264 REVISION OF THK TIIYNNID.E OP AUSTRALIA, I., 



slightly narrowed anteriorly, broader than long; median segment 

 much broadened at the apex, where it is obliquely truncate. 

 Abdomen subcylindrical, first segment verticall}'' truncate ante- 

 riorly, the two apical segments narrowed, the pygidium pointed, 

 with a small tuft of pubescence at the apex. Chestnut-brown, 

 abdominal segments suffused with fuscous. Length 3-4 mm. 

 Hah. — Mackay,Q ((J9 in cop.). 



E. oscuLANs, n.sp. 



(J. Clypeus very slightly advanced, with a very short carina 

 from the i)ase joining a narrow, oblique, triangular truncation 

 which extends to the apex. Head densely punctured, narrowed 

 behind the eyes. Prothorax long, the anterior margin straight 

 and raised, the raised collar narrowU^ interrupted in the middle. 

 Mesothorax and prothorax very delicately punctured, the pro- 

 thorax niost sparsely; scutellum sparsely punctured, rounded at 

 the apex. Median segment finel}' reticulated, smooth at the base. 

 Abdomen ver}^ delicately and closel}'' punctured, shining, elongate 

 fusiform, the first segment with a short median basal sulca, seg- 

 ments 2-4 with slightly raised marks on each side near the apical 

 margin. Hypopygium rounded, ciliated. Black; a white line 

 on the anterior margin of the clypeus, the triangular truncation 

 of the clypeus white; tibi^ and tarsi of the anterior legs fuscous. 

 Wings hyaline, with a faint fuscous cloud in the radial cell, 

 nervures fuscous. Length 8 mm. 



Hah. — Mackay, Q. 



Nearest to E. vitripeiDiis Sm. 



E. VITRIPENNIS Sm. 



Thynnus {Eirone) vitripennis Sm., Cat. Hym. B. M. vii. p.41, 

 n.ll3,1859(cJ$). 



g. Tlie scutellum is rounded at the apex; the median segment 

 is rounded, depressed at the apex, delicately reticulate, most 

 finely at the base. The abdomen is finely and very- shallowly 

 punctured. The third cubital cell is considerably narrowed 

 along the radial nervure. 



