296 MR. R. E. TURNER ON THE [Feb. 15, 



margin. Scutellum very sparsely punctured, slightly depressed 

 on the middle of the apical margin ; median segment more 

 closely and coarsely punctured, less than half as long as the 

 scutellum, steeply sloped and almost smooth posteriorly. First 

 abdominal segment concavo-truncate anteriorly, the dorsal surface 

 Avith two well-marked transverse carina? at the apex and two or 

 three ill-defined transverse stria? before them ; second segment 

 with six strong transverse carinse including the raised apical 

 margin ; segments 3-5 smooth at the base, very sparsely punc- 

 tured near the apex ; fifth ventral segment coarsely obliquely 

 striated. Pygidium deflexed from the base and smooth, truncate 

 posteriorly, the surface of the truncation, twice as long as broad, 

 the sides nearly parallel, the apical margin deeply and broadly 

 emarginate ; the dorsal plate reaching beyond the ventral, smooth 

 and opaque, with a short transverse carina close to the base ; the 

 pygidium narrow and subconcavely depressed just before the base 

 of the truncation. 



Ferruginous brown, the abdomen fuscous or fusco- ferruginous. 



Intermediate tibiae broad and swollen, basal joint of inter- 

 mediate tarsi slightly broadened. 



Length 9 mm. 



Hal. South Perth, W. A. {H.M. Giles). S $ in cop. February. 



" On Melaleuca bloom. Rare." {Giles.) 



The shape of the pygidium is remarkable. This species is 

 doubtfully distinct from morosus Sm. 



Pogonothynnus vestitus Sm. (Plate XXXI. figs. 9 o" , 10 2 •) 



Thynnus vestitus Sm. Cat. Hym. B. M. vii. p. 15 (1859), J; 

 Turn. Proc. Linn. Soc. KS.W. xxxiii. p. 209 (1908), tf . 



S . The hypopygium of the male is lanceolate beyond the basal 

 spines, long and narrow, ending in an acute spine ; similar in 

 shape to that of fenestratus Sm. In the type, the only specimen 

 I had seen until Mr. Giles' collection came to hand, the hypo- 

 pygium was broken. 



$ . Head not quite half as broad again as long, slightly convex, 

 not thick, rounded at the posterior angles, very sparsely and 

 shallowly punctured, shining, the front coarsely punctured in the 

 middle ; a small arched concave space above the base of each 

 antenna extending nearly to the eye. Clypeus without a carina ; 

 scape of the antenna? very finely and sparsely punctured. Pro- 

 notum a little narrower than the head, much broader anteriorly 

 than long, but very little broader posteriorly than long ; broadly 

 emarginate anteriorly, with a row of setigerous punctures along 

 the margin ; the remainder of the pronotum shining and almost 

 smooth. Pleurae smooth and shining ; scutellum narrowed 

 posteriorly, smooth in the middle, punctured on the sides. Median 

 segment shorter than the scutellum, broadened from the base and 

 abruptly truncate posteriorly, almost smooth in the middle and 

 on the face of the truncation, punctured on the sides. Abdomen 



