BY ARTHUR WHITE. 75 



Table of the Australian Species of Metoponia. 



1 . Thorax and abdomen black ; legs black rubriceps Macq. 



2. Thorax and abdomen testaceous ; legs red australis Macq. 



Metoponia rubricrps Macq. 



Described by Macquart as having the head red, thorax dull 

 black; abdomen shining black; legs black. Length, J, 6 mm. 

 Hab. — " Tasmania." 



Metoponia australis Macq. 



Syn., Xenomorpha australis Macq. 



Described by Macquart as having the thorax and abdomen 

 testaceous, the former, in the male, with a curved, black stripe 

 on each side; antennae and legs red; posterior tibise bowed in 

 the male. Length, ^(^, 7-8 mm. 



.ffa6. — "Australia." 



3. Xanthoberis, gen.nov. (Fig. 2). 



Antennae thrice the length of the head, first two joints short, 

 and of almost equal length, third about four times the length of 

 the first and second together, consisting of four segments of 

 almost equal length, and a shorter style; scutellum with four, 

 marginal spines; abdomen long and slender, with the posterior 

 femora slightly swollen; neuration of wings as in Neoexaireta. 



Fig. 2. — Head of Xanthoberis siliacea, ? . 

 Head short, and not produced. Eyes(9) bare and separated. 

 Antennae set close together, and situated about the middle of 

 the head in profile, about thrice the length of the head, first two 

 joints short, and of almost equal length, third about four times 

 the length of the first and second together, consisting of four 



