76 REVISION OF THE THYNNIDiE OF AUSTRALIA, II., 



& 10 . Hypopygium truncate, the apical 



spine recurved. annul attts Kirby 139 



b 5 . Wings dark fuscous. 



a 6 . With a spine on each side of the sixth ventral 



abdominal segment. purpureipennis Westw. 115 



6 6 . Without a spine on the sixth ventral segment. 



lubricus. 114 



b 3 . The first dorsal segment of the abdomen with a tubercle 



at the base. oppositus Sm. 135 



b. The second recurrent nervure received by the third cubital 

 cell close to the base. 

 a 2 . The sixth joint of the maxillary palpi rudimentary. 



klugii Guer. 105 



b 2 . The sixth joint of the maxillary palpi normal. 



a 3 . The labrum long and narrow, very strongly bilobed. 

 a 4 . First ventral segment of the abdomen with an acute 

 tubercle. 

 a 5 . Hypopygium rounded at the apex, with a short 

 spine. 

 a 6 . The second dorsal segment of the abdomen with 

 a transverse depressed line at the base. 

 a 7 . The median segment rounded at the sides. 

 a 8 . The anterior margin of the pronotum yellow. 

 a 9 . Abdomen black, marked with yellow or 

 white. 

 a 10 . Abdomen sparsely punctured. 



a 11 . Pronotum yellow with a black spot 

 in the middle and on each side. 



albomaculatus Sm. 95 

 b 11 . Anterior margin only of the pro- 

 notum yellow. 

 a 12 . Front smooth and shining. 



rotundiceps Sm. 89 

 6 12 . Front punctured. 



a 13 . Median segment black. 



rotundiceps Sm. var. propinquus Sm. 89 

 b 13 . Median segment marked with 



white. cingidatus. 90 



b 10 . Abdomen closely punctured or rugulose. 

 a 11 . The sixth abdominal segment with 

 a yellow spot on each side. 



jucundus Sm. 87 

 ft 11 . The sixth abdominal segment 

 wholly black. 



