FOSSORIAL WASPS. 611 



posterior slope punctured at the base, transversely striated at 

 the apex, the median sulcus deep at the base, but not extending 

 on to the striated portion. Abdomen microscopically punctured, 

 the segments not constricted ; second ventral segment finely and 

 evenly punctured. Recurrent nervures interstitial with the 

 transverse cubital nervures ; second abscissa of the radius slightly 

 shorter than the petiole of the second cubital cell ; transverse 

 median and basal nei-vures interstitial. 



c? . Olypeus produced into a short spine at the apex ; posterior 

 ocelli separated from the eyes by a distance fully eqiial to their 

 own diameter ; second abscissa of the radius a little longer than 

 the petiole of the second cubital cell. 



Hah. Mackay, Q. {Turner), January and T'ebruary. 



Yery near tibialis, but the eyes are nearer together on the 

 vertex, the sculpture of the thorax and median segment is finer, 

 the second abscissa of the radius is much shorter, and the whole 

 insect is of more slender build, the median segment being longer 

 and more narrowed to the apex. 



40. PiSON MEEIDIOTSrALE, sp. n. 



S . Niger ; antennis articulis quatuor basalibus, mandibulis, 

 tegulis pedibusque, coxis exceptis, ferrugineis; segmentis dor- 

 safibus apice late brunneis, fascia apicali aureo-pubescente ; alis 

 hyalinis, iridescentibus, venis fuscis. 



Long. 9*5 mm. 



S . Clypeus minutely punctured, produced into a short spine 

 at the apex, covered with whitish pubescence, which extends on 

 the front as high as the emargination of the eyes. Second joint 

 of the flagellum very little longer than the third. Posterior 

 ocelli as far from the eyes as from each other, separated from the 

 eyes by a distance about half as great again as their own 

 diameter ; eyes half as far again from each other on the clypeus 

 as on the vertex. Head and thorax minutely punctured. 

 Median segment finely punctured-striate, the striae oblique and 

 indistinct, "most distinct at the base; the median sulcus distinct, 

 but shallow, the carina only developed at the extreme base ; the 

 posterior slope coarsely transversely striated. Abdomen very 

 finely and closely punctured ; the basal segment short, a little 

 depressed at the apex ; second ventral segment closely and 

 evenly punctured ; seventh dorsal segment broadly truncate at 

 the apex. Recurrent nervures interstitial with the transverse 

 cubital nervures ; second abscissa of the radius longer than the 

 petiole of the second cubital cell ; transverse median nervure 

 received just beyond the basal nervure, not quite interstitial. 



Hah. Adelaide, S.A. 



Near tibialis, but differs in the colour of the legs and antenna^, 

 in the lesser breadth between the eyes on the vertex, in the 

 finer sculpture of the thorax, and in the sculpture of the median 

 seijment. 



