BUFFALO SOCIETY OF NATURAL SCIENCES 169 



3 Diaphorus dimidiatus Aid. 



Diaphorus dimidiatus Aid., Trans. Ent. Soc. London, 1896, 

 pt. iii, p. 322. 



Male : Length 2 mm. Eyes separated by the front ; anten- 

 nae black, the third joint very short ; arista dorsal. Thorax light 

 green, bluish, white dusted. Abdomen with second and third 

 segments yellow; apical segments green, a little coppery; four 

 apical bristles large. Fore coxae black with a row of three 

 long black bristles ; middle coxae black with yellow tips ; hind 

 coxae yellowish brown : femora, tibiae and tarsi yellow ; tarsi 

 infuscated at tips ; fore pulvilli as long as the third joint of fore 

 tarsi, middle pulvilli nearly as large as those of the fore tarsi. 

 Halters and tegulae yellow, the latter with black cilia. Wings 

 subhyaline. 



W. I. 



4 Diaphorus antennatus n. sp. 



Female : Length 4 mm. Face wide, thickly covered with 

 silvery white pollen which is more abundant below the suture ; 

 papli yellowish with white pollen and coarse black hairs ; pro- 

 boscis black ; antennae with the first joint yellow, second and 

 third black, third joint short, rounded, flattened in outline at the 

 tip ; arista apical, black, as long as the height of the eye ; front 

 green covered with yellowish gray pollen. Thorax green, dor- 

 sum thickly covered with yellowish pollen ; pleurae with white 

 pollen ; scutellum blue-green. Abdomen green, in one speci- 

 men with golden reflections, in the other blue-green ; venter, 

 sides of the second and third, and a band at the base of the 

 second segment above yellow ; the bristles on the hind margins 

 of the segments large and conspicuous. Legs and fore coxae 

 yellow ; tarsi becoming dark brown from the tip of the second 

 joint ; middle and hind coxae black with yellow tips and a large 

 bristle on the outer surface ; fore coxae with thin silvery pollen 

 and minute pale hairs on the front surface and with black 

 bristles at tip ; middle and hind trochanters with a black bristle 

 above ; fore tibiae with a prominent bristle near the base on the 

 upper side ; middle tibiae with a long stout bristle near the base 

 on the front side, and also several minute bristles ; hind tibiae 

 with two bristles at basal fourth, two beyond the middle above 



