40 PROCEEDINGS OF THE NATIONAL MUSEUM vol. GG 



which are fringed with yellow hairs, a pair of curved hornlike 

 organs and a pair of flattened appendages, which are obliquely trun- 

 cate at tip, ending in a small bristle. 



All coxae, femora, fore and middle tibiae pale yellow; hairs of 

 fore coxae yellow, one or two of their bristles black ; hairs and bristles 

 of middle and hind coxae black. Hind femora slightly darkened at 

 tip and with the lower hairs on outer side near the tip longer. Fore 

 and middle femora fringed on lower surface with delicate yellow 

 hairs, which are scarcely as long as the width of the femora, the 

 middle pair with one small preapical bristle and about five delicate 

 black hairs on posterior side at tip ; bristles of the tibiae small. Hind 

 tibiae brownish-yellow, not darker at tip. Fore and middle tarsi 

 yellow, darker apically; joints of fore tarsi are as 47-18-10-6-6; 

 those of middle tarsi as 58-22-18-10-9. Hind tarsi wholly black 

 with the first and second joints as 37-33. Calypters and halteres 

 pale yellow, the former with a black tip and long pale cilia. 



Wings grayish, tinged with yellowish-brown; third vein slightly 

 bent backward at tip; last section of fourth vein a little bent just 

 before its middle, parallel with third at tip; last section of fifth 

 vein scarcely twice as long as the crossvein. 



Described from one male taken by C. W. Johnson, at Daytona, 

 Florida, April 8, 1917. Type in the collection of C. W. Johnson. 



36. ARGYRA (LEUCOSTOLA) INAEQUALIS. new species 



Mah. — Length, 3 mm. Face narrow, silvery white. Palpi yellow 

 with white pollen. Front nearly opaque with white pollen. An- 

 tennae black; first joint bare above; third joint longer than the 

 basal two taken together, sometimes twice as long as wide, obtuse at 

 tip; arista inserted above the point, scarcely as long as the antenna. 

 Lower orbital cilia white, inconspicuous. 



Dorsum of thorax shining green with white pollen on the anterior 

 portion; scutellum with one pair of large marginal bristles: pleurae 

 dull green with white pollen. Abdomen shining green, venter, pos- 

 terior edge of first segment at the sides, all of second segment^ 

 except a median stripe, which is widened at anterior and posterior 

 margins, and a spot on each side of third segment, yellow; hairs on 

 the green portion black, those on the yellow part mostly yellowish. 

 Hypopygium (fig. 30) black or greenish; its appendages mostly 

 yellowish; outer lamellae elongate, triangular, with delicate hairs 

 on the edges and one long one at tip. 



All coxae and their hairs and bristles yellow, middle and hind 

 pairs a little infuscated at base on outer surface. All femora and 

 tibiae together with their hairs, yellow; tips of posterior femora 

 brown above; all femora with delicate yellow hairs below, which 



