BY ROWLAND E. TURNER. 137 



Head closely and deeply punctured, the carina from the clypeus 

 continued on front, not reaching anterior ocellus; front and 

 clypeus clothed with short white pubescence. Thorax and median 

 segment closely punctured, scutellum prominent at apex, obliquely I 

 depressed at base. Abdomen elongate, sparsely and shallowly \ 

 punctured, segments 2-5 with an impressed transverse line near 

 base; hypopygium with a long apical spine and a short spine on 

 -each side. Black; disc of mesonotum, apex of scutellum and the 

 six apical abdominal segments ferruginous; mandibles except at 

 apex, clypeus except the carina, two short oblique lines between 

 antennae, margins of pronotum, tegulse, a small spot on meso- 

 pleurse, a longitudinal line from middle of mesonotum to posterior 

 margin and one on each side reaching from tegulse to angles of 

 scutellum, a spot in middle and one on each side at anterior angles 

 of scutellum, margin of scutellum at sides, postscutellum, a trans- 

 verse mark in middle of median segment narrowly connected with 

 a, spot at apex, a transverse mark on each side of the first five 

 .abdominal segments near the apical margin and a spot at apex of 

 femora creamy-white. Length 10 mm. 



Hab.—Vovt Darwin (Walker). Type in Brit. Mus. 



Very near T. excell'ens Sm., but the clypeus is much narrower 

 at the apex, the head and thorax are much more strongly sculp- 

 tured and the abdominal segments are not as strongly depressed 

 at the base. There is much more pubescence on the head and 

 thorax, and the colour differs considerably. 



64. T. ( Aeolothynnus) dimidiatus Westw. 



Thynnus (Thynnoides) dimidiatus Westw., Arc. Ent. ii. 2, 

 p.l21,R76, fig.5, 1844(<J). 



Thynnus heinricheri D.T., Cat. Hym. viii. 108, 1897. 



(J. Anterior margin of pronotum straight, as broad as head; 

 median segment rounded, a little broader than long. Abdomen 

 elongate; hypopygium ending in three long, acute spines, the 

 central spine very long and slightly recurved. Black; abdomen 

 except the basal segment ferruginous. 



Hab.— Albany, W.A. (Westwood). 



