40 Mr. W. F. Kivby 07i Five new 



reddish in the male) black. Four distinct submarginal cells. 

 Legs redder than in the male, with the coxa3 and trochanters 

 whitish. 



I was at first inclined to refer these specimens (which I 

 think I am correct in placing together as sexes) to P. cas- 

 tanea^ Kirb. ; but in that species the scutelluni is much less 

 thickly punctured. 



Perga sericea. 



Long. Corp. 11 millira. 



Male. — Antennae six-jointed, the club as long as the three 

 preceding joints ; joint 3 rather longer than 4 and 5, and 

 slightly constricted near the base. Head above, thorax, 

 and pleura thickly and closely punctured ; head black above, 

 including the antennre and mandibles, clypeus and labrum 

 testaceous ; orbits broadly testaceous, from outside the an- 

 tennas to the hinder rim of the head, but ending in a point 

 where the occiput becomes concave. Grooves outside the 

 outer ocelli indistinct. Prothorax testaceous, with the extreme 

 front black, this colour curving slightly forwards on the sides. 

 Mesothorax and scutelluni black ; a wide stripe on the pleura, 

 narrowed behind, the hinder borders of the mesonotum 

 (narrowly) and the lateral margins and hinder angles of the 

 scutelluni (rather broadly) testaceous. Mesonotum with the 

 sutures slightly marked ; a groove on the frontal lobe and 

 two slight ridges on each of the lateral lobes; scutellum 

 slightly grooved ; the terminal tubercles unusually small. 

 Wings hyaline, with rufous costa and uervures, with three 

 or four submarginal cells ; nervures greatly interrupted with 

 bulla. Legs testaceous, the extremities of the hind femora, 

 of the hind tibia', and of the joints of the tarsi black. Abdomen 

 blue-black above, with a fine white silky pubescence ; ter- 

 minal segment and under surface testaceous. 



Not closely allied to any species before me, but much 

 resembles the description of Pseudoperga venti-alis, Guer., 

 from Tasmania, though apparently distinct. 



Perga sellata. 



Long. Corp. 12^ millini, 



Male. — Antennffi six-jointed, the club as long as the three 

 preceding joints. 



Head, thorax, and pleura thickly and closely punctured ; 

 head luteous, the tips of the mandibles black; vertex between 

 the eyes above black, from a curve just behind the antemial 



