xii SHORT ACCOUNT OF THE MORE IMPORTANT 
Family Orphnephilide. 
Ocelli absent: Head small, round; eyes round. Costal vein 
continued round the posterior border of wing. 
Family Psychodide. 
Ocelli absent. Body with long, coarse hairs. No transverse 
suture to thorax. Antenne long, 16-jointed. Wings very broad and 
hairy ; many longitudinal veins, only a few transverse veins ; no dis- 
coidal cells. Legs long, tibize without spurs. 
Family Culicide. 
Ocelli none. Thorax with no transverse suture. Head small. 
Antenne long, 15-jointed ; pectinate in g. Costal vein continued 
round margin of wing, fringed with scales ; veins in their last sub- 
divisions more than six in number. 
Family Dixide. 
Ocelli wanting. Head rounded. Antennz long, 12-jointed ; 
basal joint thick, flagellum slender. 
Family Zipulide. 
No ocelli. Thorax with V-shaped transverse suture. Antenne 
long, composed of 6 to 19 joints. Basal cells of wings reaching 
beyond the middle. Discal cell generally present. Legs long and 
slender. 
Family Rhyphide. 
Ocelli three. No transverse suture on thorax. Antenne as long 
as thorax; 16-jointed. Wings with a perfect discal cell, large and 
broad. Empodium like a pulvillus, pulvilli wanting. 
Family Stratiomyide. 
Head short, as broad as thorax. Third joint of antenne annu- 
lated ; furnished with a terminal bristle. Ocelli present. Three 
basal cells, much prolonged. Veins of two main trunks very crowded 
anteriorly. Costal vein reaching only to middle of wing. ‘Tibiz 
spurless. Empodium large, resembling pulvillus. 
Family Xylophagide. 
Head short and broad. Third joint of antennz annulated; no 
terminal bristle. Three basal cells, very prolonged. Third longi- 
tudinal: vein furcate; both intercalary veins present. Marginal 
vein encompassing the whole wing. Tibize with spurs. Empodium 
as above. 
