178 DIPTEROUS GENUS DIAPHORUS 



of the femora, tibiae and tarsi yellow, the latter slightly brownish 

 towards their tips; pulvilli of all tarsi distinctly enlarged; fore 

 femora with the usual row of hairs on the lower hind edge ; 

 middle and hind femora with a few bristle-like hairs near the 

 tip. Halters yellow ; tegulae and their cilia white. Wings gray- 

 ish hyaline, slightly tinged with brown along the veins ; first 

 vein reaching about one third the distance to the tip of the sec- 

 ond vein. 



Female : Four females taken with the male described above 

 have the face black with white pollen ; front with thick gray pol- 

 len. Thorax dull green with thick gray pollen and a trace of the 

 coppery vitta. Abdomen dark green with gray pollen ; femora 

 almost black. Tegulae and their cilia white ; wings hyaline 

 slightly tinged with grayish ; third vein reaching more than one- 

 third of the distance to the tip of the second ; costa rather stout 

 beyond the tip of the first vein. 



Described from one male and four females taken at Gualan, 

 Guatemala, Feb. 15th. Type in the collection of Prof. J. S. Hine. 



The following combination of characters serve to separate 

 this species. Tegulae and their cilia pale, antennae of moderate 

 size with the third joint rounded at tip, face green with yellow 

 pollen, tir.st vein one-third as long as second. 



19 Diaphorus leucostomos Loew. 



Diaphonis leucostoma Loew, Xeue Beitr., viii, p. 58 ; N. 

 A. Diptera, ii, p. 166. 



Male : Length 2.5-3 mm. Eyes widely separated by the 

 front ; antennae black, third joint large and with a rather long 

 point (Fig. 9) ; arista inserted before the tip of this point. 

 Thorax and abdomen bright green, the former with thin grayish 

 dust ; bristles at the tip of the abdomen rather long. Coxae 

 black ; femora green ; tibiae, tips of femora and tarsi yellow, 

 tarsi inf uscated towards the tips ; pulvilli of all tarsi enlarged. 

 Tegulae, their cilia and the halters yellow. Wings hyaline 

 slightly tinged with gray. 



I have seen specimens from Canada, N. Y., N. J., Md., 

 D. G, Ga., La., Ohio, Mich., Mo., and Guatemala. Prof. John- 

 son reports it from Fla. 



