56 HYMENOPTERA. 



10. ^ELURUS PILOSULUS. 



Male. Length 5^-7 lines. Black : the head and disk of the 

 thorax clothed with fulvous pubescence, the sides of the head 

 with a long curled fringe of the same colour, the pubescence 

 becoming very pale in worn specimens ; the thorax beneath and 

 the metathorax with cinereous pubescence ; the abdomen covered 

 with changeable pile, in certain lights having a golden lustre. 

 The mandibles and legs ferruginous, the coxae black ; the cheeks 

 produced into an acute tooth at the base of the mandibles ; the 

 posterior margin of the prothorax more or less rufo-testaceous ; 

 the wings hyaline, the nervures ferruginous ; the abdomen sub- 

 petiolate ; the apex with a short acute spine. 



Hub. S. Australia (Lower Plenty). (Coll. R. Bakewell, Esq.) 



11. ^ELURUS RUBELLUS. 



Male. Length 4| lines. Black : head and thorax rugose, the 

 metathorax punctured ; the tips of the mandibles, the tibiae, the 

 tarsi, and the apex of the femora more or less ferruginous ; the 

 cheeks produced into an acute tooth at the base of the mandibles. 

 The head and the thorax above with long fulvous pubescence ; 

 the sides of the thorax and the metathorax with cinereous pubes- 

 cence ; the wings hyaline, the nervures testaceous. Abdomen 

 shining, subpetiolate, and with distant shallow punctures ; the 

 basal segment with a deeply impressed longitudinal line in the 

 middle, not extending to the apex of the segment ; the apical 

 margin of the basal segment, the second, third, and base of the 

 third at the sides, ferruginous ; sometimes the second segment 

 and base of the third at the sides only, ferruginous; beneath, 

 the second, third, and sometimes the fourth, ferruginous; the 

 apical ventral segment with a deep notch on each side and a 

 slighter one within, and having in the middle an acute spine 

 curved upwards. 



Hab. S. Australia (Lower Plenty). (Coll. R. Bakewell, Esq.) 



12. ^ELURUS FULVIFRONS. 



Male. Length 6 lines. Black : the head and the mesothorax 

 thinly covered with short fulvous pubescence, that on the cheeks, 

 thorax beneath, and on the metathorax, cinereous ; the anterior 

 margin of the clypeus and of the face on each side, and the man- 

 dibles, yellow. The margins of the prothorax, the tegulae, an 

 ovate spot on the scutellum, and the post-scutellum, yellow ; the 

 legs ferruginous, the coxae and trochanters black; the wings 

 hyaline, the nervures dark fuscous. Abdomen subpetiolate, 

 smooth and shining, with an ovate yellowish-white macula on 



