1908.] 



AUSTRALIAN FOSSORIAL WASPS. 



461 



Black ; the base of the scape yellow in front ; the mandibles 

 (except the extreme apex), the antennse, abdomen, tibiae, tarsi, and 

 the apex of the femora ferruginous. Wings fusco-hyaline, 

 nervures dark ferruginous. 



The second cubital cell on the radial nervui-e is about one-third 

 of the length on the cubital nervure, the radial cell is longer than 

 in the allied species, and the nervures both on the fore and hind 

 wings are produced, reaching much nearer to the margin. The 

 recurrent nervure is received just before the apex of the first 

 cubital cell. 



Length 8 mm. 



Text-fi.ff. 106. 



1. SarpactopJiilus sulcatus (head). 2. S. steindaclmeri Kohl : ^ organs. 



Sab. Kuranda, near Cairns, Queensland (^Turner) ; January. 



Most nearly allied to H. arator and H. kohlii, but the head is 

 much shorter and broader than in the former species ; the antennse 

 are longer than in other species of the genus and the projDortions 

 of the basal joints of the flagellum very different. 



Harpactophilus arator, sp. n. (Plate XXYI. fig. 1.) 



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

 Clypeus very slightly advanced, obliquely triangularly truncate 

 from the centre to the apex. Head very large, subquadrate, 

 emarginate posteriorly, half as broad again as the mesonotum, 

 exceedingly coarsely striated, the strife longitudinal, curving 

 round the summit of the eyes ; a very strong longitudinal carina 

 starting just below the antei-ior ocellus and produced in the shape 

 of a ploughshare prominently overhanging the base of the clypeus. 

 Eyes not quite reaching the base of the mandibles ; the posterior 

 ocelli nearly twice as far fi-om the eyes as from each other 

 and more than half as far again from the posterior margin of the 

 head as from the eyes. Antennse inserted lower than the base of 

 the clypeus, far apart, as far from each other as from the 

 eyes. Pronotum depressed below the mesonotum, which is 

 coarsely longitudinally striated ; the scutellum short, almost 

 smooth, with a feebly impressed median line. Median segment 



