BY ROWLAND E. TURNER. 123 



minutely punctured; basal segment short, second segment 

 depressed at base; apical margin of the segments depressed, with 

 a raised curved mark on each side. Hypopygium short and 

 small, truncate at apex, with a short spine. Black; vertex, apex 

 of scutellum, legs except coxae and trochanters, and abdomen 

 except a spot at base of first segment light ferruginous; clypeus, 

 interantennal prominence, margins of eyes interrupted at summit, 

 margins of pronotum, a spot on mesonotum, tegulaa and a line 

 above them, a large curved mark on mesopleurse, a spot on 

 scutellum, postscutellum, a large spot on median segment, almost 

 divided in middle, a spot on each side near apex, and a spot at 

 apex of coxae yellow. Length 6 mm. 



Hab.— Adelaide, S.A. (F. Waterhouse). Type in Brit. Mus. 



Near T. decoratus Sm., but the basal abdominal segment is 

 shorter and without the deep longitudinal sulca. The hypopy- 

 gium and interantennal prominence also differ. 



43. T. (Aeolothynnus) mackayensis, n.sp. 



<3 . Clypeus moderately advanced and rather narrowly truncate 

 at apex; interantennal prominence bilobed, divided by a short 

 longitudinal sulcus. Head and thorax very closely and finely 

 punctured, scutellum short. Median segment rounded, depressed 

 at apex, very finely punctured, smooth at base. Abdomen sub- 

 petiolate, slender, fourth segment the broadest; basal segment 

 shining, long and narrow, gradually widened to apex, with a 

 sulcus from base nearly reaching apex; second segment shining, 

 minutely punctured; the remaining segments subopaque, very 

 finely and closely punctured. Hypopygium not very broad, sides 

 almost parallel, rounded at apex, with a short apical spine. 

 Black; mandibles, clypeus, inner margin of eyes broadly, a small 

 spot at base of each antenna, anterior margin of pronotum 

 narrowly interrupted, a small mark on posterior margin before 

 base of wing, a spot in centre and a smaller one at each of 

 anterior angles of scutellum, postscutellum, a spot on mesopleurse, 

 apical half of median segment interrupted by a narrow black 

 line, a spot on each side of first and third abdominal segments 



