236 Mr. Frederick Smith on 



nervures black, the marginal cell dark fuscous. Abdo- 

 men oblong, rounded at the base, which has a quadrate 

 brown spot, the basal margins of the segments rufo- 

 fuscous, the apical margins narrowly ferruginous ; be- 

 neath, the margins are coloured faintly as above ; the 

 apical segment with a short black spine. The antennae 

 not reaching beyond the scutellum. 



Hab. Champion Bay. 



In the British Museum. 



10, Thynnus (Agriomyia) incensus. 



Male. Length 5i lines. Black, with the two apical 

 segments of the abdomen red. The anterior margin of 

 the clypeus with a narrow yellow border ; the head finely 

 rugose. Thorax as rugose as the head, with the scutellum 

 more coarsely so ; the spines at the apex of the tibiae 

 white ; the wings hyaline, the nervures black ; the meta- 

 thorax with thin cinereous pubescence. The abdomen 

 shining ; the apical margins of the first four segments 

 have, in the centre, a pair of small quadrate white 

 maculae;, the first pair almost united and tapering to a 

 point laterally, and narrower than the two following 

 pairs ; the fourth pair narrow and tapering like the first 

 pair ; the style at the apex of the abdomen black. 



Hab. Champion Bay. 



11. Tliynnus (Agriomyia) haccatus. 



Male. Length 5 lines. Head and thorax black, the 

 abdomen red. The clypeus, mandibles, and a minute 

 spot at the insertion of each antenna, white. The an- 

 terior and posterior margins of the prothorax narrowly 

 edo"ed with white ; tegulfe and post-scutellum white ; the 

 legs ferruginous, with the tarsi dusky ; wings hyaline, the 

 nervures black. Abdomen ferruginous, the base and 

 the apical segment black ; the apical half of the first 

 secyraent is divided from the black base by a transvei'se 

 slightly-interrupted white line ; the four following seg- 

 ments have an oblique, ovate, white spot ; the sixth 

 segment is toothed on each side beneath, and the anal 

 style is tinspinose. 



Hab. Champion Bay. 



