1910.] FOSSORIAL WASPS OF AUSTRALIA. 349 



closely punctured. Second joint of the flagellum almost as long 

 as the first and third combined. Eyes separated on the vertex 

 by a distance almost equal to the length of the second joint of 

 the flagellum. Thorax very finely and closely punctured ; the 

 mesonotum margined with shining silvery pubescence on the 

 sides above the tegulae ; the scutellum with a delicate median 

 sulcus. Median segment very delicately punctured-rugulose, 

 narrowed to the apex and very steeply sloped posteriorly, with a 

 large triangular puncture at the apex and a longitudinal sulcus 

 on the posterior slope, the dorsal surface thinly clothed with 

 cinereous pubescence, the sides and the mesopleuraa more closely 

 clothed with greyish-white pubescence. Six spines on the basal 

 joint of the anterior tarsi, including the apical spine. Abdomen 

 clothed with rather pale golden pile, thickest and brightest on a 

 broad band at the apex of each segment and on the pygidial area, 

 which is elongate -triangular, very narrowly rounded at the apex. 

 The third cubital cell is very long on the cubital nervure, 

 approaching as near as half its own length to the outer margin 

 of the wing, and about equal in length to the second on the 

 radial nervure. 



Black ; the tegulae, the spines of the tibiae and tarsi, and the 

 apical margin of the abdominal segments (broadly on the dorsal, 

 very narrowly on the ventral surface) testaceous. Wings pale 

 flavo-h valine, nervures pale ferruginous. 



Length 19 mm. 



Hah. Townsville, Q. (F. P. Docld). January. 



This fine species is nearly related to monetarius Sm., from 

 which it differs in the narrower pygidial area, the greater length 

 of the third cubital cell on the cubital nervure, and the paler 

 colour of the wings and of the pile on the abdomen. The sulcus 

 on the scutellum is absent in the type of monetarius, which is from 

 North India. The species has a wide range in Africa, but in 

 specimens I have seen from West Africa the eyes approach each 

 other more closely on the vertex than in the typical form, and 

 the pygidial area is narrower as in the Australian species. 



Sphodrotes cygnorum, sp. n. 



5 . Mandibles very deeply and rather widely excised on the 

 outer margin. Clypeus very broadly rounded anteriorly. Head, 

 thorax, and abdomen closely and coarsely punctured, the punctures 

 oh the abdomen finer than on the thorax. Inner margins of the 

 eyes diverging very slightly towards the clypeus ; posterior ocelli 

 nearly as far from each other as from the eyes ; the posterior 

 margin of the head broadly emarginate. Pronotum much 

 narrower than the head, narrowed and steeply sloped anteriorly. 

 Median segment much broader than long, very coarsely rugose, 

 longitudinally striated at the base, almost vertically truncate 

 posteriorly, the surface of the truncation coarsely rugose, the 

 sides of the segment coarsely obliquely striated. Abdomen broad 

 at the base, narrowed and pointed at the apex, the first segment 



