486 MR. R. E. TURNER ON [May 12, 



being more than half as long on the radial as on the cubital 

 nervure ; the radial cell is short, not more than equal to the length 

 of the second cubital cell on the cubital nervure. 



Black ; the mandibles except at the apex, the tegulee, tibife, 

 tarsi, and the apex of the femora light ferruginous, the scape of 

 the antenme beneath fuscous. Wings hyaline, nervures fuscous. 



A little grey pubescence on the sides of the abdominal segments, 

 otherwise bare. 



Length 6 mm., exp. 10 mm. 



Hah. Mackay, Queensland (Turner) ; ISTovember. 



Tachysphex fortior, sp. n. 



$ . Clypeus shining, strongly but sparsely punctured at the 

 apex, moderately convex at the base, then almost vertically 

 depressed, and subtruncate on the apical margin. Antennje 

 inserted as far from each other as from the eyes ; the second joint 

 of the flagellum twice as long as the first, a little shorter than the 

 third or fourth and about equal to the fifth. Eyes separated on 

 the vertex by a distance scarcely greater than the length of the 

 third joint of the flagellum. Head opaque, very minutely 

 punctured ; the front very feebh^ convex, divided by a rather 

 strong longitudinal sulcus which reaches the anterior ocellus and 

 is continued behind it to the posterior margin of the head. 

 Posterior ocelli subovate, situated on a convexity, with a small 

 deep depression behind them. Pronotum depressed below the 

 mesonotum, the slope almost vertical ; mesonotum subopaque, 

 nearly twice as broad as long. Median segment opaque, shorter 

 than the mesonotum, finely sha greened, vertically truncate 

 posteriorly, the face of the truncation rather finely transversely 

 striated, with a median sulcus. Abdomen subopaque ; the apical 

 margin of the segments feebl}^ depressed, very broadly in the 

 middle, and thinly clothed with grey pubescence ; the apical 

 segment smooth, with a few scattered punctures near the base, 

 subcarinate longitudinally in the middle and pointed at the apex. 

 Tarsi strongly spinose, the comb of the anterior tarsi well 

 developed ; the legs stout. The first recurrent nervure is received 

 almost as far from the second as from the base of the second 

 cubital cell ; the third cubital cell is strongly curved on the outer 

 margin and reaches on the cubital nervure nearly two-thirds of 

 the way from the apex of the second cubital cell to the outer 

 margin of the wing. 



Black ; the pubescence greyish Avhite ; the tegulae, the anterior 

 tarsi, the two apical joints of the posterior and intermediate 

 tarsi, and the extreme base of the tibia? ferruginous. 



Length 10 mm. 



Eal. S.W. Australia {Du Boulay). 



Type in British Museum. 



Allied to T. dehilis described in this paper, but is a much more 

 stoutly built insect and the legs are stronger and much more 

 spinose. 



