84 A't'Ti' species of Sicrolu. With Jixplaiuitory Xotcs. 



gate ovate, smooth aiul polislicd ; \vinj;s suhintuscatc. witli a very faint yel- 

 lowish brown pigmentation: lengtli ,? nnns. 



I)cscril)ed from one female (typo) collected at Pnnwaawaa, X. Kona, 

 llawaii, 3800 ft. elevation, by W. M. Giffard in Augnst. 1917. 



'Pype : Cat. Xo. 24. P.isliop Mnsenni. 



25. Sirrola an i^^ustiita n.sp. 



9 moderately tiat, slender, and shining black, antenn;e basally, man- 

 liibles except at the base, trochanters. tibicT and tarsi brown. 



Head and thorax witli a microscopically tine reticnlate surface sculp- 

 ture, a little coarser on tlie head and propodeum, almost impunctate, the 

 minute pin punctures extremely tine, shallow and remote, hairy clothing in- 

 conspicuous. Head considerably longer than wide, the length from the eye 

 to the vertex equalling the width between the eyes ; flatly convex above, 

 depressed in front, tumid beneath, the greatest depth behind the eye ; ver- 

 tical margin straight, temples rounded, eyes tiatly convex; antenUcC a little 

 longer than the head, segments of the flagellum a little longer than wide, 

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

 clypeus short, flat on top, projected a little in front of the anterior margin 

 of the head, apically depressed and bluntly pointed ; mandibles slender, 

 curved, toothed apically, base touching the eye above ; gula and sides of the 

 head flat, the former medially foreshortened, longer tlian wide, widening 

 behind where it is divided into two lobes by a fairly deep median sulcus, 

 anterior margin arcuately concave, posterior margin incised ; abdomen elon- 

 gate, smooth and polished ; wings subinfuscate ; length 2.25 mms. 



Described from one female (type) collected at Kilauea, Hawaii. ])y 

 W. M. Giffard in January, 1915. 



Type: Cat. Xo. 25, Bishop Museum. 



26. Sicrolu Iczis n.sp. 



Plate XVI. Fi^'ure .".. 



$ moderately flat, slender, and shining, almost brilliant, !)lack ; legs, 

 antennae basally and mandibles, except at the base, luteo-testaceous. 



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

 late surface sculpture ; impunctate or nearly so, the minute pin punctures 

 and hairs of extreme fineness. Head nearly twice as long as wide, widest 

 at the vertex, narrowing in front, length from the eye to the vertex more 

 than the width between the eyes ; convex above, depressed in front, tumid 

 beneath, greatest depth behind the eyes more than half the length ; vertical 

 margin very slightly concave, temples rounded, eyes rather flat ; antennae 

 reaching the mesoscutum, all the segments of the flagellum considerably lon- 

 ger than wide, pedicel and first funicle segment twice as long as wide, an- 

 tennal fossae deep; clypeus short, projected a little in front of the anterior 

 margin of the head, medially longitudinally elevate but without carina, api- 

 cally depressed and bluntly pointed ; mandibles long, slender, nearly straight, 

 toothed apically, base touching the eye above, projecting slightly below; gula 

 and sides of the head flat, the former medially foreshortened, twice as long 

 as wide, somewhat protuberant behind and divided into two lobes by a deep 

 median sulcus, anterior and posterior margins incised ; propodeum rugulose, 



f30l 



