Diptera 47 c 



long hairs dorsally, which exceed in length the diameter of tibige, those on tin- 

 anterior sides less numerous and bristle-like; basal joint of all tarsi with two or 

 more of the hairs on dorsum conspicuously stronger than the others, ventral 

 surfaces with numerous erect setulse among the hairs. Venation similar m 

 that of ursina. 



FEMALE. Agrees in colour with the male. 



Eyes separated by about twice the distance across posterior ocelli; antenna- 

 as in the male. Thorax less conspicuously hairy than in male, the dorsum slightly 

 brown pruinescent, centrally indistinctly bivitate, between the vittae with twn- 

 rowed acrostichals; scutellum with eight slender bristles. Alxlomcn pointed 

 apically, the ovipositor very slender. Legs similar to those of male, except that 

 the basal joint of hind tarsus is not as thick as tibia, and that the hairs arc li->> 

 numerous and more bristly, noticeably so on mid and hind tibia3 and tarsi. 

 Venation as in male, the wings darker. 



Length, 4-5 mm. 



Type locality: Bernard harbour, Dolphin and Union strait, Northwest 

 Territories, July 18, 1915 (F. Johansen). 



A male in the collection lacking abdomen differs slightly from the type, and 

 may belong to a different species. 



Locality : Cockburn point, Dolphin and Union strait, Northwest Territories, 

 Canadian Arctic coast, September 5, 1914 (F. Johansen). 



Rhamphomyia herschelli, n. sp. 



FEMALE. Black, shining. Wings slightly and evenly browned. Halteres 

 black. Hairs throughout fuscous. 



Eyes separated by distinctly more than twice the width across posterior 

 ocelli; third antennal joint three times as long as its basal width; style one- 

 third as long as third antennal joint; proboscis 1-5 as long as height of head; 

 occiput with numerous hairs. Hairs on dorsum of mesonotum short, confined to 

 anterior half of disc, acrostichals two-rowed; scutellum with about ten bristles. 

 Abdomen pointed apically; ovipositor very slender. Legs rather stout, basal 

 joint of fore and mid tarsi each as thick as tibiae at apices; basal joint 

 of hind tarsus thicker than hind tibia at apex; mid and hind femora with a 

 series of squamulae along the postero-ventral margin; tibial bristles very weak 

 and sparse, none nearly equalling diameter of tibiae. Vein closing lower portion 

 of apex of discal cell very much curved; sixth vein extending to wing margin. 



Length, 5-6 mm. 



Type locality: Herschel island, Yukon Territory, July 29, 1916 (F. Johansen) 

 Two specimens. 



This may be the female of erinaciodes, but it does not agree with the male in 

 such characters as the very slender tibiae and tarsi as, from previous experience, 

 I should judge it ought to do if it were the male of that species. 



Rhamphomyia albopilosa Coquillett. 



Rhamphomyia albopilosa Coquillett. Proc. Wash. Acad. Sci., vol. 2, 1900, p. 418. 



What I take to be this species is represented in the collection by two females. 

 As the species was originally described from two males, taken at Berg bay, Alaska, 

 the female is described herewith. 



FEMALE. Black, slightly shining, distinctly grey pruinescent, especially on 

 pleura and abdomen. Wings slightly and uniformly brownish, veins dark brown. 

 Halteres pale yellow. Hairs on thorax, abdomen, and coxae and femora pale 

 yellow, scutellar bristles, most of the hairs on occiput, and all of those on palpi 

 and antennae black; tibial and tarsal bristles and hairs black. 



