new Spliegidaj y'/u//j Auslralui. 271 



Tills curious genus belongs to Kohl's Group X. of the 

 Sphegidae, which inckulos Ampulex and the allied genera, 

 but in the ncuration it ap|)roaches much more nearly to some 

 of the genera in Group XL It .should probably come next 

 to Aplitlotoma. 



Type, A. coruscans, sp. n. 



In size and colour these insects resemble some of the 

 Mutillidte. 



AuchenopJwrus coruscans, sp. n. 



? . Clypeus broad, rounded anteriorly, the apical margin 

 depressed; head shining, very minutely punctured; a short, 

 delicate, longitudinal carina from between the antennae 

 reaching halfway to the anterior ocellus. Pronotum convex, 

 dej)ressed aiiteriorly, narrow, with a slight depression in 

 the middle of the posterior margin, which is strongly 

 depressed. "^riie sides of the prothorax are concave and 

 the posterior angles do not reach the base of the wings. 

 Mesonotum short and broad ; the whole thorax shining, 

 minutely punctured. Median segment longj flat above, 

 abruptly truncate posteriorly, very coarsely rugose ; a 

 median carina starting from the base and continued to the 

 apex on the dorsal surface and also on the surface of the 

 truncation, with a carina on each side converging from the 

 base and meeting above the truncation, forming an isosceles 

 triangle; the surface of the truncation is irregularly trans- 

 versely striated. Abdomen pseudosessile, smooth and 

 shining, the tirst segment long, the apical segment pointed. 



Bright metallic blue ; the mandibles, labrum, and scape of 

 the antennse dark ferruginous. Antennai fuscous. Pro- 

 thorax, mesonotum, tegulae, anterior tibiae above, the three 

 basal abdominal segments and the base of the fourth bright 

 ferruginous red. Tibiae and tarsi fuscous. AV^ings hyaline, 

 crossed by two fuscous bands, one crossing the base of the 

 discoidal cell, the other broader, from the radial cell across 

 the apex of the cubital cell. Nervures black. 



Length 10 mm. 



^ unknown. 



Ilab. Maekay, Queensland (October and November). 



Auchenophorus ceneus, sp. n. 



? . Clypeus broad, rounded anteriorly, with a straight 

 transverse carina before the anterior margin, which is 

 depressed. Head and lliorax opaque, very finely reticulate ; 



