ART. i.'l. DOLICHOPOD FLIES FROM ALASKA — ^VanDUZEE. 9 



This Species has the appendages of the hypopygium very much 

 like those of elegantula Meigen, but is smaller, duller, the legs are 

 much more blackened and the hair on fore coxae is mostly black in 

 this form while in elegantula it is whitish; they also differ in other 

 points. 



PORPHYROPS BOREALIS, new species. 



This form has the head parts, the outer hypopygial lamellae and 

 general color as in terminalis, new species; it differs in having the 

 hair on the fore coxae and posterior surface of the fore femora 

 wholly black and longer; middle tibiae wholly yellow; the hind 

 tibiae wholly black on its lower edge, and the inner appendages of 

 the hypopygium very small with a short hair (almost spine-like) 

 at tip. 



Type and paratype. — Males, Cat. No. 26340, U.S.N.M. There are 

 additional paratypes in a series from Savonoski, Naknek Lake, 

 Alaska, collected in June and July by Prof. James S. Hine; I have 

 given a fuller description of this species in a paper on his collections, 

 not yet published. 



PORPHYROPS NUDUS, new species. 



Male. — Length 4-4.75 mm. ; of wing 3.25-4 mm. Face very nar- 

 row, black. Front green. Palpi black with brownish yellow hairs. 

 Antennae black; third joint a little longer than the two basal ones 

 taken together; arista a little longer than the antenna. Beard long 

 and abundant, brown or black. 



Thorax and scutellum bright green or blue-green, scutellum with 

 two pairs of marginal bristles, the outer pair half as long as the 

 median ones. Abdomen bright green, its hairs mostly pale, they are 

 long on the sides of first three segments; there are no black bristles 

 in the hind margin of first segment except two very small ones on 

 each side nearly on the dorsum. Hypopygium black, upper portion 

 dull and covered with pale hairs, lower part more shining, deeply 

 emarginate on lower edge so as to form a short flap on each side of 

 the lamellae; outer lamellae (fig. 9) yellowish brown, wide just above 

 the stem, forked, somewhat U-shaped, with one arm only about half 

 as long as the other; inner appendages are a pair of yellowish, nearly 

 straight still a little curved, slender, finger-like organs, they are about 

 as long as the width of the lamella just before the fork, and seem to 

 have minute hairs on the edges. 



Coxae black; anterior pair with long black hair, those at base on 

 outer corner appear more yellowish red in certain lights; middle 

 and hind ones*with a few white hairs, the former with a black thorn 

 at tip. Femora black with extreme tips yellowish; anterior pair 

 with pale hairs on posterior surface; middle ones with a few long 

 pale hairs at base below and three preapical bristles on posterior 

 side and one in front ; posterior pair with one small preapical bristle, 

 their hair rather short. Fore tibiae yellow, blackened on upper edge. 



