268 REVISION OF THE THYNNII)^ OF AUSTRALIA. I., 



as the head ))ut not long. Mesothorax and scutellum strongly 

 punctured, the scutellum strongly rounded at the aj^ex. Median 

 segment strongly punctured, reticulate at the apex and smooth 

 at the extreme base, obliquely truncate posteriorly. Abdomen 

 densely covered with minute shallow punctures; first segment 

 with a short median sulca from the base and a small tubercle at 

 the base beneath; segments 2-4 wdth a small, raised, smooth mark 

 on each side near the apical margin. Epipygium smooth, rounded 

 at the apex. Black; the antennse fusco-ferruginous; legs pale 

 ferruginous marked with yellow; clypeus, mandibles, a line on 

 the anterior margin of the prothorax and the tegulfe yellow. 

 Wings hyaline, slightly iridescent, nervures black. Length 

 6-8 mm. 



2. Unknown. ' 



Hah.— Cape York, Q. 



E. FERRUGINEICEPS, n.sp. 



(J. Head rather large, strongly punctured; clypeus produced 

 moderately, transversely rugose, with a median carina from the 

 base to the apex. Prothorax long, as broad as the head, trans- 

 versely rugulose, the anterior margin raised, the sides not quite 

 parallel. Mesothorax and scutellum strongly punctured, the 

 scutellum subtriangular, narrowl}^ rounded at the apex. Medi?.n 

 segment short, depressed to the apex, finely reticulate, smooth at 

 the base. Abdomen punctured, with a transverse line near the 

 base of segments 2-4, which are almost smooth at the base and 

 on the apical margin. Epipygium at the apex smooth and 

 rounded. Black; head, except the clypeus and mandibles, the 

 five basal abdominal segments, except the base of the first, 

 ferruginous. Tarsi fuscous. Wings hyaline, nervures black. 

 Length 11-13 mm. 



The first abdominal segment has an acute tubercle near the 

 centre beneath. 



9. Unknown. 



Hab. — Sydney. 



Apparently allied to E, castaneiceps, but I have not been able 

 to study the mouth-parts. 



