38 COQTILLETT 



Dolichopus xanthocnemus Loew. 



Dolichopus xanthocnemus LOEW, Monog. N. Am. Dipt., II, p. 31, 1864. 



Kukak Bay, July 4; Popof Island, July 8 to 12 ; Kadiak, July 20; 

 Saldovia, Alaska, July 21 : Forty -four specimens. Originally de- 

 scribed from Alaska. 

 Dolichopus stenhammari Zetterstedt. 

 Dolichopus stenhammari ZETTERSTEDT, Diptera Scand., II, p. 521, 1843. 



Muir Inlet, June 12; Sitka, June 16; Virgin Bay, June 26; Kukak 

 Bay, Alaska, July 4 : Eleven specimens. This European species has 

 been reported from Labrador by Osten Sacken. 



Dolichopus festinans Zetterstedt. 



Dolichopus festinans ZETTERSTEDT, Diptera Scand., n, p. 507, 1843. 



Kukak Bay, July 3 ; Popof Island, Alaska, July 8 and 9 : Four 

 specimens of both sexes. This European species has not heretofore 

 been reported as occurring on this Continent. 



Dolichopus barycnemus sp. nov. 



Front brassy green, face yellowish gray pruinose, antennae black, 

 the lower side of the first joint reddish yellow, the third joint ovate, 

 palpi yellow, bristles of sides of occiput yellowish white; body bluish 

 green, tinged in places with brassy, lamellae of hypopygium white, 

 bordered with black, remainder of hypopygium black; front coxse 

 yellow, a black, gray pruinose spot at base of outer side, middle and 

 hind coxae black, gray pruinose, their apices yellow; femora yellow, 

 apices of hind ones black, and with a bristle on the outer side before 

 the tip, front and middle femora bare on the under side, the hind ones 

 ciliate with rather long, black hairs on the median third ; front and 

 middle tibiae yellow, the hind ones, except their extreme bases, black 

 and greatly swollen, more than twice as thick as either of the other 

 tibiae, all tibiae bearing many bristles ; front tarsi yellow on the first 

 three joints, the remainder black and somewhat compressed, fourth 

 joint slightly dilated, the fifth still more so but less than twice as 

 broad as the third ; middle tarsi black, the first joint, except the apex, 

 yellow, about as long as the remaining joints taken together ; hind 

 tarsi black, much more robust than the others ; halteres yellow, bristles 

 of calypteres black ; wings grayish hyaline, smoky brown in front of 

 the third vein, an elongated thickening of the costa at apex of first 

 vein, fourth vein not broken ; length 6 mm. A male specimen, col- 

 lected July 1 1 . 



Habitat. Popof Island, Alaska. 



