438 INSECTA SAUNDERSIANA. 



Div. n. 



Structure of the wing-veins like that of Div. K. Meig. Dipt. i. 132, 

 pi. 5, f. 6, but the veinlet between the first externo-medial and the third 

 is hardly angular, and the veinlet between the third externo-medial and 

 the subaual joins the hind side of the discal areolet. 



LiMNOBIA CHRYSOPTERA, Foem. 



Atra ; anteimce setacece, non moniliformes, thorace multo hreviores ; alcB 

 lutecB, apice nigricantes. 



Deep black. Antennae setaceous, not moniliform, much shorter than 

 the thorax. Wings luteous, blackish towards the tips. Length of the 

 body 9 lines ; of the wings 14 lines. 



South America. 



Div. n. 



Mediastinal vein ending at about three-fourths of the length of the 

 wing, connected with the subcostal by a veinlet near its tip ; subcostal 

 ending at beyond five-sixths of the length ; radial springing from the 

 subcostal at a little before the lip of the mediastinal ; cubital springing 

 from the subcostal at a little before the base of the radial to which it is 

 parallel ; first externo-medial springing from the cubital, forming near 

 its base an almost right angle, forked at two-thirds of its length, joined 

 with the third externo-medial by two veiulets, and the angle formed by 

 the outer one of these two veinlets emits the second externo-medial vein, 

 and has its hind side very oblique and more than twice the length of its 

 fore side ; third externo-medial connected with the subanal by a trans- 

 verse veinlet, which is opposite the base of the discal areolet. 



