640 LIST OF DIPTERA. 



73. Erax pumiltjs. 



Cinereus ; caput albo pilosum ; mystax albidus, setis paucis supra 

 nigris ; thorax nigra trivittatus ; abdomen supra nigrum, 

 maculis lateralibus trigonis canis ; tibia intus basi fulvce ; 

 alee subhyalince. 



Cinereous. Head white and clothed with white hairs behind and 

 beneath. Mystax with many whitish bristles, above which are a few 

 black bristles. Thorax with three blackish stripes, the lateral pair 

 interrupted. Abdomen black above ; hind borders of the segments 

 with triangular white spots. on each side. Tibia? tawny towards the 

 base on the inner side. Wings nearly limpid. Male. — Abdomen 

 almost twice the length of the thorax ; two subapical segments 

 silvery white. Sexualia of moderate size. Fern. — Stylate part of 

 the abdomen shining. Length of the body 6 lines ; of the wings 10 

 lines. 



a, b. Vera Cruz. From M. Salle's collection. 



74. Eeax Sicvon. 

 Asiius Sicyon, Cat. of Diptera, Pt. 2, 399. 

 Brazil. 



75. Erax Stimicon. 

 Erax Stimicon, Diptera Saundersiana, Pt. 2, 129. 

 Colombia. 



Africa. 



A. Abdomen vittatum. - algirus, Linn. 



B. Abdomen non vittatum. - femoralis, Wied. 



76. Erax? algirus. 



Rubidus ; antennae fulvce ; mystax albus ; thorax vittis saturatio- 

 ribus ; abdomen fuscanum, vittis tribus obsoletis nigellis ; 

 pedes badii, pilis setisque albis ; alee limpidce. 



Asiius algirus, Linn. Syst. Nat. 2, 1006,2. Fabr. Ent.Syst.iir. 

 376,3; Syst. Anil. 153, 3. Wied. Dipt. Exot. i. 196, 27; 

 Auss. Zweifl. i. 46J, 55. 



Algeria. 



