South African Higher Myodarii (Diptera Calyptraiae). 497 



transverse sinuous, moderately distant from the above-mentioned 

 cubitus. Squamae whitish ; halteres yellowish, club fuscous. Legs 

 black ; tibiae often brownish-red. 



Length 12 mm. 



Cape Colony, Springbokfouteiu (E. M. Lightfoot), S. Afric. Museum. 



TKIXOCLEA, u. gen. 

 Fig. 5. 



This genus is founded for a species with a bright violaceous metallic 

 tinge belonging to the section Trixa B. B. The head is that of a 





FIG. 5. $. 



Trixa Meig. with the eyes bare and a little distant ; the short palps 

 and the general facies recall Fortisia B. B. and Loewia Egg. ; the wing- 

 is that oi'Zeuxia Meig., having the 1st posterior cell with a long petiole, 

 and the 4th nervure prolonged beyond the cubitus. Geuae with an 

 oblique row of small rigid setae, at the ba,ck of which are numerous 

 ciliae disposed on two irregular rows ; the frontal setae descend as far 

 as the half of the 2nd auteuual joint. Thorax with two pairs only of 

 acrostical setae in front of the suture, the hind pair is wanting ; 

 4 descending setae; steruopleural = 2 + 1- Scutellum with 5 long 

 marginal setae, the apical of which are crossed. Abdomen with 

 segment 1 bare, the excavation limited by a border behind ; segment;; 



