Stialiomyiidae. 71 



Thorax wlth greyish brown pubescence that is shorter than in the 

 male. Abdonien not brown at the base, and the pubescence paler 

 than in the male. Wings clearer than in the male, somewhat yello- 

 wish and thus the brown stigma much more conspicuous. 



Length 5 — 6,3 mm. 



B. vallata is the only species of Beris, wliich is to some degree 

 common here, though it has generally only been taken in single or a 

 few specimens ; vicinity of Copenhagen. Utterslev Mose, Fortundammen, 

 Dyrehaven, Ørholm, Hillerød, Boserup at Roskilde and Tidsvilde; 

 Lolland at Maribo; Langeland in Aasøskov, a forest at Tranekær; 

 Funen at Odense and Jutland at Laven, Frijsenborg and Horsens. 

 My dates are ^'*i6 to the flrst part of August. 



Geographical distribution: — Northern and niiddle Europe down into 

 France, towards north to southern Svveden. 



2. B. clavipes L. 



1767. Musca, Linn. Syst. Nat. XII. 981, 12.— 1842. Zett. Dipt. Scand. 

 1, 132, 3. — 1846. Loew, Stett. Ent. Zeit. VII, 259, 2. — 1862. Schin. 

 F. A. I, 24. — 1903. Kat. palaarkt. Dipt. II, 37. 



Male. Eyes hairy, facets in about the upper two thirds larger 

 than below. Antennæ black, the first joint longer than the second. 

 Thorax black with blackish pubescence. Abdonien red with brownish 

 pubescence. which is long at the margin : the base brown ; on the second 

 to sixth segment the transverse, impressed line just in front of the 

 hind margin is more or less distinctiy blackish; the seventh segment 

 is not brown. Venter yellowish red. Legs yellow; the apical half 

 of the anterior tibiæ. the hind tibiæ at the tips and all tarsi blackish; 

 the hind metatarsi much thickened. Legs with fine, yellowish pubes- 

 cence. Wings considerably brownish and more so than in vallata. 

 especially towards the anterior margin, veins brown; stigma not con- 

 spicuous. Balteres brownish. 



Female. Eyes sparingly and very short hairy. Front broad. 

 black. Thorax with brown pubescence. Abdomen not brown at the 

 base; wings nearly as brown as in the male. 



Length G — 6,3 mm. 



This species is very similar to. and very nearly related to vallata. 

 yet 1 surely think it is a distinct species. The blackish, transverse 

 lines on the abdomen are rather characteristic, to be sure something 

 like may be found in vallata, but only in not well preserved specimens 

 in which the whole abdomen is more or less darkened. Besides by 

 this character it is also generally distinguished by the colour of the 



