HYMENOPTERA loi 



is slightly emarginate at its apex ; the head above the antennae quite dull and rugulose, 

 shallowly punctured as in the d". Scutellum dull, rugulose between the punctures, 

 which are close and even. Abdomen dull, the apical segments with dark hairs. 

 Wings in both sexes clear, or clouded across the middle. Length 55 — 7*5 mm. 



Hai!. Coast and lowlands of Molokai, Lanai, and Maui ; abundant. Oahu 

 (Honolulu and Waianae) ; Kealakeakua Bay, Hawaii. 



Obs. Most of the examples (</) from the intermediate islands have the ventral 

 segments transversely ridged more or less strongly, but in some the ridges are 

 obsolete, and then the surface is generally duller and more or less evidently punctured ; 

 Oahuan specimens are generally of the latter form, but sometimes the ridges are quite 

 strongly developed. The cT is quite distinct from any other except the slightly modified 

 form next described, although its general appearance is extremely similar to that of 

 N. facilis and others. The ? is very like that of N. longiceps and blackburni, to which 

 it is really closely allied, but the much less densely punctured head behind the antennae 

 will easily separate it from the former ; the longer face, and the duller and more closely 

 punctured scutellum, from the latter. 



(35) Nesoprosopis flavifrons. 



Prosopis flavifrons, Kirby, Ent. Mo. Mag. xvii. p. 85. Blackburn and 

 Cameron, P. Manch. Soc. xxv. (1885-86), p. 144. 



(Plate II. fig. 18— 18^) 



Male, like the preceding in general form and colour ; scape of the antennae often 

 with the anterior margin more or less pale, and evidendy more strongly dilated than 

 that of N. anthracina, subcordiform in shape, the anterior margin distinctly rounded 

 as well as the posterior : the face is also rather wider, and the eighth ventral segment 

 has the process rather strongly dilated. I see no character whereby the females of the 

 two forms can be separated. Length 5 '5 — 7 -5 mm. 



Hab. Coast of Kauai, not rare; many males were taken in January, 1897, but 

 only two or three females. I have seen cells of this species formed in dead twigs. 



(36) Nesoprosopis assinmlans, sp. nov. 



A^. obscuratae cognata, et colore simillima ; </ antennarum articulo primo magis 

 dilatato, margine posteriore fortius rotundato ; ? mesonoto subtilius punctato bene 

 distincta. Long. 675 — 9-5 mm. 



(Plate n. fig. 19 — 19b.) 



Male, with the greater part (often nearly the whole) of the clypeus, and a large 

 subtriangular mark on either side of it which reaches as high, or a little higher than the 



