LIST OF DIPTERA. 103 



Cordyla, Meigen. 



Cordyla fasciata, Meig. Dipt. vi. 304. C. fulveola, Holiday, Ann. 



Nat. Hist. 1839, 183. 

 a. England. From Mr. Walker's collection. 



f. Lugubri. 



Zygoneura, Meigen. 



Zygoneura sciarina, Winthem, Meig. Dipt. vi. 305, 1, pi. 65, f. 15. 



Macq. Hist. Nat. Dipt. i. 158, 1. 

 a. England. From Mr. Walker's collection. 



Sciara, Fabricius. 



Div. A. Meig. Dipt. vi. 305. Macq. Hist. Nat. Dipt. i. 147. 



a. Poisers black or brown. 



Sciara praecipua, n. s., mas. Atra, antennis pedibusque nigris, alis 

 nigro-piceis. 



Body black : feelers and legs also black : wings dark piceous, 

 especially at the base and along the fore border, which is convex 

 from the base to beyond the middle ; veins of the fore border black ; 

 the rest piceous and more slender; poisers black. Length of the 

 body 3^ lines ; of the wings 9 lines. 



a. Brazil. Presented by Sir C. Stewart. 



Sciara cognata, n. s., mas. S. praecipuae coloribus sed alarum venis 

 structura divei'sa. 



Body black: feelers and legs also black: wings piceous, espe- 

 cially along the base of the fore border, which is convex, as in S. 

 prcecipua : fore border veins black; the rest piceous and slender; 

 the branches of the fork of the third longitudinal vein are less di- 

 verging from each other than in S. prcecipua, and the lower branch 

 is also more parallel to the fourth vein in the latter part of its 

 course ; poisers black. Length of the body 3 lines; of the wings 8 

 lines. 



a. Bogota. 



