1923 ] New Species of North American Dolichopodidoe 71 
than wide; cilia of the calypters about half black; the costa 
not enlarged at tip of first vein. 
Described from two males and one female, taken in Powell 
Co., Montana, by A. L. Melander. Holotype and allotype in 
the collection of A. L. Melander. 
This would run to formosus in the table of species in the 
U. S. National Museum Bulletin 116, page 11, couplet 5, in group 
C, but differs from that species in having the hypopygial lamel- 
lae jagged at apex and fringed with short hairs above, formosus 
has the lamellae fringed above with longer hairs and their apical 
margin is not at all jagged, the black border is broader in this 
form than it is in formosus. The wing in interjectus has a dis- 
tinct enlargement at tip of first vein and the anal angle is more 
prominent than in formosus. 
The female runs in the table of species in the Bulletin, page 
28, couplet 23, to nigrimanus, but it differs in having the fore 
tarsus fully as long as the tibiae, while in nigrimanus they are 
scarely as long as the tibiae. 
Dolichopus perplexus nom. nov. 
Dolichopus misellus Melander, Canadian Entomologist, vol. 
xxxii, p. 130, 1900. U. S. National Museum Bulletin 116, page 
229, 1921. Dolichopus melanderi Becker, Zool-Boten. Gell- 
schaft, Wien, vol. xiii. No. i, page 15, 1921. 
Dr, Becker in the American portion of his monograph of 
the Dolichopodidae gives the name melanderi to Dolichopus 
misellus Melander, as that name was preoccupied by Dolichopus 
misellus Bohem., 1851, but as that name is also preoccupied by 
the publication of the description of a Dolichopus melanderi 
VanDuzee, Cole & Aldrich, in March, 1921 (U. S. National 
Museum Bulletin 116, page 70, I would propose the name 
perplexus for this form. 
