1908.] AUSTRALIAX FOSSORIAL WASPS. 481 



steeply sloped, not very strongly raised in the middle; the meso- 

 notum and scutellum subopaque, very closely and microscojjically 

 punctured, a very short, impressed, longitudinal line on each side 

 of the mesonotum twice as far from the middle as from the 

 tegulse. Median segment a little longer than broad, rather 

 indistinctly transversely striated, the stripe more distinct at the 

 base than at the apex, with an obscure carina from the base 

 to the apex ; the posterior truncation finely transversely striated, 

 with a deep median sulcus. Abdomen subopaque, the three basal 

 segments Avith bands of dull silvery pubescence on the apical 

 margin ; the pygidial area rather bi'oad at the base, narrowly 

 rounded at the apex, clothed with pale fulvous pubescence ; the 

 apex of the first ventral segment finely oblicjuely striated, the 

 second and third sparsely clothed with very short, fine, grey 

 pubescence. The third cubital cell is nearly twice as long as 

 the second on the radial nervure and a little longer than the 

 second on the cubital nervure ; both recurrent nervures are 

 received before the middle of the second cubital cell, the first 

 more than twice as far from the base of the cell as fiom the 

 second. 



Black ; the tarsal ungues fusco-ferruginous. Wings fusco- 

 hyaline, faintly flushed with opalescent blue ; nervures black. 



Length 13 mm. 



Hah. Cairns, Queensland {Turner) ; February to May. 



The mesonotum is only very slightly depressed in the middle on 

 the anterior margin. 



NOTOGONIA ABBREVIATA, Sp. n. 



5 . Mandibles very shalJowly notched on the outer margin ; 

 the clypeus opacjue, very finely and closely punctvu^ed, the apical 

 margin transvei'se and strongly depressed in the middle, the base 

 bare, the middle with rather long, sparse, silvery pubescence 

 changing to fulvous at the apex. Scape with a little short white 

 pubescence beneath ; the first joint of the flagellum half as long- 

 as the second, the foui'tli slightly longer than the second or third, 

 which are nearly ecjual in length to each other. Head opaque, 

 the front clothed with silvery pubescence ; the eyes separated on 

 the vertex by a distance equal to three-quarters of the length of 

 the second joint of the flagellum. Pronotum almost vertical, 

 much higher in the middle than at the sides ; mesonotum very 

 broadly and shallowly depressed in the middle anteriorly, opaque 

 and very minutely punctured ; the pubescence short, sparse and 

 cinereous, that on the mesopleura? also cinereous, with a patch of 

 silver-white pubescence below the base of the anterior wings. 

 Median segment more opaque than the mesonotum, veiy shallowly 

 and obscurely transversely striated, the strife only visible in a 

 strong light, with a lather shallow sulcus from the base to the 

 apex, vertically truncate posteriorly, with a deep longitudinal 

 sulcus on the face of the truncation, the segment is as broad at the 

 base as long, narrowed posteriorly. Abdomen opaque, with broad 



31* 



