ART. :il. DOLICHOPOD FLIES FROM ALASKA — VanDUZEE. 7 



PORPHYROPS CRASSIPES Meigen. 



Porphyrops crassipes RIeigen, Syst. Besclir., vol. 4, p. 50, 1824. 

 Porphiirnps fulvipes Meigen, S.vst. Besclir.. vol. 7, p. 151, 1838 (female). 

 Porphyrops crassipes Lxtndbeck, Diptora Danica, pt. 4, p. 2G4, 1012. 



Four males and six females were taken by Doctor Aldrich in 

 Alaska at the following places: Skagway, June 3; Valdez. June 8: 

 Nenana, June 22; Fairbanks, July 1, 2. Described from Europe. 



PORPHYROPS DISCOLOR Zettcrstedt. 



Rhaphium discolor Zetterstedt, Insecta Lapponica, p. 704.8, 1838 (female). 



Rhaphiiim con sob nil urn Zetterstedt, Diptera Sean., vol. 2, p. 471, 1S43 (male 

 and female). 



Porphyrops discolor Zf^ttekstedt, Becker, Nova Acta, vol. 103, pt. 3, p. 217, 

 1912. — Coquillett Porphyrops conso'brina Zetterstedt, Harriman Alaska Exp., 

 Insects, vol. 9, p. 40, 1899. 



Seven males and five females were taken in Alaska at the following 

 places: Skagway, June 4; HeaW, June 23; N'enana, June 28; and 

 Anchorage, .June 10 and July 1. Described from Lappland. 



According to Doctor Becker the female of this species was de- 

 scribed as discolor in 1838, and both sexes were described in 1843 

 under the name of consohrina. Under this last name Mr. Coquillett 

 reported the species as occurring in Alaska in 1899. 



PORPHYROPS TERMINALIS, new species. 



Male. — Length, 4.5 mm. Face verj'^ narrow, black. Palpi and 

 proboscis black. Front usually steel blue, sometimes green, not very 

 bright. Antenna (fig. 8) black; third joint scarcely more than half as 

 long as the face; arista nearly twice as long as third joint. Hairs of 

 the eyes brown. Beard black, abundant. 



Thorax green, rather dull, its posterior slope and the scutellum 

 usually steel blue, the latter with two pair of marginal bristles, the 

 outer pair half as long as the median ones. Abdomen green, the last 

 two segments usually more purple; hairs on its dorsum bhick, those 

 on the basal edge of first segment and the long ones on the sides of 

 first and second segments yellowish; venter black, its hairs white. 

 Hypop3'gium (fig. 11) of moderate size, black; its outer lamellae 

 long, tapering, ribbonlike, brown, fringed on the edge and one side 

 with long pale hairs; inner appendages a little paddle-shaped, testa- 

 ceous, with four minute spines near the middle on one edge. 



Coxae wholly black, anterior pair shining on posterior surface, 

 the anterior half dull with black hairs, those along the outer edge of- 

 anterior side pale; middle and hind coxae with pale hairs, the former 

 with a black thorn at {\]}. All femora black, fore and middle ones 

 with yellow tips; outer surface of fore femora with long black hair 

 above and a row of slender black bristles below, there are a few long 

 pale hairs between these bristles and the black hair above. Middle 

 femora with a few pale hairs at base below and three long, slender, 

 black preapical bristles on posterior side and one on anterior side; 



