1913] North American Dipterous Genus Neurigona 37 



from Sea Cliff, and Ithaca, N. Y. ; Prof. C. W, Johnson''sent 

 specimens from Chester, Mass., taken August 4; Brookhne, 

 Mass., June 18; Hampton, N. H., July 10, taken by S. A. Shaw, 

 and from Lake Toxaway, N. C, taken by Mrs. Slosson; the 

 National Museum collection has a specimen taken at Mt. 

 Washington, N. H., by Mrs. Slosson. 



9 Neurigona floridula Wheeler. 



Figure 9. 

 Neurigona floridula Wheeler, Proc. Cal. Acad. Sci. ii, p. 72, 1899. 



Thorax and abdomen yellow; hypopygium with the first half yel- 

 low, last half black; front tarsi plain, with the fourth joint of front 

 tarsi less than one-half as long as third; wings tinged with yellow. 

 Length 5 mm. 



Male: Face rather wide for a male, white; palpi white; proboscis 

 yellow; front and occiput black, thickly covered with white pollen, 

 thinner on the center of the front; antennee yellow, third joint a little 

 infuscated, arista brown; frontal bristles black, orbital cilia and post- 

 vertical bristles whitish yellow. Mesonotum yellow, shining; pleurae 

 paler, opaque and with a coat of white pollen, with a black line in front 

 of the halters; metanotum and scutellum yellow, a little shining; outer 

 hairs of the scutellum small but distinct. Abdomen yellow, darker on 

 the third and fourth segments; third with a narrow dark band near the 

 posterior end, continued across the venter (sometimes this band is 

 indistinct) ; dorstim of the fourth segment with a poorly defined wide 

 blackish band; fifth light yellow; venter yellow with a transverse row 

 of long yellow hairs on the third segment; hairs on the second, third and 

 fourth segments mostly black, those on the first and fifth yellow, the 

 marginal row of bristles on the first segment black; hypopygium a short 

 oval in outline, compressed laterally, the basal part yellow, last part 

 black or testaceous, the yellow part nearly two-thirds of the whole. 

 Legs light yellow; front cox^ with short yellow hairs on the whole of 

 the front and with black bristles near the tip; middle coxs with black 

 hairs and bristles; front and middle metatarsi about the same length as 

 their tibise; fourth joint of front tarsi less than one-half as long as third; 

 second joint of hind tarsi distinctly longer than first; tegulas, their 

 cilia, and the halters light yellow. Wings hyahne, strongly tinged 

 with yellow in front of fourth vein, third and fourth veins con- 

 vergent, fourth vein ending in apex of the wing, not very close to the 

 tip of third; veins yellowish; anal angle obsolete. 



The following is a copy of Prof. Wheelers description of the female. 

 I give it in full for ths benefit of those who may wish to study the 

 synonymy of this species. 



"Female: Length 4>^-5>^ mm., length of wing 4I4 -5 mm. Proboscis 

 reddish yellow with pale hairs; palpi and face yellow, thickly covered 

 with silvery white dust, the latter of the usual width for a female, and 

 with the portion below the transverse suture receding; antennas yellow. 



