136 REVISION OF THE THYNNIDiE OP AUSTRALIA, II., 



each side before apex. Hypopygiuui ending in three spines, the 

 central spine long and curving upwards at apex, the other spines 

 short. There is a ferruginous spot on each side of the vertex, 

 otherwise the colour is well described by Smith. 



Q. Head a little longer than broad, smooth and shining, 

 strongly convex, the sides compressed anteriorly and concave. 

 Thorax and median segment narrower than head, sparsely punc- 

 tured; pronotum a little broader than long; median segment 

 oblique from mesonotum. Abdomen sparsely punctured, second 

 segment with four well marked transverse carina?, including the 

 recurved apical margin. Pygidium narrow, lanceolate, truncate 

 posteriorly, the margins raised. Length 7 mm. 



Rah. — S. Australia (Smith). 



62. T. (Aeolothynnus) excellens Sm. 

 Thynnus excellens Sm., Descr. n.sp. Hym. p. 163, n 14, 1879(,J). 

 $. Clypeus broadly truncate at apex, moderately produced, 



convex, with a delicate carina from base to middle, broadly con- 

 nected with the interantennal prominence which is emarginate 

 anteriorly and not much developed. Head delicately rugulose, 

 with a short, fine, longitudinal carina between antennae. Thorax 

 finely and closely punctured; anterior margin of pronotum straight 

 and slightly raised; scutellum prominent at apex, obliquely 

 depressed from middle to base, with a transverse row of large 

 punctures at extreme base. Median segment rounded, delicately 

 rugulose, almost smooth at base. Abdomen elongate, almost 

 smooth; segments 2-5 depressed at base above and below; hypo- 

 pygium ending in a long, slightly recurved spine, with a very 

 short spine on each side. Wings hyaline, nervures testaceous at 

 base, black at apex. 



Hab.—Swim River, W.A. (Smith). 



63. T. (Aeolothynnus) excelsus, n.sp. 



$. Clypeus moderately produced, narrowly truncate at apex, 

 with a delicate carina from base to middle, connected by a narrow 

 carina with the interantennal prominence which is not emarginate. 



