106 REVISION OF THE THYNNIDiE OF AUSTRALIA, II., 



long on the sides. Thorax very closely punctured; median seg- 

 ment long, finely punctured. Abdomen elongate, flattened 

 beneath, sparsely punctured, shining; a short median sulcus from 

 the base of the first segment and a slightly depressed transverse 

 line near the base of segments 2-5, the two apical segments with 

 long thin pubescence and more strongly punctured. Hypopygium 

 subtriangular, with a small apical spine, not projecting very far 

 beyond the epipygium. Claspers very long and slender. Pos- 

 terior femora armed with a large acute tubercle near the base 

 beneath. Opaque black ; mandibles, anterior margin of the 

 clypeus, a narrowly interrupted line on the anterior margin of 

 pronotum and a small spot on postscutellum pale yellow; a spot 

 on each side on the occiput, tibiae, tarsi and femora, second, 

 third and fourth abdominal segments dark ferruginous; base of 

 the femora black, fourth abdominal segment more or less stained 

 with black. Wings hyaline, faintly iridescent, nervures black. 

 Length 12 mm. 



Q. Head suborbicular, slightly convex, smooth and shining. 

 Pronotum longer than broad, the sides parallel, shining, sparsely 

 punctured, with a sulcus from the anterior margin to the centre. 

 Median segment broadened from the base, short, obliquely 

 truncate posteriorly, and punctured. Abdomen sparsely punc- 

 tured, first segment with the apical margin depressed, leaving a 

 transverse carina before the apex. Second segment with two 

 strongly raised transverse carinas, the apical margin recurved 

 forming a third, less prominent, carina. Pygidium oblique, the 

 sides parallel, not very narrow, rounded at the apex. Fuscous, 

 the head bright ferruginous; pro- and mesothorax, pygidium and 

 legs fusco ferruginous: second abdominal segment bright testa- 

 ceous, carinas fusco-ferruginous; the segments beneath at the 

 sides pale testaceous. Length 6 mm. 



Hob.— Bombala, N. S. W. (Froggatt). Types in Coll. Froggatt. 



The male is very near T. calcaratus Sm., but that insect is black 

 except the yellow mandibles and margin of the clypeus and the 

 ferruginous tibiae and tarsi. The tubercle on the posterior 

 femora is in the middle in T. calcaratus, not near the base as in the 



