Stratiomyiidae. 29 



fourth segment, thus inclading a more or less triangular, white spot, 

 tlie prolongations are generally produced somewhat to the sides; fourth 

 segment black with a white, somewhat vaved hind margin, fifth seg- 

 ment black with white hind margin. Venter white with black, gene- 

 rally more or less triangular spots at the side margins of the seg- 

 ments, these spots are somewhat varying in size, being smallest on 

 the second segment, and here sometimes absent, on the fifth segment 

 often, and sometimes also on the fourth produced inwardly along the 

 front margin, making this black. Pubescence on abdomen greyish 

 white, shining. Femora black with the tips broadly white, tibiæ 

 white, hind tibiæ black in the middle, this colour going near to the 

 apex, anterior tibiæ generally distinctly brownish in the middle; tarsi 

 white, slightly darkened towards the ends. Wings hyaline with white 

 veins, stigma light yellowish. Halteres white, peduncle brownish. 



Female. Snout short, two small, triangular, not oblique spots 

 above the antennæ, one at each eye-margin, widely separated in the 

 middle. Eyes round. Thorax with the pubescence somewhat de- 

 pressed. Abdomen black with a small triangular middle spot on the 

 second, third and fourth segments, and with linear, transverse side 

 spots at the hind margins of the same segments, fourth segment with 

 white hind margin, connecting the side spots and reaching the 

 side margins; all the side margin of the abdomen narrowly white, 

 more or less connected with the transverse side spots on the second 

 and third segments. Venter black with white hind margins of the 

 segments, the margins often widened in the middle, and the second 

 segment generally with a large white spot in the middle. 



Length 5 — 6,5 mm. 



This species in both sexes is easily distinguished from the pre- 

 ceeding ones by the design of the abdomen and by the short snout, 

 and from uliginosus it is moreover easily distinguished in the female 

 by the shape of the white spots above the antennæ. Zetterstedt 1. c. 

 refers it as N. notatiis Stæger in litteris, so that the name originally 

 is due to Stæger. 



N. notatus is less common than the preceeding species, though it 

 is not at all rare; vicinity of Copenhagen, Vesterfælled, Amager, For- 

 tundammen, Jægerspris and at Skelskør; on Funen at Hoffmansgave 

 by Odensefjord; in Jutland at Horsens, Nykøbing on Mors and on 

 Læsø; finally on Bornholm at Allinge. My dates are ^^/e — ^Is. It is 

 well known to be a species that prefers salt marshes and other salt 

 grounds (v. Heyden, Stet. Ent. Zeit. V, 202, and Jaennicke, Berl. Ent. 

 Zeitschr., X, 225); I have taken it on Vesterfælled in the flowers of 

 Grepis together with uliginosus, but not in so great numbers. 



