526 MR. R. E. TURNER ON [^^'^J 12, 



abdomen, the base of the second joint, the tibite, tarsi, trochan- 

 ters, and femora (except at the base) ferruginous. Wings hyahne, 

 brilliantly iridescent ; nervures fusco -ferruginous. 



Length 5 mm. 



Hab. Victoria {French). 



Grabro (Rhopalum) frenchii, sp. n. 



2 . Mandibles bidentate at the apex, the teeth short and feeble, 

 Clypeus short, slightly convex, without a carina, and clothed with 

 shoi-t silvery pubescence. Eyes separated from each other at the 

 base of the antennae by a distance equal to about three-quarters 

 of the length of the scape ; the first joint of the flagellum longer 

 than the second. Posterior ocelli as far from the eyes as from 

 each other and a little nearer to the posterior margin of the head. 

 Head and thorax shining, microscopically punctured \ the pro- 

 notum short and transverse, about two-thirds of the width of the 

 head, the angles not prominent. Median segment shining, with 

 a median sulcus from the base to the apex. Abdomen petiolate, 

 as long as the head, thorax, and median segment combined, shining; 

 the three basal segments smooth, the fourth and fifth very closely 

 and minutely punctiu-ed ; the first segment narrow, very slightly 

 swollen at the apex, more than twice as long as broad, about one- 

 third shorter than the second segment ; the second gradually 

 widened to the apex ; the third and fourth segments the broadest. 

 Pygidium elongate, triangular. The posterior tibiae are swollen 

 towards the apex. The recurrent nervure is received close to the 

 middle of the cubital cell. 



Black ; the mandibles (except at the apex), the scape of the 

 antennse, the posterior angles of the pronotum, the trochanters, 

 and the anterior and intermediate tibiae and tarsi pale yellow ; 

 the tegulee, pygidium, and the posterior tibite and tarsi fusco- 

 feri'uginous. Wings hyaline, iridescent ; nervures fusco-ferru- 

 ginous. 



Length 5 mm. 



Hah. Victoria {French) ; November. 



Crabro (Rhopalum) conator, sp. n. 



c? . Mandibles bidentate at the apex, the teeth of about eqtial 

 length. Clypeus clothed with silvery pubescence, broadly rounded 

 anteriorly, with a delicate median carina. Eyes separated from 

 each other at the base of the antennae by about half the length of 

 the scape, diverging very broadly towards the vertex. Second 

 joint of the flagellum half as long again as the first and a little 

 longer than the third. Posterior ocelli a little further from each 

 other than from the eyes and more than half as far again from 

 the posterior margin of the head as from each other. Head large, 

 subquadrate, broadly emarginate posteriorly, finely rvigulose 

 behind the ocelli, rugose in fi-ont of the ocelli, with very thin 

 erect pubescence. Pronotum short, broadly and shallowly emar- 

 ginate anteriorly, the anterior angles slightly produced, narrower 

 than the head. Mesonotum shallowly punctured ; mesopleurae 



