M. C. VAN DUZEE 83 



Hood River, Oregon, June 21, 1917; several specimens taken l)y 

 Prof. James S. Hine, at Kodiak, Alaska, in June, 1917, and one 

 male taken by J. M. Aldrich, at Skagway, Alaska, June 4, 1921. 



Holotijpe and allotype in the autlior's collection and taken at 

 Wells, Nevada. 



The ?nale of Jemoraium differs that of xipheres Wheeler in 

 having the inner appendages of the hypopygium more shovel- 

 shaped, not at all club-shaped, and in having the hind femora 

 much more blackened at tip. Wheeler's species is from the 

 First, these forms from the West. 



Xiphandrium triangulatum new species (Toxt-fis;. 6.) 



o^: Length, 2 mm. Faec very narrow, in the type the ej'es seem to touch 

 in the middle of the face; below, it has silvery white pollen. Front blackish. 

 Antennae black; third joint as long as the heafl-height, about as wide at base 

 as the width of the front and tapering a little towards the top; arista thick, 

 not much longer than the width of the third joint at base. Lateral aud in- 

 ferior orbital cilia white. 



Thorax shining green; plevu'a dulled with white pollen. 



Abdomen green with bronze reflections. Ilyjiopj'gium black with rather 

 long black hair; the outer lamellae (fig. G) yellowish, with upper edge black 

 and fringed with pale hairs; thej^ are triangular with a stem at base; inner 

 aj)pendages very small. 



Fore coxae pale yellow, a little l)lackened at base, their anterior surface 

 covered with long white hair; I cannot see any black bristles or hairs at tip. 

 Middle and hind coxae black, narrowly yellow at tip, the former with three 

 black bristles near the tip on outer surface, the latter with one lilack 

 bristle, middle pair with minute yellow hairs on the front surface and a yellow 

 spine at tip. Femora yellow, the hind ones a very little blackened above at 

 tip and with one preapical bristle. Middle femora with two preai)ical bristles, 

 one on each side, and ciliate below with long yellow hairs on lower posterior 

 etlge, which are longer than femoial width. Fore and middle tibiae yellow, eac^h 

 with several bristles on upper surface; hind tibiae brownish yellow. Fore 

 tarsi about as long as their tibiae, black from the tip of the first joint, which 

 is not quite as long as the remaining four joints taken together. Middle 

 tarsi a little longer than their tibiae, infuscated from the tip of the first joint, 

 the base of the joints still paler, their tips blackish. Hind tarsi brown, their 

 first joint a little shorter than the second. Calypters, their cilia and the 

 halteres, yellow. 



\\'ings graj'ish; beyond the cross-vein the third and fourth veins are a 

 little arched so as to separate and then aj)proach each other, still they are 

 nearly parallel towards the tips, the fourth ending in the apex of the wing; 

 last section of the fifth vein more than four times as long as the cross-vein; 

 sixth vein nearly parallel with the margin of the wing, the wing being nar- 

 rowinl at base. 



TU.\NS. AM. ENT. SOC, XLVHI. 



