274 



bescent, curved downward; joints of nearly equal length. Antenna; 

 sixteen-jointed, porrect, simple, somewhat hairy, filiform, or nearly seti- 

 form ; first joint cylindrical ; second cyathiform ; the rest small and 

 oval. Thorax with a sinuated transverse suture. Wings incumbent, 

 parallel, rather long, of moderate breadth, very generally pubescent ; 

 mediastinal vein joining the costa at two-thirds of the length ; subcostal 

 ending at rather beyond three-fourths of the length ; radial and cubital 

 springing from a common petiole, which proceeds from the subcostal 

 before one-third of the length of the wing, exceeds them in length, 

 and is connected at its fork with the subcostal by a transverse veinlet ; 

 first externo-medial proceeding from the above petiole near its fork, 

 connected at an angle near its base with the third externo-medial by a 

 transverse veinlet ; the latter also forms an angle, whence proceeds the 

 second externo-medial, which is forked at about two-thirds of its length ; 

 another veinlet, opposite the above-mentioned, connects the third externo- 

 medial with the subanal. Halteres elongated. Abdomen with eight 

 segments, minutely pubescent, nearly cylindrical or nearly fusiform. Legs 

 long, slender, somewhat pubescent, unarmed ; the middle pair some- 

 what shorter than the others ; tibiae without spurs. Male. Tip of the 

 abdomen obtuse. Fern. Abdomen with two horny styles at the tip. 



The larvae live under the earth, and the flies inhabit shrubs and 

 woods, meadows, marshy places, and heaths. 



a. Wings with a discal areolet. 

 b. Wings spotted. Species 1. 

 b b. Wings not spotted. Species 2, 3. 

 a a. Wings with no discal areolet. 



b. Transverse veinlets in the disc of the wing nearly equally distant 

 from the base. 



c. Body yellow. Species 4, 5. 

 c c. Body grey or brown. 

 d. Antennae short. 



e. Stigma very distinct. Species 6. 

 e e. Stigma indistinct. Species 7, 8. 

 e e e. Stigma none. 



/. Thorax pale on each side. Species 9, 10. 

 //. Thorax not pale on each side.. Species 11. 

 d d. Antennae rather long. Species 12. 



b b. Hind transverse veinlet in the disc nearer to the base of the wing 

 than the fore one. 

 c. Body yellow. Species 13. 

 c c. Body dark. 



d. Wings moderately long. Species 14, 15. 

 d d. Wings shorter than the abdomen. Molophilus, Curt. 

 Species 16. 



1. maculata, Meig. Zw. i. 108. 1 (1818); Mcq.; Stseg. ; Eos.; 

 Xett. Cana, palpis nigris, antennis pedibusque testaceis, alia halteri- 



