io8 FAUNA HAWAIIENSIS 



never to have an entire pale band, its abdomen is decidedly more pubescent and 

 rather more punctured than in the allied species, and the second ventral segment is 

 more strongly raised from the base, having in some specimens a tuberculate form. 



Hab. Mountains of Hawaii from 2000 — 4000 ft. in various localities (Kona, 

 Puna, and Kau). Not rare. 



(45) Nesoprosopis setosifrons, sp. nov. 



Nigra, alis fuscis caeruleo-iridescentibus ; clypeo breviter nigro-setoso ; scutello 

 vix depresso, aequaliter punctato ; ^ pronoto nigro, nonnunquam postice albo-lineato, 

 antennarum articulo primo nigro atque dilatato, evidenter longiore quam latiore ; capite 

 prae antennis utrinque, nonnunquam etiam clypeo, albo-maculato ; tibiis posticis albo- 

 lineatis; ? segmentis abdominis apicalibus pilis nigricantibus vestitis. Long. 7 '5 — 

 10-5 mm. (Plate II. fig. 22 — 22 c.) 



Male, with a large white spot on each side of the face below the antennae, and 

 sometimes one near the apex of the clypeus ; the hind margin of the prothorax rarely 

 with a white band ; posterior and intermediate tibiae with a pale line from the base, 

 of variable length, sometimes reaching to their apex ; basal joint of the tarsi with a 

 spot at their base ; sometimes however the legs are entirely dark, except the front 

 of the anterior tibiae. Scape of the antennae black, without a white line on its front 

 margin, dilated, its hind margin strongly rounded, its front one very slightly so, 

 considerably longer than wide ; clypeus with short erect black hairs (easily seen in 

 lateral view); the face not deeply grooved at the sides along the eyes, above the 

 antennae clothed with black hairs. Mesothorax and scutellum with dark pubescence, 

 and shallowly punctured, the latter not depressed from the sides to the middle line ; 

 anterior area of the propodeum rugose, more strongly so in some examples than in 

 others. Abdomen subelongate, evidently, but very shallowly, punctured ; apical 

 segments with dark pubescence ; eighth ventral segment with the process dilated for 

 about half its length, the dilatation of triangular shape, fringed on the ventral edge 

 with long hairs, as also the terminal bifurcation. 



Female, like the c/' in general sculpture, but more robust. Face rather strongly 

 convex longitudinally ; clypeus with black bristly hairs. Prothorax always with a white 

 margin ; all the tibiae above white, or with a white line, beneath dark, except at 

 the base; basal joint of the posterior tarsi with a white line. Abdomen shining 

 with shallow and by no means close puncturation ; second and third segments at the 

 sides without indications of pale pubescence ; apical segments with black hairs. Wings 

 in both sexes entirely dusky, with steely-blue iridescence. 



Hab. Mountains of Hawaii (4000 ft.). Kona district and at Kilauea. The ^ 

 is easily known from any of the preceding large species by the form of the scape 



