HYMENOPTERA. 55 



tured ; the clypeus with the centre of its anterior margin tes- 

 taceous ; the mandibles ferruginous at their apex ; the sides of 

 the head and the mandibles with a long fringe of white pubes- 

 cence ; the face pubescent ; a sharp tooth on the cheeks at the 

 base of the mandibles. The thorax with white pubescence ; the 

 wings fulvo-hyaline, with a fuscous cloud at the apex of the 

 marginal cell ; the legs ferruginous, with the coxae and base of 

 the femora black. Abdomen : the apical ventral segment rounded, 

 and having an acute spine in the middle. 



Hab. Australia (Hunter River). 



8. iELURUS BASALis. Plate III. fig. 6 <? . B.M. 



Male. Length 6 lines. — Black and punctured : the clypeus 

 with a central smooth shining carina, the anterior margin shining 

 and truncate ; the mandibles ferruginous towards their apex, 

 the tips black ; the cheeks produced into a stout spine at the 

 base of the mandibles, with a long fringe of pale pubescence. 

 Thorax : the posterior margin of the ])rothorax rufo-testaceous ; 

 the wings hyaline, the nervures dark fuscous, the tegulae ferrugi- 

 nous ; the legs ferruginous, with the coxse and base of the 

 femora black. Abdomen subpetiolate, delicately and distantlv 

 punctured ; the basal segment closely punctured, with a central 

 longitudinal impressed line, its apical margin, the second segment, 

 and the sides of the third ferruginous ; the apical ventral seg- 

 ment with a short spine at the apex, emanating from an angular 

 process, which has a minute tooth at its base. 



Hab. Australia. 



9. iELURUS COMBUSTU.S. B.M. 



Male. Length 6i lines. — Black and punctured : the margin 

 of the tubercles above the insertion of the antennae, the clypeus 

 anterior^, and the margins of the face on each side rufo-testa- 

 ceous ; the mandibles ferruginous, with their inner margin testa- 

 ceous ; the face with long glittering pale pubescence ; the man- 

 dibles and lateral margins of the head with a long fringe of pale 

 pubescence ; a spine on the cheeks at the base of the mandibles. 

 Thorax : the anterior margin of the prothorax pale testaceous, 

 the posterior margin rufo-testaceous ; wings hyaline, their ner- 

 vures dark fuscous, becoming ferruginous towards their base, the 

 tegulae ferruginous. Abdomen black above, with the sides and 

 beneath ferruginous ; the apical margins of the segments narrowly 

 ferruginous ; the apical ventral segment rounded, with a slender 

 acute spine in the middle. 



Hab. Australia (Moreton Bay). 



