252 



THE DIPTERA-DRACHYCERA OF TASMANIA, 



probably arisen as to its place of origin. The species is 

 described as green ; scutelliun violet ; wings hyaline. 

 Length, male, 8 mm. In Macqnarfs figure the posterior 

 cross- vein is given as gently waved. 



61. A E A c H N o M Y I A. Gen. nov. (Fig. 50). 



Acrostichal bristles biserial ; antennae situated very high, 

 with the arista dorsal ; palpi large and conspicuous ; eyes 

 in the male joined at a short distance below the antennse; 

 abdomen long and slender; hypopygium largo, but not 

 recurved beneath the venter^ legs very long, extremely 

 slender, and practically bare ; wings with the discal vein 

 simple, but with a slight upward curve before reaching the 

 margin. 



Wino- of Avar lino //it/ in arbcnnn. 



Head a little broader than the thorax ; the lower part of 

 occiput bearing dense hairs. Proboscis thick and fleshy. 

 Palpi large and conspicuous, rounded, with a short terminal 

 bristle. Eyes in male joined for a very short distnnce at 

 a point one-third the length of the face below the antennse. 

 Antenuce situated very high, the length, without the arista, 

 about half that of the head, the first and second joints 

 short and broad, the third narrowed apically, with the 

 arista springing almost from its base. Thorax with two 

 median rows of acrostichal bristles, and, on each side, one 

 row of longer dorsocentral and humeral, post humeral, 

 notopleural, supraalar, and postalar bristles ; scutellum 

 with two long marginal bristles. Abdomen long, slender, 

 and bare; hypopygium large, but not recurved beneath the 

 venter. Legs very long and spidery, the middle pair the 

 longest, the tarsi longer than the tibire, the whole bare 

 both of pubescence and of bristles, except for one bristle 

 situated about the middle of the posterior tibiae. Wings 

 with the normal venation of the family, the discal vein 

 with a short u^oward curve before rearhing the wing- 

 margin. 



This genus is easily distinguished from all the other Tas- 

 manian genera of Dolicliopodiclcc by the veiy long spidery 

 legs. Only one species is at present known. 



