292 A. L. MELANDER. 



arched hack, distant frouj the third at the tip; penultimate section of the fifth 

 vein unusually short, not twice the length of the anterior cross-vein ; discal cell 

 small. Halteres black, with yellow peduncles. Abdomen thickly gray-poUinose, 

 the second and third segments wholly shining black. Front metatarsi dilated 

 and darker than the second to the fourth tarsal joints. 6 mm. 



Guerrero, Mexico (Smith). 



Empis pegasiis Osten Sacken. 

 Biol, t'ent. Am., Dipt. SuppL, p. 216. 



Female.— Black ; front moderately broad, opaque; face shining. Antennae 

 black: third joint not longer than the first, triangular, slightly excised on the 

 underside, the arista as long, or a little longer. Thorax black, with a trace of 

 three grayish stripes. Abdomen with the four basal segments ochraceous yellow, 

 opaque, shining on the incisures only; the last segments black, shining. Legs 

 dark brown or black ; femora, tibiie and tarsi beset with broad fringes of scale- 

 like hairs (on the anterior femora alone the fringes are replaced by hairs); the 

 four hinder femora and the tibise distinctly flattened. Wings with a uniform 

 brown tinge; the branch of the third vein slightly ol)lique. 7 mm. 

 Volcan de Cliirique, Piuianiii, Central America. 



Einpii^ xocliiti Wheeler et Melander ^Fig. 118). 

 Biol. Cent. \n\.. Dipt. .Suppl., Nov. 1901, p. 370. 



Femn/e.— Robust, dull, opaque-l)lack throughout, the only lighter portions being 

 the piceous proboscis, the base of the halteres and the subhyaline wings. Front 

 of uniform moderate breadth. First antennal joint short, second still shorter, 

 the third slightly longer than the other two together; arista forming a continu- 

 ation of the third joint, stout. Proboscis twice as long as the eye-height. Mar- 

 gin of the first abdominal segment fringed with black bristles, which are stronger 

 laterally. Legs not ciliated, though the longer hairs are serially arranged on the 

 underside of the femora and on the inner and outer sides of the tibife ; front 

 metatarsi slightly compressed. Wings almost hyaline; no stigmal spot ; anterior 

 branch of the third vein obliquely disposed ; anal vein attaining the margin. 4 

 to 5 mm. 



Guerrero, Mexico (Smith). 



Empis totipeiiiiiw l^ellardi. 

 Mem. d. Reale Accad. d. Scienze d. Torino, Ser. 2, vol. xxi, p. 199. 



FeimiZe.— Black cinereous. Antennae black. Proboscis equal to the head and 

 thorax together. Halteres black, paler towards the base. Legs black-brown ; 

 front femora more or less ciliated on the inside; middle and hind femora and all 

 the tibiie on the inner and outer sides with long, regular cilia; all the tarsi 

 tomentose and spinose, not ciliated. Wings wholly fuliginous, the duskiness 

 darker at the stigma ; first submarginal vein arcuate, subsinuose ; first posterior 

 vein not reaching the margin of the wing. 5 mm. . 



Morelia, Mexico (Saussure). 



Eiupis spiloptera Wiedemann. 

 Einpin spiloptera Wiedemann, Auss. Zw., ii, 5, 10. 

 Empis picta Loew, Cent, iii, 28. 



