302 MR. R. E. TURNER OX THE [Feb. 15. 



punctures, as long as the scutellum and broadened from the base, 

 the surface of the posterior truncation almost smooth. First 

 abdominal segment truncate at the base, sparsely punctured 

 immediately above the truncation, then irregularly transversely 

 striated, the striae low and about four in number, the apical 

 margin raised, with a deep groove before it ; second segment 

 with many transverse striae, the striae irregular and more than 

 twelve in number, the basal striae very low, those near the apex 

 moderately elevated ; segments 3-5 smooth at the base, sparsely 

 punctured at the apex ; fifth ventral segment coarsely longitu- 

 dinally striated. Pygidium not much narrowed at the base, 

 obliquely striated near the base, defiexed posteriorly ; the 

 posterior surface ovate, with three or four arched carina? at the 

 base ; the extreme apex of the dorsal plate smooth, rounded a,nd 

 slightly recurved, not reaching to the apex of the ventral plate. 



Black ; head and prothorax ferruginous red ; sometimes the 

 scutellum is red also. 



Length 15-17 mm. 



Flab. South Perth, W. A. (H. M. Giles). S 2 in cop. 5 J , 3 2 ■ 

 January and February. One female in the Berlin Museum from 

 Western Australia. 



Zaspilothynnus radialis, sp. n. (Plate XXXI. fig. 11, ^ .) 



d 1 . Clypeus large, rather prominent and almost pointed at the 

 base, broadly truncate at the apex, finely longitudinally striated. 

 Antennae shorter than the thorax and median segment combined, 

 of even thickness throughout ; the interantennal prominence 

 broadly V-shaped. Head closely punctured, a very fine longi- 

 tudinal carina from the apex of the interantennal prominence 

 almost reaching the anterior ocellus. Posterior ocelli a little 

 further from the eyes than from each other. Pronotum shallowly 

 and not very closely punctured, nearly as broad as the head, 

 only slightly narrowed anteriorly, the anterior margin straight 

 and raised. Mesonotum closely, scutellum sparsely punctured. 

 Median segment obliquely truncate from the postscutellum, very 

 finely and closely punctured on the sides, shallowly punctured - 

 rugulose on the surface of the truncation. Abdomen shallowly 

 punctured, the segments not constricted, as long as the head» and 

 thorax combined, slightly narrowed at the base and apex ; the 

 sixth ventral segment with an acute spine on each side at the 

 apical angles. Dorsal plate of the seventh segment flatly pro- 

 duced and rounded at the apex. Hypopygium obliquely striated 

 above, longer than broad, with a short outwardly curved spine 

 on each side at the base, then sharply narrowed and produced 

 with almost parallel sides to the base of the acute apical spine. 

 The groove between the two basal ventral segments is very shallow. 

 Second and third cubital cells nearly equal in length on the radial 

 nervure, the second recurrent nervure received by the third 

 cubital cell at one-fifth from the base. 



Orange-yellow ; antennae, the extreme apex of the mandibles, 



