2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



DOLICHOPUS ANNULIPES Zetterstcdt. 



Doliclioims annulipcs Zettekstedt, Insecta Lapponica, 183S, p. 710. 

 Bolichopus stenhammari Zetterstedt, Diptera Scandiuaviae, vol. 2, p. 521, 



1843.— Van Duzee, Cole, and Aldrich, Bull. 116, U. S. Nat. Mus., p. 59, 



1921. 



Two specimens, Healy and Nenana, Alaska. Described from Lap- 

 land and common in northern Europe; has been reported several 

 times from Alaska and Labrador, and one specimen is known from 

 New Hampshire (White Mountains). According to Frey, it occurs 

 all over Finland, and is especially characteristic of Lapland. I here 

 follow Becker's monograph in accepting anmdipes as not preoccupied 

 by Porphijro'ps annulipes of Meigen. 



DOLICHOPUS XANTHOCNEMUS Loew. 



. DoKchopus xanthoenemus Loew, Smiths. Misc. Colls., No. 171. p. 31, 1864.— 

 Van Duzee, Cole, and Aldrich, Bull. 116, U. S. Nat. Mus., p. 84, 1921. 



Nineteen specimens, from Seward, Anchorage, Camp 327, and 

 Fairbanks, Alaska. Originally described from Sitka, and since 

 recorded several times from Alaska. 



DOLICHOPUS GROENLANDICUS Zetterstedt. 



Dolichopns groenlandicus Zetterstedt, Diptera Scandiuaviae, vol. 2, p. 528, 

 1843.— Van Duzee, Cole, and Aldrich, Bull. 116, U. S. Nat. Mus., p. 94, 

 1921. 



Ninety-four specimens, from Seward, Anchorage, Camps 327 and 

 344, Healy, and P'airbanks, Alaska, June and July. Originally de- 

 scribed from Greenland and later reported from northern Europe. 

 Bulletin 116 records it from Labrador and a specimen from Colorado. 

 While that paper was in preparation I collected a series at Tennessee 

 Pass, Colorado, altitude a little over 10,000 feet (3.05 kilometers). 



DOLICHOPUS SOLIDUS Van Duzee. Cole, and Aldrich. 



Dolichopns solidus Van Duzee, Cole, and Aldrich, Bull. 116, U. S. Nat. 

 Mus., p. 104, 1921. 



Thirteen specimens, both sexes, Anchorage, Camp 327, and Healy, 

 Alaska, June 15 and July 7. Described from a single male taken on 

 the Alaska- Yukon boundary near the Arctic Ocean. The front tarsi 

 were missing in the type. I find that they are of peculiar and dis- 

 tinguishing structure, being flattened horizontally (depressed). The 

 second and third joints are very thin as viewed from above, and 

 the fourth and fifth are widened (depressed) and fringed laterally. 

 Second and third of equal length, together equaling the first. I ob- 

 tained a male and two females of this species at Tennessee Pass, 

 Colorado. July 9 and 10, 1919. 



