Hymenoptera in the British Museum. 79 



aurantiacis, anticis macula magna mediana fusco-purpurea, apice 

 leviter infuscatis, venis ferrugineis. 



(J. Feminae similis; mesonoto fusco-ferrugineo. 



Long. Q, 18-21 mm. ; ^, 18 mm. 



$. Clypeus broad and transverse at the apex; labrum scarcely 

 exposed, very broadly rounded at the apex and with a fringe of 

 long fulvous hairs. Antennal prominence somewhat porrect, very 

 feebly bilobed and divided by a strong longitudinal sulcus. Second 

 joint of the flagellum a little longer than the first and third com- 

 bined. Posterior ocelli further from the eyes than from each 

 other. Pronotum short, rounded at the anterior angles, the posterior 

 margin very broadly arched. Head and pronotum sparsely, meso- 

 notum and scutellum closely, covered with short dark golden 

 pubescence, the mesonotum and scutellum very finely and closely 

 punctured; scutellum with a flat dorsal surface, broadly rounded 

 at the apex; postscutellum subcarinate longituduially in the 

 middle, slightly produced in the middle posteriorly and rounded 

 at the apex. Median segment with a blunt tubercle on each side 

 at the base, with a deep median sulcus from base to apex, opaque, 

 with very minute and indistinct transverse striae; the posterior 

 slope oblique, not abruptly separated from the dorsal surface, 

 sparsely clothed with fuscous hairs. Abdomen highly polished, 

 with a few small scattered punctures; sixth dorsal segment more 

 coarsely punctured, narrowly rounded at the apex, densely clothed 

 with golden pubescence intermingled with coarse fulvous setae. 

 Hind tibiae rather feebly serrate; tarsal migues bifid; spines of 

 the fore tarsi rather short. First recurrent nervure received at 

 about three-quarters from the base of the second cubital cell, second 

 just before the middle of the third cubital cell; third abscissa of 

 the radius nearly half as long again as the second; cubitus of the 

 hindwing interstitial with the transverse median nervure; sub- 

 median cell of the forewing longer than the basal. 



cj. Antennae very long, measuring 15 mm., the whole length of 

 the insect being 18 mm. ; groove near the base of the second 

 ventral segment very distinct, quite as deep as in the female; 

 seventh dorsal segment very broadly rounded at the apex; sixth 

 ventral segment widely emarginate at the apex, with a short acute 

 spine on each side at the apical angles; seventh ventral segment 

 flat, subquadrate, broadly truncate at the apex. 



Hah. Fiji (British Museum ex Crawley Coll.) ; Fiji 

 {R. C. L. Perkins), Fiji, Natova, Nadi {R. Veitch), October. 



Not very nearly related to any other species known to 

 me, though nearer to the group of C. flavus, Fabr., than 



