BY ROWLAND E. TURNER. 119 



at apex, with an obscure median carina. Median segment very 

 delicately transversely striated. Abdomen short, subpetiolate, 

 shining and shallowly punctured. Hypopygium narrow, truncate 

 at apex and unarmed. Black; mandibles at base and post- 

 scutellum pale yellow; margins of pronotum obscurely testaceous; 

 mandibles at apex, anterior margin and a small spot on centre 

 of clypeus, a spot on each side of vertex, abdomen except the two 

 apical dorsal segments, and legs except coxae and trochanters 

 ferruginous. Wings hyaline, iridescent, nervures fusco-ferru- 

 ginous. Length 7 mm. 



Hab. —Perth, W.A. Type in Brit. Mus. 



37. T. (Aeolothynnus) generosus, n.sp. 



(J. Clypeus short, narrowly truncate at apex and shallowly 

 punctured. Head finely rugose, interantennal prominence repre- 

 sented only by a small tubercle at base of each antenna, a very 

 delicate, longitudinal, shining carina between antennae reaching 

 half-way to anterior ocellus. Thorax closely and finely punctured; 

 anterior margin of pronotum straight and very slightly raised; 

 scutellum more strongly punctured, with a faint carina from 

 centre to apex, where it is narrowly truncate. Median segment 

 delicately transversely striated, as broad at base as long. 

 Abdomen elongate-fusiform, shining and shallowly punctured, 

 the segments not constricted; first segment with a sulcus from 

 base nearly reaching apex; second segment depressed at base. 

 Hypopygium truncate at apex, with a small spine. Black; 

 anterior margin of clypeus, a spot at base of mandibles, a minute 

 spot at base of antennae, anterior margin of pronotum narrowly 

 interrupted, base of tegulae, a spot on each side of first abdominal 

 segment, and a narrow, curved, transverse mark on each side before 

 apical margin of the four following segments creamy-white; a 

 spot on each side of vertex and legs ferruginous. Wings hyaline, 

 nervures black, stigma fusco-ferruginous. Length 9 mm. 



£. Head smooth and shining, rather broader anteriorly than 

 long, narrowed and rounded posteriorly. Thorax and median 

 segment almost smooth, pronotum as broad as long, with a short 



