58 Annals Entomological Society of America [Vol. VI, 



30 Neurigona australis n. sp. 



Figure 31. 



Dorsum of tha thorax grayish green; abdomen with the dorsum 

 entirely blackish; hypopygium shining black, large; front tarsi with the 

 last two joints flattened and fringed with black hairs, forming an oval 

 tip to the tarsi; front tibiee shorter than their tarsi. Length of male and 

 female 4J^ mm. 



Male: Face narrow, silvery white; palpi and proboscis yellow; front 

 and occiput black, with grayish white pollen, the latter with purple 

 reflections; orbital cilia white except a few of the uppermost which are 

 black; antenna yellow, third joint and arista brownish. Dorsum of the 

 thorax grayish green, with some purple reflections, and grayish pollen- 

 ose, with four brown vittse, the lateral ones rather poorly defined; 

 pleurse and metanotum black, and covered with white pollen; a small 

 yellowish spot below the humeri; scutellum the same color as the dor- 

 sum. Abdomen metallic black and covered with grayish pollen, which 

 is thickest on the sides; fifth segment glabrous and shining; venter 

 sordid yellow; hairs of the abdomen mostly pale, rather scattering, but 

 longer and more abundant on the sides and posterior end; hypopygium 

 shining black, large, polished, rounded behind, and with black append- 

 ages. Legs yellow; middle and hind coxae blackened almost to the tip; 

 front and middle coxte with white hairs and bristles; front tibiae and 

 tarsi darker than their femora the tibiae a little longer than their femora, 

 and the tarsi nearly one and one-third times as long as the tibiae, the 

 last four joints flattened, fourth and fifth joints black and fringed on 

 each side, fomimg an oval tip to the tarsi; front metatarsi nearly as 

 long as the remaining four joints together; middle metatarsi about the 

 same length as their tibise; a few weak yellow bristles on the lower side 

 of the middle femora near the base ; hind tarsi about the same length as 

 their tibiae, and the first joint longer than the second; last four joints 

 of the middle and hind tarsi darkened. Halters, tegulae, and their cilia 

 yellowish. Wings hyaline, only slightly tinged with grayish; anal angle 

 not prominent; fourth vein sharply bent towards the third, ending in 

 the apex of the wing, not very near the tip of the third vein. 



Female: Differs from the male as follows: the abdomen is lighter 

 colored, more like the dorsum of the thorax; the front tarsi are plane; 

 the middle femora without bristles below; and the first and second 

 joints of the hind tarsi nearly equal. 



Described from one male, and five females from New 

 Mexico. The male and one female are in the collection of the 

 American Entomological Society, and were taken at Cloud- 

 croft, N. M., June 18, 1902; in the National Museum collection 

 are three females, taken at Las Vegas, N. M., Aug. 7, 8, and 11, 

 by S. H. Baker; and one female taken on the White Mountains, 

 N. M., Aug. 5th, by Townsend, at 6500 feet altitude. Type in 

 the collection of the American Entomological Society; type 

 No. 5256. 



