84 GENUS XIPHANDRIUM IN NORTH AMERICA 



Described from one male taken at Oak Creek Canyon, Arizona, 

 in August, at G,000 ft. elevation, by F. H. Snow. Type in the 

 author's collection. 



Xiphandrium flavicoxa new species 



d^: Length, 2 nun. Face very narrow below, wider above, silvery- wliite. 

 Front shining violet. Antennae black; third joint scarcely as long as the 

 height of the head and not much wider at base than the width of the front; 

 arista about as long as the width of the front. The orbital cilia seem to be 

 wholly black (I can only see two or three of the lower ones). 



Thorax greenish. Abdomen green with bronze reflections. Hj-popygium 

 black with four black hairs above, its lamellae small, triangular with a stem, 

 yellowish at base, apical half black, fringed with minute jiale hairs; I cannot 

 see any inner a]jpendages. 



Coxae yellow; anterior and middle ones with yellow hairs on the front sur- 

 fac(>, the latter with a short yellow spine at tip and two or three black bristles 

 on outer surface near the tip; hind coxae with one black bristle. Femora 

 yellow, nearly bare below; middle ones with one small black bristle on each 

 side near tip : hind pair With one preapical bristle ; fore and middle tibiae yellow, 

 the former with minute bristles and the latter with large ones. Hind tibiae 

 brownish. Fore and middle tarsi a little longer than their tibiae, first joint as 

 long as the following three joints taken together, yellow, becoming darker 

 from the tip of the first joint. Hind tarsi black, with the second joint a littl(» 

 longer than the first. Calypters, their cilia and the halteres, yellow. 



Wings tinged with yellowish brown; fourth vein nearly paiallel with third 

 from near the cross-vein, ending in the apex of the wing; last section of fifth 

 vein about three times as long as the cross-vein; sixth vein short, i)ar;illel 

 v\ith the margin of the wing. 



Described from one male; taken at Lavender, Floyd County, 

 Georgia, August, 1910, by J. C. Bradley. Type in the author's 

 collection. 



Xiphandrium femineum new species (Text-fig. T).) 



(f : Length, 2.0 mm. face wide, nearly as wide as usual in the female sex, a 

 little narrowed below, silvery white. Palpi largely yellow. Front bright 

 blue-green. Antennae black; th'rd joint .•il>iiiit as long as the height of the 

 head, rather narrow and of about ('(|ii;il width to nc;ir its tip; arista about as 

 long as the width of the face. Lateral and inferior orbital cilia and beard 

 wliite. 



Tlioiax greenish, dorsum dulled with l)ro\vnish pnlien; scutcliuni blue-green; 

 posterior edge of the i)leura yellow. Abdomen bronze gi'een. llypopygiuni 

 (figure /j) black, with short black hairs .and two spines at tip; outer lamellae 

 sorn(!what triangular, small, apical half black, b;is;il half yellowisli; inner 

 appendages nilher large, black, pointed at tij) with tlire(> stout yelliw liaiis. 



('oxae wholly yellow; fnie coxjie with long white hairs; middle ines with ;i 

 short yellow spine at tip and tw.) small bristles on (uiter surface; i)osteiior i);iir 

 with one black bristle. I'emora yellow, nearlj- bare below; posteiior pair 



