HYMENOPTERA 617 



lum distinctly shining and smoother posteriorly; posterior lower angles of the propodeum 

 spinose. Wings hyaline and lightly infuscate, radius given off from the marginal vein 

 before the apical third of the length of the wing. Second abdominal segment longi- 

 tudinally costate on about its basal third, for the rest polished and impunctate. Length, 



% I — 1-5 mm. 



Hab. Oahu ; Honolulu. 



(2) Ceraphron abnormis, sp. nov. 



Ferruginous, the apex of the scape of the antennae black, as well as all the other 

 joints, excepting that the pedicel may be somewhat pale. Abdomen with a dark 

 transverse basal band, and the apical segments also black or dark, this colour beginning 

 usually about the middle of the large second segment. 



Head dull densely sculptured, shagreened, scape of antennae attenuate towards 

 the apex, pedicel in the Z very small, the first flagellar joint about three times as long 

 as wide, a little longer than the following, which are subequal ; pedicel in the % elongate, 

 rather more than half as long as the very elongate first funicle joint, which is double 

 the length of the second funicle joint ; subapical joints of the funicle rather longer than 

 wide. Thorax densely punctate, or shagreened, the scutellum smooth and polished 

 posteriorly, the metanotum prominently angulate in the middle. Abdomen with long 

 regular longitudinal costae at the base, for the rest smooth and shining, glabrous, the 

 head and thorax bearing a very short pubescence. Length about 2 mm. 



It is doubtful whether this insect is a true Ceraphron, as it has the parapsidal 

 furrows distinct, at least in front. According to Ashmead's definition of the group it 

 differs from all Ceraphroninae in that the maxillary palpi are three-jointed, and there 

 are two distinct spurs on the hind tibiae. The generic characters are as follows : 



Head transverse ; ocelli in a small subequilateral triangle, the lateral ones very 

 remote from the eye-margins, the eyes pubescent, not nearly reaching the mandibles. 

 Mandibles bidentate, maxillary palpi with three elongate and subequal joints, the first 

 broadest basally, the second near the middle and the third subtriangularly dilated. 

 Labial palpi very short, with an elongate pilose joint and probably a short basal one 

 before this. Antennae oi $ long, filiform, 11 -jointed, subattenuate apically; in the % 

 lo-jointed and with subclavate flagellum. Mesonotum with the parapsidal furrows 

 marked by punctate lines, which usually fail before reaching the hind margins ; medio- 

 dorsal grooved line complete and distinct. Axillae triangular, large, meeting inwardly, 

 marked off from the scutellum, which is acutangular in front, by crenate lines. Posterior 

 tibiae with two distinct calcaria. Marginal vein linear, less than one-third of the length 

 of the long curved radius, separated by a pale spot from the submarginal. Abdomen 

 with the second segment forming most of its surface, and costate at the base. 



