HEMERODROM1A. 143 



of the body cinereous, yellow, rarely black ; of the legs pale. Head 

 round. Eyes green, parted in both sexes by a very narrow front. 

 Ocelli 3, on the crown. Proboscis perpendicular, a little shorter than 

 the head. Labrum acute. Palpi subulate or cylindrical, bristly at 

 the tips. Labium cylindrical. Antennae 4-jointed, porrect, approxi- 

 mate at the base, diverging upwards ; first joint very small ; second 

 short, cylindrical ; third oval, somewhat pointed in front ; fourth seti- 

 form, very short. Thorax rather long, or almost cylindrical. Wings 

 long, with obtuse tips, very finely pubescent, incumbent and parallel 

 in repose. Cubital vein forked. Halteres uncovered. Abdomen cylin- 

 drical. Legs long, slender. Fore coxae as long as the femora ; fore 

 femora thick in most species, spinose beneath ; metatarsi as long as 

 the other 4 joints. 



Male. Tip of the abdomen obtuse, sometimes incrassated. 



Fern. Occasionally differing from the male in colour ; tip of the 

 abdomen acute. 



The Hemerodromia prey on minute Diptera, and inhabit the 

 leaves of shrubs, hedges, and grassy spots, and are most frequent 

 on the banks of rivers and of lakes ; all their movements are slow. 

 The genus may be thus divided : 



a. A discal areolet ; prsebrachial areolet longer than the pobrachial. 



b. Stigma black. Species 1, 2. 



b b. No stigma. Species 3. 



a a. No discal areolet ; pobrachial areolet longer than the praebrachial. 

 Species 4-6. 



1. praecatoria, Fin. d. s. emp. 10. 12 (1815); Ztt. monostigma, 

 Mg. ; Mq. ; Steph. ill.! pi. 45. f. 3. Cinerea, anteunis nigris basi 

 flavis, alis hmpidis, halteribus pedibusque flavis. Long. 2-2 ; alar. 

 3|-4ilin. 



Grey. Proboscis yellow, with a black tip. Antennae black, yellow 

 towards the base. Wings colourless ; stigma black ; veins black, yellow 

 at the base. Halteres yellow. Legs yellow ; tips of the tarsi brown. 

 Fern. Abdomen tawny beneath, sometimes also above with a row of 

 grey spots along each side. 



Generally distributed. (E. S. I.) 



2. monostigma, Hms.; Ztt. d. s.i. 267.8 (1842). Fulva, capite 

 albo, antennis flavis, thorace cinereo-bivittato, pectore albo, alis Hmpidis, 

 stigmate nigro, halteribus pedibusque flavis, abdomine maculis nigris 

 vittato. Long. 1^; alar. 3 hn. 



Smaller, paler, and more slender i\LQnH.pr<scatoria. Tawny. Head 

 white. Eyes red. Proboscis yellow, with a black tip. Antenna? 

 yellow. Thorax with 2 grey stripes-, underside tinged with white. 

 Wings colourless ; stigma black ; veins brown, yellow towards the base. 



