36 HYMENOPTERA. 



with the base and apical portion more or less fuscous, the extreme 

 apex pale, the apical margins of the second, third, and fourth 

 segments fuscous ; a yellowish-white spot at the extreme lateral 

 margin of each segment. 



Hab. Australia. 



93. Thynnus (Agriomyia) mcestus. 



Male. Length 6-§ lines. — Black : the head and thorax closely 

 punctured, the legs red, the abdomen with a number of glaucous 

 spots. The anterior margin of the clypeus yellowish-white ; the 

 mandibles ferruginous, their apex bidentate. Thorax : the pro- 

 thorax with a narrow pale testaceous margin in front, the post- 

 scutellum pale testaceous ; wings fusco-hyaline, their nervures 

 dark ferruginous. Abdomen shining, and having a number of 

 transverse punctures, the apical portion of each segment smooth 

 and impunctate; the second, third, fourth, and fifth segments 

 with two central and one lateral irregularly- shaped glaucous 

 spots ; beneath, the second and two following segments with a 

 central transverse spot. 



Female. Length 4 lines. — Black : head and legs ferruginous ; 

 thorax punctured ; the basal segment of the abdomen punctured, 

 the second with four deep transverse grooves. 



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



94. Thynnus (Agriomyia) petiolatus. 



Male. Length 4f lines. — Black : the head and thorax covered 

 with strong confluent punctures ; antennae orange-red ; wings 

 hyaline, with their apical margins faintly clouded, the nervures 

 dark fuscous ; the intermediate and posterior tibiae serrated ex- 

 teriorly. Abdomen ovate, smooth and shining, the basal seg- 

 ment forming a short petiole at its base. 



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



95. Thynnus (Agriomyia) lucidus. 



Male. Length 4^ lines. — Jet-black and shining: the mandi- 

 bles and legs pale ferruginous ; the clypeus elevated, carinate in 

 the middle and bidentate at the apex. The head and thorax with 

 shallow punctures ; the metathorax smooth and shining, its trun- 

 cation rugose; the wings hyaline and iridescent, the nervures 

 ferruginous. Abdomen smooth and shining, very delicately 

 punctured, the margins of the segments slightly depressed. 



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



