48 c Canadian Arctic Expedition, 1913-lS 
Eyes widely separated; third antennal joint conical, about 2-5 times as long 
as its basal width; style slightly over one-third as long as third antennal joint; 
proboscis fully twice as long as height of head. Hairs on thorax long and soft, 
the acrostichal series in two to three irregular rows; plate on venter between 
fore coxae long-haired; scutellum with four bristles. Abdomen rather acutely 
pointed apically. Legs very slender; femora with very short surface hairs; fore 
tibiae without differentiated bristles; mid and hind tibiae with a few short bristles 
on dorsal surfaces which are not as long as the diameter of the tibiae; tarsi 
slender, all joints with stiff black setulae ventrally, and a few differentiated 
setulse on dorsum of at least the basal joint. Wing venation normal; the vein 
closing lower portion of apex of discal cell very oblique, almost straight; sixth 
vein thick to apex, extending to margin of wing. 
Length, 7 mm. 
Localities: Herschel island, Yukon Territory, July 29, 1916; Cockburn 
point, Dolphin and Union strait, Northwest . Territories, September 3, 1914 
(F. Johansen). 
Rhamphotnyia conservativa, n. sp. 
\ 
Male. Black, subopaque. Wings brownish, more distinctly so basally. 
Halteres yellowish. Hairs and bristles black. 
Eyes contiguous; third antermal joint nearly three times as long as its 
width at base; style stout, rather more than one-third as long as third antennal 
joint; proboscis about 1-25 as long as height of head. Dorsum of mesonotum 
rather densely hairy, the hairs upright, slender, and of moderate length; ventral 
plate between bases of fore coxae bare; hairs in front of base of halteres long and 
dense; scutellum with eight to twelve fine hairs on posterior margin. Abodmen 
with rather sparse short hairs, which are longer near posterior margins of segments; 
hypopygium of the same general typeas that of erinacioides, but the portion that 
is directed cephalad over dorsum reaches about three-fourths of the way to base 
and is pale yellow in colour, contrasting strikingly with the dark abdomen; 
lower posterior angle of hypopygium produced caudad in the form of a short 
subtriangular process; hypopygial filament very thick for a short distance at 
base, then becoming abruptly setiform, hidden for the greater portion of its 
length. Legs slender, femora with a number of very short setulae on ventral 
surfaces, which are confined to basal third on hind pair; apical two-thirds of 
hind femora and the whole of hind tibiae ventrally with very dense microscopic 
pile, intermixed on the tibiae with short erect spinules; basal joint of hind tarsus 
nearly as long as the next four joints combined, the entire tarsus much shorter 
than tibia; dorsum of tibiae and tarsi with short setulae; tarsal claws very much 
curved, sickle-shaped, of good size. Venation as in previous species except that 
the vein closing lower portion of discal cell is distinctly curved. 
Female. Similar in colour to the male, the wings more distinctly brownish. 
Eyes separated by nearly twice the width across posterior ocelli. Dorsum 
of mesonotum with fewer and shorter hairs than in the male, the anterioi' 
acrostichals four to six-rowed. Abdomen pointed at apex. Legs more setulose 
than those of the male, the hind femora with setulose hairs on their entire ventral 
surface; ventral surface of hind tibiae with short regular setulae instead of erect 
pile; basal joint of hind tarsus longer than next four combined; tarsal claws 
nuich shorter than in male. Wings broader than in male, the venation similar, 
but vein closing lower portion of apex of discal cell less curved. 
Length, 6 -5-7 -3 mm. 
Type locality: West of Bernard harbour, Dolphin and Union strait. North- 
west Territories, July 14,. 1916. Paratypes, Herschel island, Yukon Territory, 
July 29, 1916; Bernard harbour, Northwest Territories, July 10, 18, 19, and 
August 1-7, 1915; Young point, Northwest Territories, July 18, 1916 (F. Johan- 
sen). Nine specimens. 
