1908.] AUSTRALIAX FOSSORIAL WASPS. 529 



S • As in the $ . The apical segineut of the abdomen is 

 rounded. 



Length, $ 8 mm., S 6 mm. 



Hah. Mackay, Queensland {Turner) ; March to May. Towns- 

 ville, Queensland (Dodd). 



Crabro perlucidus, sp. n. (Plate XXVI. fig. 15.) 



5 . Mandibles bidentate at the apex, the inner tooth a little 

 the longest. Clypeus strongly convex at the base, clothed with 

 silvery pubescence, with an obliquely depressed smooth truncation 

 to the middle of the apical margin. Antennae inserted nearly 

 twice as far from each other as from the eyes, the first joint of 

 the flagellum longer than the second ; the eyes separated from 

 each other at the base of the antennfe by a distance exceeding 

 half the length of the scape. Posterior ocelli a little nearer to 

 each other than to the eyes, half as far again from the posterior 

 margin of the head as from each other. Head and thorax smooth 

 and shining ; the pronotum slightly depressed, rounded at the 

 anterior angles ; scutellum very finely punctured. Median seg- 

 ment very short, steeply sloped posteriorly, the enclosed space at 

 the base irregularly oblicjuely striated, with a depressed, transverse, 

 •coarsely punctured sulcus at the base ; a median sulcus from the 

 base to the apex. Abdomen shining, very minutely punctured, 

 nearly as long as the head and thorax united ; the first segment 

 as long as the second, twice as broad at the apex as at the base 

 and half as bi-oad as the apex of the second segment. Pygidium 

 ■elongate triangular. 



Black ; the scape of the antennae and the anterior and inter- 

 mediate legs yellow, the intermediate legs stained with ferruginous ; 

 the flagellum, posterior legs, and abdomen bright ferruginous ; 

 the tegulfe testaceous. Wings hyaline, nervures black. 



The cubital cell receives the recurrent nervure at two-thirds 

 from the base ; the radial cell receives the transverse cubital 

 nervure before the middle. 



Length 7 mm., exp. 10 mm. 



Hab. Mackay, Queensland ( T^wwer) ; May. 



Crabro doddii, sp. n. 



2 . Olypeus a little produced and truncate at the apex, with a 

 median carina, clothed with silvery pubescence. Antennae inserted 

 twice as far from each other as from the eyes ; the second joint of 

 the flagellum small, shorter than the first. Eyes separated from 

 each other at the base of the antennae by a distance equal to two- 

 thirds of the length of the scape, strongly divergent towai'ds the 

 vertex. Posterior ocelli a little furthei- from each other than from 

 the eyes, but nearer to each other than to the posterior margin of 

 the head. Head finely punctured-rugose ; the front opaque, with 

 sparse silvery pubescence. Thorax i-ugose, the pronotum trans- 

 verse, almost a,s broad as the head, the anterior angles prominent. 

 Mesopleura? without a groove for the femora. The enclosed space 



34* 



