DIPTKUA ASILID.K. 565 



(wliicli is scarcely as long us the small transverse vein) with the upper api'-al 

 branch of the lil'tli Longitudinal vein just bevond its forking, or opposite the 

 ('(irking nl' i he third longitudinal vein : the lii'th longitudinal vein forks pre- 

 viously to this, emitting a branch barely before the point where the ante- 

 rior basal transverse vein strikes it, so that the branch almost appears tu he 

 a continuation of the transverse vein; and previous to this it has a distinct 

 angle, \\here another vein is thrown off at right angles, directly oppoMi>- 

 the upper extremity of the anterior basal transverse vein, and beyond tin- 

 origin ol the third longitudinal vein; the basal half only of the sixth longi- 

 tudinal vein can be seen, but its direction shows that it unites with the 

 lowest branch of the fifth at its apex, as in Dasypogon. All the cells 

 throughout the wing are exceedingly narrow. 



Length of wing, 6.75 mm ; probable breadth, 1.6 mm . 



Green. River, Wyoming. One specimen, No. 4143 (S. H. Scudden. 



STENOCINCLIS sp. 



PI. 10, Fig. 15. 



Certainly to this family, not improbably to this genus, and perhaps to 

 the single species described above, belongs the body of a fly figured on I'l. 

 10, Fig. If). It is a male. The thorax is very stout, naked, and devoid of 

 bristles. The femora stout, inflated, naked, and spineless; the tibia- not 

 one third so stout, cylindrical, hairy, and apparently spinous, riot so long 

 as the femora ; the tarsi densely hairy and spinous, the claws stout, strongly 

 curved. The thorax and abdomen, the former more distinctly, show a 

 microscopic longitudinal wavy carding of the integument, which is also 

 faintly seen mi the naked femora. 



Length of body, !.:>"""; of femora, 2"" ; breadth of latter, 0.7"" 11 . 



Green River, Wyoming. One specimen, No. 45 (Prof. L. A. Lee). 



^E Sp. 



A fly, apparently of this family, but in too imperfect a state- for any 

 reasonable identification at pres.-nt, was found by Dr. (J M l'.i\\-on three 

 miles up the Xorth Fork of the Similkameen River, British Columbia, and 

 numbered by him (i7 and <>8. 



