New Species of Sierola, lllth Explanatory Notes. 153 



ciir\-c(l. concavo-comcx, trvincatc apicall}' aiul lootlied, l)asL' iiol (|uitc' reach- 

 ing the eye; gula and sides of the head flatly convex, the former medially 

 foreshortened, wider than long and finely punctate, anterior margin arcnately 

 concave, posterior margin incised; alidomen ovate, smooth and polished; 

 wings snhinfnscate. with a \ery faint _\'ellowisli l)rown pigmentation ; length 

 2.5 mms. 



Descrihed from one female (type) collected on Tantalus Alonntain, 

 Oahu, 1300 ft. elevation, 1)y W. M. Giffard. 



Type : Cat. No. 160, Bishop Museum. 



161. Sierola laii^fordi n.^:). 



9 dull sliining Ijlack, legs and antennae yellowisii hrown to fuscous. 

 Head and thorax with a microscopically fine and delicate reticulate 

 surface sculpture ; finely and somewhat remotely punctate, and hairy. Head 

 considerahly longer than wide, widest across the eyes, narrowing behind and 

 in front, width between the eyes greater than the length from eye to vertex ; 

 flatly convex above, depressed in front, tumid beneath, the greatest depth 

 beneath the posterior end of the eye; vertical margin straight, temples 

 rounded, eyes convex ; .antenna; reaching the mesoscutum, all the segments 

 longer than wide, pedicel nearly twice as long as wide, antennal fossae deep ; 

 clypeus carinatc, apically depressed, the point blunt, hardly projecting in 

 front of the anterior margin of the head, which is angulate, not transverse, 

 sloping at the sides ; mandil)les stout, bent at the middle, outer half flat- 

 tened, truncate apically and toothed, base not quite reaching the eye ; gula 

 and sides of the head flat, the former medially foreshortened, wider than 

 long, narrowing behind, with a depression along the median line, anterior and 

 posterior margins arcuately concave ; abdomen ovate, apically acuminate, 

 smooth and polislied ; wings subinfuscate, with a very faint fuscous pig- 

 mentation ; length 3 mms. 



Described from one female (type) collected on Tantalus Mountain, 

 Oahu, elevation 130D ft., by W. M. Giffard, November 1-2, 1905. 



Type: Cat. No. 161. Bishop Museum. 



162. Sierola aspera n..sp. 



$ dull shining 1)lack, legs and antennje yellowish brown except the 

 hind femora, the coxae and the apical segments of the flagellum, which arc 

 fuscous. 



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

 late surface sculpture, coarser on the head and prothorax than on tlic 

 mesothorax and scutellum ; coarsely, shallowly and closely punctate ; luiiry 

 clothing fairly long and thick. Head longer than wide by a half, width 

 between the eyes hardly exceeding the length from eye to vertex ; flatly 

 convex above, depressed in front, a little tumid beneath ; vertical margin 

 straight, temples rounded, eyes flatly convex ; antennje a little longer than 

 the head, pedicel and first funicle segment twice as long as wide, the fol- 

 lowing segments hardly longer than wide, antennal foss?e deep ; clypeus 

 carinate, apically depressed, almost perpendicular, not projecting in front 

 of tlie anterior margin of the head, declivous at the sides, tlie carina extend- 



[99] 



