28 FAUNA HAWAIIENSIS 



examples distinctly longitudinally strigose amongst the punctures. Mesothorax dull, 

 with dense surface rugulosity and shallow puncturation. Propodeum more or less 

 rugose, more strongly in some examples than others. Second segment of the abdomen 

 very finely punctured above ; beneath very finely and densely punctured towards the 

 apex, less so towards the base, the punctures distinct ; the apical ventral segments 

 lightly depressed, and fringed with golden-red hairs. 



Female, except for the differences given above, very like the c/. The mesothorax 

 posteriorly is slightly smoother, and less dull, the longitudinal rugosity of the pro- 

 podeum extremely short. The second ventral segment of the abdomen, about the 

 middle, has at the most a few somewhat large and very shallow punctures, its surface 

 is excessively finely rugulose, and not very shining ; the apical dorsal segment is very 

 narrow, and coarsely punctured. There is a rather conspicuous pale pubescence on 

 the segments preceding the two apical ones. 



Hab. Various localities on Hawaii (from 2000 — 4000 ft.). Not very abundant. 



(4) Nesocrabro daciiionius, sp. nov. 



Niger, alis infuscatis, haud evidenter caeruleo-iridescentibus, mesonoto minus 

 opaco, plus minusve flavo-maculato, abdominis segmentis apicalibus pubescentia rufa 

 ornatis, segmento ? 2 ventrali nitido, laevissimo, in medio fere impunctato ; fronte 

 pilis nigricantibus, tibiis anticis pubescentia brevi et obscura vestitis. c/ ? . Long. 

 8 — 12 mm. 



Black, the wings infuscate (less so in the $ ), but with little or no blue 

 iridescence. The prothorax and postscutellum usually both bear yellow spots in 

 the c/, but they are variable in this respect ; in the ? these spots are much larger, 

 and the scutellum also has a large transverse one, as well as the first and second 

 ventral segments of the abdomen. The latter may also be present in the (/, as also 

 spots on the scutellum. The apical segments are clothed with golden-red hairs as 

 in N. riLbrocatidatus, and the preceding segments in the ? with dense and fine 

 whitish pubescence. From that species the much less dull surface of the whole 

 insect will readily separate the present one, as well as the much more distinct 

 puncturation of the front of the head and the mesothorax ; the surface of the latter 

 in the ? being altogether smooth and shining between the punctures. In the d" 

 the second ventral segment of the abdomen is densely and distinctly punctured all 

 over, in the ? its surface about the middle is nearly or quite impunctate, smooth, 

 and shining. 



The fifth dorsal segment of the $ is aeneous and very densely punctured. Front 

 of the head, and the front tibiae with dark pubescence, very short on the latter. 



Hab. Mountains of Molokai (3000 — 4000 ft.). lao Valley, Maui. 



