188 REVISION OF THE THYNNID.E OF AUSTRALIA, II., 



£. Head much broader than long, slightly rounded at posterior 

 angles, sparsely and deepty punctured. Thorax very sparsely 

 punctured; pronotum rectangular, much broader than long, with 

 a row of large setigerous punctures on anterior margin. Median 

 segment short, obliquely truncate posteriorly, minutely and very 

 closely punctured. Abdomen shining, very sparsely punctured; 

 second segment with about nine irregular transverse carina?. 

 Pygidium truncate posteriorly, longitudinally striated, about 

 half as long again as broad, sides nearly parallel. Fifth ventral 

 segment longitudinally striated. Ferruginous-red; truncation of 

 median segment and abdomen above black; an interrupted band 

 on first, third and fourth segments and a spot on each side of 

 second and fifth segments yellow. Pygidium ferruginous. 

 Length 9 mm. 



Hab. — Swan River. Types in Brit. Mus. 



131. T. (LOPHOCHEILUS) SENEX Sttl. 



Thynnus senex Sm, Cat. Hym. B.M. p.19, n. 36, 1859(<J). 



(J. Clypeus broad, convex, broadly truncate at apex, a small, 

 oblique, broadly triangular truncation before apex in middle,giving 

 it an appearance of emargination; finely punctured. Head rugu- 

 lose, interantennal prominence very little developed; a shining, 

 longitudinal line below anterior ocellus. Pronotum long, anterior 

 margin raised with a deep groove behind it. Thorax and median 

 segment finely rugulose. Median segment obliquely depressed, 

 rounded, with a deep depression on each side near basal angles. 

 Abdomen elongate-fusiform, the groove between first and second 

 ventral segments very shallow. Hypopygium triangular, with 

 an apical spine and slight rounded projections at basal angles. 



Hab. — West Australia(Smith). 



132. T. (LOPHOCHEILUS) CONNECTENS Sm. 



Thynnus connectens Sm.,Cat.Hym.B.M.vii p. 45, n. 131,1859(9). 



9. Allied to the female of T. protervus Sm., from which it 



differs as follows. Head and thorax almost smooth, mesonotum 



