HYMENOPTERA 87 



Female, very like the cf in general sculpture, &c., clothed with similar dark 

 pubescence ; clypeus with its apical margin smooth and shining, and angulately 

 emarginate ; scutellum shining between the punctures which are distinct and even ; 

 propodeum often with a few very sliort wrinkles from its front margin, beyond these 

 the surface smooth (except for the fine rugulosity of the surface), and slightly 

 shining ; wings quite dark, with very distinct blue iridescence ; fifth and sixth ventral 

 segments of the abdomen with long black hairs. 



Hab. Haleakala, Maui (5000 ft.). In 1894 a small colony of this species was 

 found burrowing in the hard dry trunk of a dead, but still standing, Ohia tree 

 {Metrosideros). From this a short series of females was obtained, as they returned 

 to their burrows. In October 1896 an enormous colony was found high up in a 

 dead and decayed tree of Strmissia, and most of the specimens examined (about 50 

 in number) were obtained as they flew wildly over the ferns in the immediate vicinity 

 of the colony. 



(15) Nesoprosopis haleakalae, sp. nov. 



Nigra, capite trans oculos lato ; mesonoto et scutello aequaliter punctatis ; area 

 propodei antica fortiter clathrate rugosa ; alis fuscis ; </ maculis tribus prae antennis 

 flavis ; antennarum articulo 1° dilatato, multo longiore quam latiore, margine antico 

 subtus vix arcuato ; segmenti ventralis 8' productione fortius dilatata ; metatarsis 

 posticis saepe plus minusve pallidis. </ ? . Long. 6 — 7 mm. 



Male, with a spot on the clypeus, and one on each side of the face without it, 

 yellow ; front of the front tibiae, and sometimes all the tarsi testaceous ; base of the 

 posterior metatarsi generally more or less pale, sometimes only obscurely so ; the 

 facial markings are more distinct in some examples than others, but I have seen 

 none in which they are wanting. 



Face wide across the eyes, and strongly convex from the ocelli to the apex 

 of the clypeus ; the latter distinctly but shallowly punctured, clothed with long hairs, 

 the plate above it wide and punctured ; the scape of the antennae dilated, but much 

 longer than wide, its anterior margin when viewed from in front almost straight 

 beneath, not concave or arched ; if, however, the under surface be examined, it will 

 be seen to be deeply concave as in other species, only the concavity in this species 

 does not extend quite so far as the anterior margin ; head above the antennae with 

 long dark hairs, exceedingly densely punctured towards the middle, where the close 

 sculpture forms a distinct deep black area ; thorax and scutellum dull, with erect 

 dark pubescence, and closely and evenly punctured ; the whole of the anterior area 

 of the propodeum is somewhat coarsely clathrately rugose ; abdomen with the apical 

 process of the 8th ventral segment dorso-ventrally expanded, its bifurcate apex also 

 dilated, and beautifully fringed with long hairs. 



