DOLICHOPODID^. 



36. Face of female wide, the lower part projecting roof like (a). 



Syntormon. 

 Face of female not so constructed (22, 39, a) . Parasyntormon. 



37. Eyes of male contiguous or nearly so below the antennae. 38 

 Eyes of male contiguous or nearly so above the antennae (5, a, b, 



c) Diaphorus, in part. 



Eyes closest together at the level of the antennas, middle legs of 



male distorted or with peculiar structure (c, d) . 



Campsicnemus. 

 Eyes of male not contiguous nor closely approximated. . 41 



38. Abdomen of male with five visible segments besides the nearly 



concealed hypopygium (a, b, d). . Chrysotus, in part. 

 Abdomen of male with six visible segments besides the hypopy- 

 gium. . 39 



39. First joint of fore tarsiis in the male much shorter than the second 



(13, 36, a, c) Nothosympycnus. 



First joint of fore tarsus of male longer than the second. . 40 



40. Second longitudinal vein in the male strikingly sinuous. 



Eutarsus. 

 Second vein almost straight (a) . . . . Sympycnus. 



41. Thorax bright green, abdomen yellow, with a good deal of silvery 



pollen (a) . Leucostola. 



Not so marked. ......... 42 



42. Face broad, the palpi large, reposing on the proboscis; pollinose 



species (d, i) Thinophilus. 



Palpi of ordinary size or else projecting lamelliform, free from the 

 proboscis 43 



43. Third joint of antenna elongated in both sexes; in the male awl- 



shaped, not nmch wider at base than the first joint (28) . 



Rhaphium. 

 Third joint elongated only in the male, lancet-shaped, much wider 



at base than the first joint (29, a). . . Porphyrops. 

 Third joint short, the tip sometimes drawn out into a point. 44 



44. Abdomen of male with four blunt bristles at the tip (5, a, b, c) . 



Diaphorus, in part. 

 Abdomen destitute of these bristles. ..... 45 



45. Arista nearly or quite apical (a, b, d) . Chrysotus, in part. 

 Arista dorsal (d) Teuchophorus. 



