BY ARTHUR WHITE. 73 



3. AnteiuKL' thrice the length of the head Xanthobkris, gen.nov. 



Antennse about the same lengtli as the head 4. 



4. Eyes hairy; thorax metallic; wings not banded Actina Meig. 



Eyes bare; thorax not metallic; wings banded. ..Neoexaireta Ost.-Sack. 



Of the above genera, Metoponia is unknown to me; Kertesz 

 places the species named by Macquart, Xenomorpha australis, in 

 this genus: if this is correct, its position should be that given 

 above. 



1. C R Y p T o B K R I s, gen.nov. (Fig.l). 



Non-metallic flies; scutellum without spines; eyes bare, joined 

 in the male; antennae a little longer than the head, third joint 

 annulated, but without any style or arista; discal cell of wings 

 almost pentagonal, with three, issuing veinlets; cubital vein 

 f(}rked. 



Fig. 1 — Wing of Cryptoheris hebescens. 



Head short and not produced. Eyes bare, joined in the male. 

 Antennae set close together, situated towards the lower part of 

 the head in profile, a little longer than the head; first joint about 

 twice the length of the second, the third slightly swollen and 

 annulated, nearly twice the length of the first two joints together. 

 Thorax with small shoulder-tubercles; scutellum without spines. 

 Abdomen long and slender, with seven, visible segments. The 

 thorax, scutellum, and abdomen covered with short, depressed 

 pubescence. Legs simple, slender. Wings without any distinct 

 stigma; costal margin minutely bristly, cubital vein forked; 

 discal cell almost pentagonal, with three, issuing veinlets (pos- 

 terior veins); anal cell closed at some distance above the wing- 

 margin. 



This genus seems to be most nearly allied to the North Amer- 

 ican genus Chiromyza, from which it is distinguished by tha 



