84 REVISION OF THE THYNNID^ OF AUSTRALIA, II., 



a 6 . Abdomen punctured, without pubescence. 



jlavilabris Guer. 169 

 b G . Abdomen very finely punctured, with fine pubes- 

 cence, picipes Westw. 170 

 b 5 . Abdomen not wholly black. 



a G . All the dorsal segments of the abdomen orange- 

 brown. 

 a 7 . Wings flavo-hyaline. 



a 8 . Median segment with golden pile. 



shuckardi Guer. 172 

 b 8 . Median segment with white pile. 



guerinii Westw. 1 73 

 b 7 . Wings fuscous. obscuripennis Guer. 171 



6 6 . Two or more apical abdominal segments black. 

 a 7 . Abdomen orange-brown above, the two apical 



segments black. flaviventris Guer. 174 



b 7 . Abdomen black, banded with yellow or obscure 

 ferruginous on the four or five basal segments. 



varipes Sm. 175 



6*. Abdomen marked with yellow above and beneath. 

 a 5 . Thorax entirely black. seductor Sm. 164 



b 5 . Thorax marked with yellow. 

 a 6 . Epipygium punctured. confusus Sm. 162 



b 6 . Epipygium striated. fiavopictus Sm. 176 



b s . Median segment rounded at the sides. 



a 4 . Hypopygium rather broadly truncate at the apex, 

 with a spine. 

 a 5 . Abdomen sparsely punctured, broadly banded 



with yellow. subinterruptus Sm. 184 



b 5 . Abdomen closely punctured, narrowly banded 



with yellow. frenchi 180 



b*. Hypopygium triangular from near the base, with a 

 short spine or none. 

 a 5 . Abdomen banded with yellow. 

 a 6 . Hypopygium without an apical spine. 



assimilis Sm. 179 

 6 6 . Hypopygium with an apical spine. 

 a 7 . Median segment wholly black. 



a 8 . The yellow bands on the abdomen inter- 

 rupted, agilis Sm. 178 

 b 8 . The yellow bands on the abdomen not 



interrupted. insidiator Sm. 182 



b 7 . Median segment marked with yellow. 



