HELOMYZID^E. 



325 



abdominal segments on each side in front widened, below 

 with bristly pseudopods. 



For Curtonotum, a genus with pectinate eosta, see Dro- 

 sophilidas. 



Fig. 131. Scoliocentra helvola, enlarged. 



TABLE OF GENERA. 



1. A humeral bristle present. .... 

 No humeral, no propleural bristle. . 



2. No bristle above base of front coxae (propleural). 

 A bristle above base of front coxae. . 



3. Spurs of middle tibiae curved (3 and fig. 131). 

 Spurs of middle tibiae not curved 4 



4. Face much retreating in profile, the anterior oral border oblit- 



erated; four dorsocentral bristles present (2). Anorostoma. 

 Face not conspicuously retreating. ...... 5 



Helomyza. 



Allophyla. 



3 



Scoliocentr a - 



