BY ROWLAND E. TURNER. 229 



shallow depression on each side between base of antenna and eye. 

 Eyes almost round, situated some distance from base of mandibles. 

 The whole head shining, with minute punctures. Pronotum 

 finely punctured, nearly twice as broad as long; median segment 

 short, obliquely truncate posteriorly, delicately punctured. Abdo- 

 men shining, segments smooth at base, punctured at apex; first 

 segment vertically truncate anteriorly, depressed on apical margin, 

 with a curved mark before apex strongly emarginate in middle. 

 Second segment with three transverse carinse, and the apical 

 margin raised, one or two obscure striae between third carina and 

 ^pex. Pygidium oblique, truncate to apex, lanceolate, very 

 narrow, slightly widened to apex, with delicate diverging 

 marginal carinse before the apical truncation. Fifth segment 

 beneath coarsely longitudinally striated. Entirely castaneous. 

 Length 9 mm. 



Hab.— Champion Bay(Du Boulay; $); N.W. Coast(<J9; Brit. 

 Mus.). 



184. T. SUBINTERRUPTUS Sm. 



Thynnus subinterruptus Sm., Trans. Ent. Soc. Lond. 1868( C J)- 

 Thynnus /rater D.T., Cat. Hym. viii. 106, 1897((?). 



(J. Clypeus broadly truncate anteriorly, finely punctured, 

 narrowly truncate at base and connected by a broad carina with 

 the interantennal prominence. Head and thorax finely punctured 

 rugulose, scutellum punctured. Anterior margin of pronotum 

 raised and broadly emarginate. Scutellum rather long, sub- 

 triangular. Median segment oblique from just behind post- 

 scutellum, rounded at sides, closely punctured, with long grey 

 pubescence. Abdomen smooth, with a few punctures along the 

 apical margins of the segments, and a depressed transverse 

 line, slightly curved in centre near base of segments 2-6. Apical 

 segment rounded, rugose. Hypopygium with a small spine at 

 basal angles, thence broadly produced, subtruncate at apex with 

 a curved apical spine. Otherwise as in Smith's description. 



Hab. — Champion Bay, W.A.(Du Boulay). 



