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



as long, slightly narrowed anteriorly, rounded at the posterior 

 angles. Thorax sparsely punctured ; the pronotum much broader 

 than long, slightly narrowed posteriorly, broadly emarginate 

 anteriorly, with a row of setigerous punctures along the margin. 

 Median segment as long as the scutellum, broadened from the 

 base and obliquely truncate posteriorly, the surface of the trunca- 

 tion almost smooth. First dorsal abdominal segment obliquely 

 striated, the stria? arched in the middle ; second segment with 

 many transverse striae, higher at the apex than at the base ; 

 segments 3-5 with a few scattered punctures near the apex ; fifth 

 ventral segment obliquely striated. Pygidium narrowed at the 

 base, then deflexed, broadened and transversely striated, truncate 

 posteriorly, the surface of the truncation smooth and broad ; the 

 dorsal plate shorter than the ventral, broadly and shallowly 

 emarginate at the apex, the angles of the emargination produced 

 into blunt lobes. Intermediate tibia? broad and thick, the basal 

 joint of the intermediate tarsi broad. 



Length 14-18 mm. 



Yar. b, in copula with J var. b. The surface of the posterior 

 truncation of the pygidium obliquely striated. 



Hob. South Perth, W. A. (H. M. Giles). <$ $ in cop. January. 

 Also in the Berlin Museum from Western Australia (Preiss). 



" Common, some seasons scarcer " (Giles). 



This belongs to the Zaspilothynnus group. 



Zaspilothynnus maturus, sp. n. 



$ . Clypeus without a carina, sparsely punctured, very broadly 

 and shallowly emarginate at the apex. Head slightly convex, 

 shining, sparsely punctured, with a short, longitudinal, frontal 

 sulcus, half as broad again as long and rounded at the posterior 

 angles. Pronotum rather more closely and finely punctured than 

 the head, with a row of large setigerous punctures along the 

 anterior margin, as broad as the head, more than half as broad 

 again as long, slightly narrowed posteriorly. Scutellum and 

 median segment shining, very sparsely punctured ; the median 

 segment shorter than the scutellum, broadened from the base and 

 almost vertically truncate posteriorly. First abdominal segment 

 truncate anteriorly, very sparsely punctured, with a few fine 

 transverse stria? before the apex, the apical margin raised, with a 

 broad groove before it ; second segment with twelve or more 

 transverse carina?, those at the base low and irregular, those at 

 the apex higher ; segments 3-5 shining, sparsely punctured near 

 the apex ; fifth ventral segment longitudinally and coarsely 

 striated. Pygidium narrow at the base, vertically truncated 

 posteriorly, sharply contracted before the base of the truncation, 

 the surface of the truncation large, broadly ovate, with a number 

 of low arched carina? at the base not reaching the middle, the 

 apex smooth. A tuft of long pale hairs on each side at the base 

 of the pygidium. Intermediate tibia? very thick and spinose, the 

 basal joint of the intermediate tarsi broadened. 



