78 FAUNA HAWAIIENSIS 



inwardly, intermediate and posterior legs black or nearly so. The sides of the face 

 are widely and deeply depressed along the inner margins of the eyes ; the antennae 

 black with the scape dilated, about twice as long as wide, and strongly arched beneath ; 

 head above the antennae with the surface rough, shallowly punctured, clothed with 

 rather long pubescence ; mesothorax dull, with fine and shallow puncturation, that 

 of the scutellum rather more distinct ; wings more or less infuscate ; propodeum 

 longitudinally rugose to the brow, the rugosities more regular in some individuals 

 than others ; abdomen with the surface rugulose, with hardly definite or visible 

 puncturation ; beneath, with the sixth segment emarginate at the apex and carinated 

 behind the emargination ; process of the eighth sublinear, rising erect from the body 

 of the segment and curved, bifurcate at its apex, very densely clothed with hairs on its 

 apical half, the bifurcations with a long and regular fringe ; genitalia with the stipites 

 much produced at their apex, with long hairs on their outer margins, which do not 

 extend to the extreme apex, being almost absent on the submembranous apical 

 portion. 



Female black, without any yellow markings on the face ; head above the antennae 

 pubescent as in the cT, the antennae simple, and the face much wider between the eyes : 

 mesothorax with very similar puncturation, but generally more clearly defined, as also 

 is the anterior area of the propodeum, and more regularly longitudinally rugose ; 

 abdomen without definite puncturation, the terminal segments with dark pubescence 

 above and beneath. Length, 6 — 9 mm. 



Hab. Common generally on Oahu, Maui, Lanai, and Molokai, in dry or 

 moderately dry localities, from the coast to an elevation of 4000 ft. in the 

 mountains. 



Obs. This is not a very variable species so far as the facial markings of the 

 d" are concerned. The elongate spots adjoining the clypeus and that on the plate 

 behind it are sometimes diminished in size or rarely absent. The latter part, although 

 its sides are always longer than the apical margin, is variable, the length of the sides 

 being considerably greater (in proportion to the length of the anterior margin), in some 

 examples than in others. Those from Maui, Lanai and Molokai have this plate 

 extremely long and narrow, but not more so than in some Oahuan specimens. The 

 latter often have the wings clearer, and with a less distinct blue iridescence than those 

 from the other islands, they are also on the average of smaller size, and the 

 pubescence of the mesothorax is often paler in colour. 



(2) Nesoprosopis clilorosticta, sp. nov. 



Praecedenti colore ac puncturatione simillima, sed </ tibiis tarsisque posticis basi 

 flavo-maculatis, capite latiore distinguendus. ^%. Long. 6— 7-5 mm. 



