BY ROWLAND E. TURNER. 215 



teriorly, very narrow just before truncation, with sides concave 

 and obliquely striated; surface of truncation broader than long, 

 rugose at base, apex smooth, rounded and expanding at sides. 



Hah. — Swan River. 



This may prove to be the female of T. confusus Sm. 



164. T. seductor Sm. 



Thynnus seductor Sm., Trans.Ent.Soc.Lond.l868,p.234,n.7( c J). 



(J. Clypeus broadly subtruncate anteriorly, apical angles not 

 prominent, punctured-striate. Interantennal prominence deeply 

 emarginate. Pronotum broadly emarginate anteriorly, the angles 

 slightly produced. Median segment obliquely concavo-truncate 

 from postscutellum, with a small tubercle on sides near base, 

 covered with long grey pubescence. First abdominal segment 

 obliquely truncate anteriorly, as broad at apex as second, divided 

 beneath from second by a shallow groove. Sixth segment without 

 a spine at apical angles beneath; dorsal plate of seventh segment 

 very slightly produced, narrowly rounded at apex, rather faintly 

 longitudinally striated. Hypopygium triangularly prominent at 

 basal angles, thence broadly produced and rounded at apex, with 

 a short, curved, apical spine, above obliquely striated, with a 

 longitudinal carina. 



<J>. Head shining, sparsely punctured, rounded at posterior 

 angles, eyes small and narrow. Thorax and abdomen almost 

 smooth, very sparsely punctured; pronotum nearly as long as 

 broad; median segment almost vertically truncate posteriorly; 

 first abdominal segment vertically truncate anteriorly, trans- 

 versely striated, apical margin raised. Second abdominal segment 

 with many transverse carinas, apical carinse much more prominent 

 than basal. Pygidium obliquely truncate posteriorly, narrow at 

 base and transversely striated between the marginal carinse 

 which diverge to base of truncation; surface of truncation smooth, 

 broadly oval, with three arched carinse near base, epipygium 

 reflexed at apex. Fifth segment beneath transversely striated, 

 rugose at base. Head and thorax light ferruginous, abdomen 



