LIST OF DIPTEBA. 



Dacus, Fabr. 



Dacus Oleae, Meig. Dipt. v. 22, 1, pi. 56, /. 11, 13. Macq. Hist. 

 Nat. Dipt. 11, 451, 1. Rossi Faun. Etrusc. 2, 349, 1538. 

 Musca Oleae, Fabr. Ent. Syst. iv. 349, 152. Oscinis Oleae, 

 Fabr. Syst. Antl. 215, 3. Coq. Illust. pi. 24, f. 16. Latr. Gen. 

 Crust, iv. 351. Brachyopa Oleae, Meig. Syst. Beschr. iii. 264, 6. 



a. France. 



b. Italy. From Mr. Birch's collection. 



Group Senopterina, Macq. 



Dacus brevipes, Weid. Auss. Zweif. ii. 513, 1 . Senopterina brevipes, 



Macq. Hist. Nat. Dipt. ii. 454, 1. 

 a. ? 



Dacus bicolor, n. s., mas. et fem. Fulvus, capiteferrugineo, abdomine 

 cyaneo-purpureo basi fulvo, palpis ferrugineis, antennis pedibus- 

 que fulvis, a lis fulvis, apice fuscis, marginibus posticis cinereis. 



Head and chest tawny, beset with a few black bristles : head 

 ferruginous above and in front ; sides of the face without bristles ; 

 epistoma not prominent : eyes black ; fore part flat, its facets much 

 larger than those elsewhere : sucker pitchy, clothed with tawny 

 hairs ; palpi ferruginous, beset with black bristles: peristoma large ; 

 furrows of the face tinged with white ; feelers tawny, a little shorter 

 than the face ; third joint about twice the length of the second, ta- 

 pering from the base to the tip, which is conical ; bristle black, very 

 slender, tawny at the base, near which it has a few very short hairs, 

 about thrice the length of the third joint: chest clothed on each 

 side with some very short pale tawny hairs : abdomen bluish-purple, 

 spindle-shaped, tawny at the base, a little narrower and longer than 

 the chest : oviduct short, pitchy towards the tip : legs tawny, clothed 

 with very short pale yellow hairs ; feet darker towards the tips ; 

 claws black ; foot-cushions pale dull yellow ; thighs armed beneath 

 towards the lips with a double row of short black spines ; wings 

 tawny, gray along the hind borders; a large dark brown spot near 

 the tip of each fore border ; wing-ribs and veins tawny, the latter 

 pitchy in the brown parts of the wing; longitudinal veins nearly 

 straight, middle cross-vein straight, upright; lower cross-vein almost 

 straight, nearly upright, parted by less than thrice its length from 

 the middle cross-vein by much more than thrice its length from the 

 end of the fourth longitudinal vein, and by less than half its length 

 from the end of the fifth longitudinal vein ; poisers pale yellow, 



