BY ROWLAND E. TURNER. 141 



merits very strongly punctured, almost smooth at base. Entirely 

 fuscous. Length 7 mm. 



Hab. — Cairns and Mackay, Q. (Turner; $Q in cop.). 



67. T. (Aeolothynnus) cygnorum, n.sp. 



<J. Clypeus short and truncate at apex; a short, oblique carina 

 on each side above and between the base of the antennae. Head, 

 thorax and median segment finely and closely punctured; anterior 

 margin of pronotum straight; scutellum elevated and strongly 

 convex, subtriangular, and narrowly truncate at apex. Abdomen 

 elongate, rather sparsely punctured ; segments 2-5 with an 

 impressed transverse line near base, the apical margin of the 

 same segments slightly and very narrowly depressed, second and 

 third segments more strongly depressed at base than the others; 

 apical margin of basal segment narrowly depressed, most broadly 

 so in middle. Hypopygium narrowly subtruncate at apex, apical 

 angles slightly produced, apical spine very strong. Black; base 

 of mandibles, clypeus, except a large black spot in centre 

 narrowly continued to base, interantennal carinse, margins of 

 pronotum, tegulse, a very small spot in centre of scutellum, a 

 spot on each side of first abdominal segment, a narrow trans- 

 verse band on each side of the three following segments above 

 and beneath, and on fifth segment above pale dull yellow; legs, 

 except coxse and trochanters, ferruginous. Wings hyaline, tinged 

 with fuscous, nervures black, stigma ferruginous. Length 12 mm. 



Hab. — Champion Bay, W. A. (Du Boulay). Type in Brit. Mus. 



Closely allied to T. biparlitus. 



68. T. (Aeolothynnus) quadratus Sm. 



Thynnus quadratus Sm.,Cat.Hym.B.M.vii.p.42,n.l 16,1859(9). 



£. Head subrectangular, much broader than long, almost 

 smooth, and hardly at all convex. Pronotum depressed ante- 

 riorly, nearly twice as broad as long, sparsely punctured, with a 

 longitudinal carina from middle to posterior margin and a few 

 long hairs at anterior angles. Median segment closely and finely 

 punctured, almost vertically truncate posteriorly. Abdomen 



