350 A. L. MELANDER. 



simple, legs slender, a row of scattered hairs along the under edge of the femora, 

 claws and pulvilli large, empodium minute. Halteres black. Wings large, cin- 

 ereous hyaline, veins fuscous, a diffused brown stigmal spot present, discal cell 

 as long as the second basal, its hind border about three-fourths as long at the 

 outer continuation of that vein. 



A single specimen from Los Angeles Co., California, December 

 22, 1896. (W. M. Wheeler). 



Page 259. MEGACYTTARUS Bigot. 



Although Mr. Coquillett claims that the mutilated specimen upon 

 which this genus was founded is the same as Rhamphomyia limbata 

 Loew, the suppression of the genus seems hardly justifiable on the 

 slight evidence he gives. Tt is true the diagnosis applies equally well 

 to Rh. limbata, but Megacyttarus is grouped by M. Bigot with 

 Ocydromia which has a projecting proboscis and a truncate anal 

 cell, characters of importance which M. Bigot would hardly over- 

 look. Hence until more definite information is to be had concern 

 ing the type the genus and species may be reinstated. 



" Allied to Ocydromia. It differs in the short basal cells and the 

 very long, broad, roughly triangular discal cell which is closed by a 

 greatly sinuous transverse vein placed near the hind margin of the 

 wing." 



megacyttarus argeiitens Bigot. 

 Bull. Soc. Ent. France, 1880, xlvii. 



Female. Length 5 mm. — Cinereous, the four vittse of the thorax, the probos- 

 cis, the whole of the legs, the extreme tip of the abdomen, and the small stigmal 

 spot of the wings black ; abdomen silvery ; wings hyaline. 



Colorado. 



Page 264. Hilara umbrosa. 



This is the species given in the New Jersey " List " as Empis 

 hrachystoma Coquillett MSS. 



Page 285. Modify table of EMPIS as follows: 



21. Pile of pleurse and of abdomen in part pale, or wanting 22. 



Hairs of bristles of thorax and abdomen wholly black 31. 



22. Species of three mm., size ; antennae reddish at base 23 



Larger species 24. 



23. Abdomen more or less yellow ; veins brown compta Coquillett. 



Abdomen wholly black ; veins white varipes Loew. 



24. Knob of halteres black ; abdomen largely shining 25. 



Knob of halteres yellow ; abdomen opaque pollinose 26. 



25. Mesonotal hairs white COlliailtis Coquillett. 



Mesonotal hairs black brachysoiua Coquillett. 



