514 MR. K. E. TURNER ON [May 12, 



long as the first joint and nearly half as long again as the thii'd. 

 Pronotum straight, strongly depressed anteriorly, about two- 

 thirds of the width of the head. Median segment not quite as 

 long as the mesonotum, narrowed and almost vei-tically truncate 

 posteriorly, closely obliquely striated, with a median carina from 

 the base to the apex ; the face of the truncation transversely 

 striated, with a deep median sulcus. Abdomen very minutely 

 punctured, the apical margin of the segments rather broadly 

 depressed, the second segment a little longer than the first or 

 third, the first subtruncate at the base. 



Black; the front covered with fine golden pubescence, the 

 posterior margin of the pronotum with fine silvery pubescence ; 

 the antennas (except the apical joint), the mandibles, tegulse, tarsi, 

 tibife, the apex of the femora, and the abdomen (except the base 

 of the first segment) ferruginous. Wings hyaline, faintly iridescent ; 

 nervures fuscous. 



The first recurrent nervure is received close to the apex of the 

 first cubital cell, the second at the middle of the second cubital 

 cell. The third cubital cell is twice as long on the cubital as on 

 the radial nervure, and the second cubital cell reaches a little 

 more than halfway from the cubital to the radial nervure. 



(5 . The clypeus produced into a point on the middle of the 

 apical margin, the pubescence on the front paler than in the 

 female, and the apical abdominal segment narrowly emarginate at 

 the apex. Otherwise as in the female. 



Length, $ 9 mm., J 7 mm. 



Hah. Mackay, Queensland {Turner) ; September to February. 



This seems to be near P. 2>6ttetieri Le Guillou, bvit is a smaller 

 species and the sculpture of the median segment is very different. 

 I have not seen P. jyelletieri. 



PiSON RUFICORNE Sm. 



$ . Clypeus large, not more than half as broad again as long, 

 truncate at the apex, clothed with short silvery pubescence, very 

 slightly convex. Head and thorax opaque, the front above the 

 base of the antennae and the inner margin of the eyes below 

 the emargination clothed w4th silvery pubescence. Eyes more 

 strongly convergent towards the clypeus than towards the vertex, 

 separated on the vertex by a distance about one-third greater 

 than the distance separating them at the base of the clypeus, the 

 emargination narrow and exceeding in depth the length of the 

 first joint of the flagellum by about one-half. Antennae inserted 

 a little nearer to the eyes than to each other ; the second joint of 

 the flagellum as long as the scape, twice as long as the first joint 

 but only slightly longer than the third, the apical joints 

 moderately thickened. Pronotum very short, the posterior 

 margin straight, depressed below the level of the mesonotum, 

 about one-quarter narrower than the head,. and thinly clothed 

 with short white pubescence. Median segment rather shorter 

 than the mesonotum, narrowed and vertically truncate posteriorly. 



