Head and thorax with a microscopically fine reticulate surface sculp- 

 ture, fairly coarse except on the propodeum ; closely, shallowly and some- 

 what coarsely punctate, rather thickly clothed with long silvery-gray hairs. 

 Head twice as long as wide, width between the eyes a little less than the 

 length f roiTi eye to vertex ; convex above, depressed in front, a little tumid 

 beneath : vertical margin straight, teinples rounded, eyes flatly convex ; an- 

 tennae a little longer than the head, pedicel longer than wide, following seg- 

 ments as wide as long, antennal fossae deep; clypeus carinate, apically de- 

 pressed and projecting slightly in front of the anterior margin of the head, 

 declivous at the sides ; mandibles fairly stout, curved, truncate and toothed 

 apically, base touching the eye above ; gula and sides of the head flat, the 

 former convex beliind. mediallv foreshortened but considerably longer than 



f 40 1 



