530 MR. R. E. TURNER ON [May 12^ 



at the base of the median segment coarsely rugose with a deep 

 median sulcus. Abdomen short, not petiolate ; the first segment 

 subtruncate at the base, depressed on the apical margin, the 

 second segment the longest. All the segments opaque, very 

 closely and finely punctured. The recurrent nervure is received 

 near the apex of the cubital cell. 



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

 antenna?, the anterior and posterior angles of the pronotum, the 

 postscutellum, the tibia^, and the apex of the femora yellow ; the 

 flagellum, the tegula?, the base of the femora, the tarsi, and the 

 abdomen light ferruginous, the first abdominal segment with an 

 obscure yellow band at the apex. Wings hyaline, nervures f usco- 

 ferruginous. 



J . As in the female, but the pronotum is entirely yellow and 

 the postscutellum black. 



Length, 2 8 mm., J' 6 mm. 



Rab. Townsville, Queensland (Dodd) ; Febi'uary. 



Crabro hebetescens, sp. n. 



5 . Mandibles tridentate at the apex, the inner tooth the 

 shortest, a strong acute tooth just before the middle of the inner 

 margin. Maxillary palpi six-jointed, labial palpi four-jointed. 

 Clypeus clothed with shining white jiubescence, with a carina 

 from the base to the apex, truncate at the apex, with two short 

 teeth on each side. Head large, finely and closely punctured, 

 the cheeks clothed with silvery pubescence. Antenna? inserted 

 very close to the eyes, the second joint of the flagellum about half 

 as long again as the first or third. Eyes at the base of the 

 antennae separated b}" a distance about equal to the length of the 

 two basal joints of the flagellum ; front very narrow, the groove 

 for the scape reaching the eyes ; the facets of the eyes larger near 

 the base of the antennae than elsewhei-e. Posterior ocelli very far 

 apart, as far from the eyes as from each other, l^ut nearer to each 

 other than to the posterior margin of the head, which is straight. 

 Pronotum more than two-thirds of the breadth of the head, very 

 short and transverse, the anterioi- margin raised. Thorax punc- 

 tured, the mesopleurpe strongly grooved for the anterior femora. 

 Median segment short, subtruncate posteriorly, the enclosed space 

 at the base very broadly rounded and rugose ; the face of the 

 truncation finely transversely striated, with a delicate longitudinal 

 carina. Abdomen ovate, shining and finely punctured, the apical 

 segment lanceolate. 



Black ; the mandibles at the base, the scape of the antennae, 

 the anterior mai-gin of the pronotum, interrupted narrowly in the 

 middle, the tubercles at the posterior angles of the pronotum, a 

 small spot on each side at the base of the scutellum, a spot on 

 each side of abdominal segments 1-5, the tibiae above, and the 

 basal joint of the tarsi creamy white. Wings hyaline, nei'vures. 

 black, the tegulae fuscous. The recurrent nervure is received by 

 the cubital cell at about three-quarters from the base, the cubital 



