532 MR. R. E. TURNER ON [May 12,, 



not developed. The recurrent nervure is received by the cubital 

 cell beyond three-quarters from the base ; the radial nervure is 

 not continued beyond the end of the radial cell. 



Orabro mackayensis, sp. n. 



2 . Mandibles tridentate at the apex, the inner tooth much the 

 shortest, the central tooth longer than the outer one. Clypeus 

 slightly advanced, truncate at the apex, with a longitudinal carina 

 from the base, clothed with short silvery pubescence. The pubes- 

 cence on the cheeks pale golden. Head finely and very closely 

 punctured ; eyes very large, the front between them narrow and 

 concave ; a very shallowdy depressed, longitudinal, and almost 

 smooth mark on the inner margin of the eye near the summit ;. 

 a short longitudinal sulcus below the anterior ocellus and another 

 on the vertex almost reaching the anterior ocellus ; the posterior 

 ocelli as far from each other as from the eyes. Pronotum veiy 

 short, transverse, raised and thickened, not prominent at the 

 angles ; mesonotum finely rugose. Median segment short, the 

 space at the base enclosed by carinpe, longitudinally striated, with 

 an obscure median carina, broadly rounded at the apex ; the 

 posterior truncation very obscurely transversely striated, with a 

 median sulcus. Abdomen subovate, very minutely and closely 

 punctured ; the first segment narrow at the base, the apex about 

 two-thirds of the breadth of the second segment, only a little 

 longer than the second segment ; the apex of the fifth segment 

 clothed with pale golden pubescence ; the apical segment lanceo- 

 late, smooth and recurved at the sides, with a tuft of long golden 

 pubescence on each side. 



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

 antennae, the pronotum (very narrowly interrupted in the middle 

 and more broadly on the sides), a spot on each side near the base 

 of the scutellum, a transverse line on the postscutellum, a spot 

 near the middle of the enclosed space on the median segment, a 

 broad transverse band near the apex of the first abdominal seg- 

 ment, a small spot on the sides of the second and fourth segments, 

 and a transverse band narrowly interrupted in the middle on the 

 fifth segment, yellow ; the four basal joints of the flagellum, the 

 tegula?, the apical margins of the abdominal segments, the tibiae, 

 tarsi, and extreme apex of the femora and cox?e ferruginous brown. 

 Wings pale flavo-hyaline, nervui-es pale ferruginous. 



Length 10 mm., exp. 17 mm. 



Hab. Mackay, Queensland {Turne7-) ; April. 



The second joint of the flagellum is about one-third longer than 

 either the first or third, and neai-ly equal in length to two-thirds 

 of the distance between the eyes at the base of the antenna?. 



Crabro ordinarius, sp. n. 



5 . Mandibles bidentate at the apex, the teeth long and of 

 about equal length. Clypeus densely clothed with silvery pubes- 

 cence, with a carina from the base to beyond the centre, with a 



