hymenoptera. 37 



96. Thynnus (Agriomyia) maurus. 



Male. Length 10 lines. — Black : head and thorax finely 

 punctured, the punctures distant on the vertex, disk of the meso- 

 thorax, and on the scutelhim ; the clypeus convex, its anterior 

 margin truncate ; the cheeks, thorax on the sides and beneath 

 covered with cinereous pubescence ; the legs have also a cinereous 

 pubescence ; the wings dark brown, with a bright purple irides- 

 cence ; the apex of the anterior wings pale. Abdomen smooth 

 and shining, and having a few distant minute punctures ; the 

 margins of the segments depressed, and with a transverse im- 

 pres.sed line at the base of each segment ; the ajiical segment 

 above rounded, the ventral plate somewhat triangular, with a 

 minute tooth at the apex ; the sixth ventral segment with a 

 tooth at each posterior lateral angle. 



Hab. Australia. (Coll. W. W. Saunders, Esq.) 



97. Thynnus (Agriomyia) Crabroniformis. 



Male. Length 4 lines. — Black, with yellow bands on the 

 abdomen ; the mandibles and clypeus yellow ; the antennae 

 ferruginous beneath. Thorax : two ol)lique lines on the pro- 

 thorax, a spot on the tegulae, a minute one on the scutellum and 

 the post-scutellum, yellow ; wings hyaline, with the nervures 

 rufo-testaceous ; the tibise, tarsi, and tips of the femora rufo- 

 testaceous, the posterior tarsi yellow, the apical joint ferruginous. 

 Abdomen : the second, fifth, sixth, and seventh segments yellow. 



Hab. Australia. (Coll. W. W. Saunders, Esq.) 



98. Thynnus TAgriomyia) anilitatis. 



Male. Length 6i lines. — Black : head and thorax covered 

 with long pubescence, that on the head above and on the disk 

 of the thorax slightly fulvous ; on the cheeks, thorax beneath, 

 and on the metathorax and legs it is cinereous ; the clypeus with 

 a central longitudinal carina ; the mandibles yellow. The wings 

 hyaline or faintly yellowish, the nervures brown, the stigma 

 black ; the tibi;T; with their calcaria white, the claws of the tarsi 

 ferruginous. Abdomen subpetiolate, the margins of the segments 

 dejiressed, sparingly |)ubescent above, more thickly so beneath. 



Female. Length 4| lines. — Black : the head smooth, shining, 

 and delicately and distantly punctured. Thorax finely rugose, 

 metathorax obliquely truncate ; the articulations of the legs and 

 the s|)ines of the tarsi ferruginous. Abdomen : the basal seg- 

 ment rugose, with a transverse cai'ina near its apex ; the second 

 segment with a transverse carina at the base and apex, with the 

 intervening sjiace coarsely rugose ; the following segment rugose. 



