1764 
DIPTERA OF AUSTRALIA. 
Veins — continued : 
Supernumerary cross-vein. r. 
3rd longitudinal ( v. long. 3a J. t, g. 
Middle cross- vein ( v. t'rans. media ), y, 
4tli longitudinal (v. long. 4a). x, li, k. 
Anterior branch ( v. long. 4a ramus anterior), h. 
Posterior cross-vein ( v. trans. posterior ). z. 
5th longitudinal ( v. long. 5a ). x, 1, m. 
Anterior branch ( v. long. 5a ramus anterior). 1. 
Incrassation of wing-fold, u, v. 
6th longitudinal ( v. long. 6a ). n. 
Cells. 
Costal ( c. costalis ). A. 
Sub-costal ( c. subcostalis). B. 
Marginal ( c. marginalis ). C. 
1st sub-mai’ginal (c, suhmarginalis Ima). D. 
2nd sub-marginal ( c. suhmarginalis 2da). E. 
1st posterior ( c. posterior Ima). F. 
2nd posterior (c. posterior 2da ). G. 
3rd posterior ( c. jiosterior 3a ). H. 
1st basal ( c. basalis Ima). I. 
2nd basal ( c. basalis 2da ). J. 
Anal ( c. analis ). K. 
Axillary ( c. axillai'is ). L. 
Spurious, M. 
