1908.] AUSTRALIAN FOSSORIAL WASPS. 533 



smooth and shining, oblique, triangular truncation at the apex. 

 Head and thorax very closely and finely punctured, the front and 

 cheeks clothed with pale golden pubescence ; the posterior ocelli 

 far apart, further from each other than from the eyes. The 

 antei'ior margin of the pronotum raised, with a ti'ansverse groove 

 behind it on the sides. A faint and broad depression from the 

 anterior margin of the mesonotum to the middle ; the scutellum 

 faintly depressed in the middle. Median segment short, truncate 

 posteriorly, the enclosed space at the base broadly rounded at the 

 apex, obliquely striate rugose, with a very broad median sulcus in 

 which lie several transverse strife ; the face of the truncation 

 pubescent, very finely rugose, with a strong median sulcus. Abdo- 

 men very closely and minutely punctured, not petiolate, the apical 

 segment lanceolate. 



Black ; a spot at the base of the mandibles, the scape of the 

 antenna?, the first joint of the flagellum, the anterior margin of 

 the pronotum narrowly interrupted, the posterior angles of the 

 pronotum, a spot on each side at the basal angles of the scutellum, 

 a transverse line on the postscutellum, a trilobed mark at the 

 base of the first abdominal segment, a transverse band at the base of 

 the third and fourth segments, a line on the anterior tibife, and a 

 spot near the apex of the posterior tibiie, yellow ; the tegulag and 

 the legs (except the coxfe) ferruginous. Wings hyaline, nervures 

 ferruginous. 



(^ . As in the female, but without the yellow mai-k on the first 

 abdominal segment, and there is a dull yellow transverse band on 

 each side of the fifth and sixth segments. 



Length, 5 9-11 mm., (5 9 mm.; exp., (S 12 mm., 5 17 mm, 



Sab. Mackay, Queensland {^Tv,rner) ; February-May. 



The second joint of the flagellum is longer than the third in 

 both sexes and more than twice as long as the first. The eyes are 

 separated at the base of the anteniaa? by a distance rathei- ex- 

 ceeding one-third of the length of the scape in the female and by 

 a little less in the male. The groove on the mesopleura? is not 

 well- developed. 



Crabro conglobatus, sp. n. 



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

 about equal length. Clypeus small, advanced in the middle, 

 strongly emarginate at the sides, slightly convex, without a carina, 

 and clothed with pale shining pubescence. Eyes separated at the 

 base of the antennse by a space equal to one-third of the length of 

 the scape ; the second joint of the flagellum about three times as 

 long as the first and half as long again as the third. Posterior 

 ocelli a little nearer to each other than to the eyes, and more than 

 half as far again from the posterior maigin of the head as from 

 each other. Head and thorax very closely and finely punctured ; 

 the cheeks clothed with very pale golden pubescence. Pronotum 

 narrower than the head, transverse, the angles not prominent ; 

 mesopleurte smooth and shining, with a well-marked groove. 



