1910.] F0SS0RIAL WASPS OF AUSTRALIA. 273 



carinatus. Saussure's description agrees with male specimens 

 sent by Mr. Giles, which closely resemble that species, but are 

 paired with a female which is quite sufficiently distinct. 



2 . Head rather large, nearly twice as broad anteriorly as 

 long, rounded at the posterior angles, but not so strongly as in 

 carinatus, very sparsely punctured, and finely shagreened. Thorax 

 and median segment rather strongly punctured, shaped as in 

 carinatus, but with longer and closer pubescence. Abdomen and 

 pygidium as in carinatus, but the abdomen is broader, the 

 punctures on the third, fourth, and fifth segments coarser and 

 closer, the same segments being also sparsely clothed at the apex 

 with long white hairs, and the raised marks not so strongly 

 curved. The emargination on the intermediate tibia? is less 

 distinct, and the spine shorter and blunt. 



Black ; the antenna?, legs, and pygidium f usco-ferruginous ; 

 the sides of the abdomen and first and second segments at the 

 apex pale luteous. 



Length 7 mm. 



Hob. South Perth, W. A. (R. M. Giles). November. 



ASTHENOTHYNNUS DEDUCTOR, Sp. n. 



S . Clypeus produced and very narrowly truncate at the apex, 

 finely and closely punctured, with a carina from the base not 

 quite i-eaching the apex, the apical margin narrowly depressed. 

 Head finely and closely punctured, with a short, shining, longi- 

 tudinal sulcus on the front ; the interantennal prominence not 

 much developed. Antenna? inserted nearer to each other than 

 to the eyes, shorter than the thorax and median segment com- 

 bined, rather stout throughout, the apical joints very feebly 

 arcuate beneath. Thorax finely and closely punctured, more 

 sparsely on the scutellum ; pronotum narrowed anteriorly. 

 Median segment longer than broad, rounded, minutely punctured. 

 Abdomen slender^ flattened, shorter than the head, thorax, and 

 median segment combined, very delicately punctured, shining, 

 broadened from the base ; the first segment slender, with a 

 deep sulcus from the base not reaching the apex. Hypopygium 

 small, narrow, the sides parallel, subcorneal at the apex, without 

 spines. 



Black ; the base of the mandibles, the inner orbits of the eyes 

 very narrowly as high as the base of the antenna?, two very 

 minute spots between the antenna?, the margins of the pronotum, 

 and the postscutellum yellow ; the apex of the clypeus, the 

 tegular, the second and third abdominal segments, the apex of 

 the first, and the legs, except the coxa?, bright ferruginous. 

 Wings hyaline, slightly iridescent, nervures black, stigma pale 

 ferruginous. 



Length 6 mm. 



Hab. Claremont, W. A. (//. M. Giles). December. 



Nearest to rubromaculatus Turn. 

 Proc. Zool. Soc— 1910, No. XVIII. 18 



