206 PROCEEDINGS OF THE ACADEMY OF 



the upper one ; it is arcuated, before joining the subcostal vein, whereas the 

 upper one (joining the costal vein,) is short, straight and perpendicular : 

 length 4 5 lines, i Section 5th.) L. immatura nob. 



One pale ring on the femora ; both branches of the fork, formed by the 

 mediastinal cross-vein with the tip of the mediastinal vein, are of about 

 the same length ; length 5 6 lines. (Section 5th.) L. cinctipes nob. 



11. Thorax with three brown stripes, the intermediate one capillary; wings 

 clouded with brown along the central cross-veins and some of the longitu- 

 dinal veins ; length 4 lines. (Section 5th.) L. indigena nob. 



Thorax with one brown stripe on its anterior p*rt ; wings yellowish, with 

 four more or less distinct brown dots along the anterior margin ; length 

 4 4| lines. (Section 5th.) L. tristigma nob. 



12. Thorax black, shining, pleurae with a silvery reflection ; wings infuscated, 

 stigma brown : length 3 lines. (Section 3d.) L. morio Fab. 



Thorax cinereous, with three brown stripes ; wings hyaline, stigma infus- 

 cated along the cross-vein only, the rest of its surface being paler ; length 

 2 3J lines. (Section 3d.) L. liberta nob. 



Thorax ochraceous or brown, with or without stripes, 13 



13. Whole antennae black or brown ; body brown, with more or les3 ochraceous 



on the thorax, 18 



Antennas, or at least their basal joints, pale, 14 



14. Discoidal areolet extant, 15 

 No discoidal areolet ; mediastinal cross- vein removed from the tip of the 



mediastinal vein at a distance about equal to the length of the stigma, 17 



15. Feet yellow, with two brown rings ; tip of the mediastinal vein with a brown 



cloud, L. tristigma nob. 



(See above, No. 11.) 

 Feet yellow, without brown rings ; tip of the mediastinal vein without 



cloud, 16 



16. Ochraceous; abdomen, stigma and knob of halteres infuscated; veins of 

 the wings brown ; mediastinal cross-vein at a distance from the tip of the 

 mediastinal vein about equal to the length of the stigma; length 2 2 

 lines. (Section 3d.) - L. diversa nob. 



The whole body, including the veins of the wings, pale ochraceous ; medias- 

 tinal cross-vein at some distance from the tip of the mediastinal vein, but 

 nearer than the length of the stigma ; length 3 3| lines. (Section 3d.) 



L. pudica nob. 



17. Ochraceous; thorax with a brown stripe in the middle ; feet tawny ; length 

 2 3 lines. (Section 3d.) L. immodesta nob. 



Brownish ochraceous ; thorax with three brown stripes ; feet brown; femora 

 with a pale ring before the tip ; length 2^ 3 lines. (Section 3d.) 



L. gladiator nob. 



18. Mediastinal cross-vein near the tip of the mediastinal vein, (the interval 



between them is much shorter than the length of the stigma,) 19 



Mediastinal cross-vein removed from the tip of the mediastinal vein at a 

 distance about equal to the length of the stigma ; length 2^ 3 lines. (Sec- 

 tion 3d.) L. distans nob. 



19. The mediastinal vein joins the costal at some distance beyond the origin of 

 the petiole, (this distance being almost equal to the length of the stigma) : 

 tip of the wing finely pubescent; length 3 3 lines. (Section 3d.) 



L. pubipennls nob. 



The mediastinal vein joins the costal nearly opposite the origin of the petiole ; 



tip of the wing naked ; length 2\ 3 lines. (Section 3d.) L. stulta nob. 



1st Section. 



Geranomyia Halid. 



Proboscis slender, longer than the head, prolonged in a haustellum, which 



[Au 



g- 



