310 
_ black. Mandibles provided with three teeth, the two ex- 
tremes, poverful, long, pointed and strongly chitinised. 
Palpi as in the other genera. 
Antenne placed close to mouth. Scape long, power- 
ful, pedicellus almost of equal size to the scape, anel- 
lus little, club only a little longer than scape, all three 
joints of club almost of equal length each about as long 
as funiculus. Males club provided with stronger sense- 
organs than females. Anterior wings: subcosta long, co- 
stal vein very long, radius short, stigma before the center 
line of wing, with a very little faint shading below stig- 
ma, surface with about twelve rows of hairs and a num- 
ber of spread hairs outside the rows, fringe rather short; 
posterior wings sword-shaped, long, one row of hairs on 
surface, anterior margin with short, hind margin with 
long hairs. 
Length: male 0,75 mm, female 0,9 — 1,00 mm. 
At Ryget and Skovrøddam the species is very com- 
mon, other places only taken singly. .It appears to prefer 
wet meadows (Ryget and Skovroddam), although it has 
also been found on high dry grass land. 
Figures A and B are representing wings of some spe- 
cimens, quite resembling the ordinary form, but which 
have abnormal veins, with a very strongly chitinised cen- 
tral part. Som few specimens amongst many of the type 
form from Rude Hegn. 
Dania: Dyrehaven, Ermelunden, Fortunens Indelukke, 
Rude Hegn, Ryget, Frerslev Hegn. 
Dates: 12/;—7/,, 1916-1918. A single specimen 11/p. 
Types in Zoological Museum Copenhagen. 
Chaetostricha dimidiata (Haliday). 
1851. Chaetostricha dimidiata (Haliday) Walker. Ann. Mag. Nat. Hist. 
(2) VII. p. 211. 
1898. Chaetostricha dimidiata. Dalla Torre. Cat. Hym. V. p. 3. 
1904. Chaetostricha dimidiata. Ashmead. Classification p. 360. 
1914. Chaetostricha dimidiata. Wolff. Zeit. f. Forst- u. Jagdw. XLVII 
p- 556. 
