608 



NEW FOSSORIAL HYMENOPTERA FROM AUS- 

 TRALIA AND TASMANIA. 



By Rowland E. Turner, F.Z.S., F.E.S. 



Family THTNNIDJB. 

 Subfamily RHAGIGASTKRINiE. 



Rhagigaster jubilans, sp.n. 



<J. Niger; scapo, pronoto, tegulis, abdoinine pedibusque rufo- 

 testaceis; alis pallide flavo-hyalinis, venis basi testaceis, apice 

 fuscis. Long. 1 1 mm. 



(J. Clypeus with a carina from the base to the apex. Head 

 rugosely punctured on the front, more finely on the vertex, the 

 interantennal prominence broadly rounded at the apex, a strong 

 transverse carina below the anterior ocellus extending to the eves. 

 Pronotum very shallowly emarginate anteriorly, the anterior angles 

 slightly prominent. Thorax shining, sparsely punctured, the meso- 

 pleurae more coarsely and closely punctured. Median segment 

 more finely punctured than the thorax, shorter than the scutellum, 

 twice as broad as long, very steeply sloped posteriorly. Abdomen 

 slender, very sparsely punctured, the segments constricted at the 

 base; seventh dorsal segment trilobed at the apex, the median lobe 

 the longest and subtuberculate; the hypopygium consisting of a 

 single recurved aculeus. Third abscissa of the radius about half as 

 long again as the second ; first recurrent nervure received at three- 

 fifths from the base of the second cubital cell, second at about one- 

 eighth from the base of the third cubital cell. 



Hah. — Borroloola, Northern Territory. 



Type in Victorian National Museum. 



The colour is very distinct from any other species of the genus; 

 the form of the seventh dorsal segment is also distinct. 



Rhagigaster Icevigahis Sm., occurs in the same locality. 



