^fr. R. E. Turner on Fossorial Ilijmenoptera. 91 



ocelli ; a sliort longitudinal sulcus between the posterior 

 ocelli. Pronotum strongly rounded at the angles, with a 

 short median longitudinal sulcus ; a shallow almost obsolete 

 sulcus reaching troui the anterior margin of the mcsonotum 

 to the middle. A narrow, transverse, crenulated furrow at 

 the base of the posts(;utclluin, and another at the base of 

 the median segment ; a distinct longitudinal sulcus running 

 from the base to the apex of the median segment. I'irst 

 abdominal segment distinctly longer than the second, the 

 apical half moderately swollen, half as wide at the apex as 

 tiie apex of the second segment. Pvgidial area coarsely 

 j)unctured-rugose at tiie base, with a median carina, smootl) 

 and shining at the apex. Hind tibiie swollen and strongly 

 spinose. llecurrent ncrvure received just beyond three- 

 cpiarters from the base of the cubital cell, at a distance from 

 the apex of the cell scarcely equal to the length of the trans- 

 verse cubital ncrvure. 



(^ . The male has the head less produced behind the eyes, 

 the posterior ocelli being only a little farther from the poste- 

 rior margin of the head than from each other ; the depres- 

 sions between the eyes and the posterior ocelli are much 

 smaller and the abdomen much more slender. 



Hub. Yallingiip, S.W.Australia; October and November. 



Taken burrowing in sand, the males flying low over the 

 sand. 



Nearly related to R. variitarse from Tasmania, but differs 

 in the presence of a sulcus on the median segment, in the 

 position of the recurrent ncrvure, and in the sculpture of the 

 pygidial area. 



Rhopalum litiorale, sp. n. 



2 . Nigra ; scapo subtus, tibiis anticis cxtus, tarsisque anticis et 

 iutermediis, articulo apicali excepto albido-llavis ; alis hjaliuis, 

 iridescentibus, veuis uigris. 

 Long. G mm. 



? . Eyes separated at the base of the clypcus by a distance 

 equal to about one-(piarter of the length of the scape. Pos- 

 terior ocelli as far from each other as from the e\es, and 

 about the same distance from the posterior margin of the 

 head ; a short longitudinal sulcus between the posterior 

 ocelli. A narrow groove along the inner margin of the eyes, 

 but no broad depression running towards the posterior 

 ocelli. Pronotum depressed, without a distinct dorsal 

 surface, rounded at the angles ; mesonotum without a sulcus, 

 Median segment \wth a transverse crenulated line at the 



