Ernestia. 493 



middle with a backwards directed triangular tooth with a deep 

 middle fiirrow and thus almost dividod into two close-lying teeth; 

 the dilatation bears long, upwards directed hairs at upper margin; 

 the arms of lower forceps have at base a large, scale-like, shining 

 plat«, inwards from which a long claw-like prolongation issnes with 

 an inwards curved, hook-shaped apex; it has a bundle of hairs on 

 posterior margin near base; the arms are longer than upper forceps. 

 Legs black. Wings shghtly tinged; veins brown or blackish; discai 

 angle without veinlet; apical cross- vein more or less concave. Squa- 

 mulæ white. H alteres brownish yellow. 



Female. Similar; frons about as broad as the eye; third antennal 

 joint not dilated; fourth abdominal segment with a row of marginal 

 bristles; front tarsi with the three last joints dilated. 



Length 9 to fully 10 mm. 



E. vivida seems to be rare in Denmark, we have 9 specimens, 

 six from earlier time, of which one from Sorø, the others from near 

 Copenhagen, and one of these latter mentioned as consobrina in 

 Zett. 1. c. III; f urther one from Lundtofte and two from Rebbild 

 in Jutland (Kryger); the dates are in July. — I have examined 

 specimens sent from Zetterstedt to Stæger. 



Geographical distribution: — Europe; towards the north into 

 Lapland. 



Remarks: Stein considers the species as identical with conso- 

 brina Méig., but, according to a communication from Dr. Villeneuve, 

 this latter species differs not only by four postsutural dorsocentrals 

 but also by the shape of the male genitalia. 



3. E. connivens Zett. 



1844. Zett. Dipt. Scand. III, 1116, 112 et 1859. XIII, 6107, 112 {Tachina). 

 — 1898. Brauer, Sitzungsber. Akad. Wiss. Wien, CVII, 536, 8 (Erigone). — 

 1907. Kat. palåarkt. Dipt. III, 211. — ^ 1921. Baer, Zeitschr. f. angew. Ent. 

 VII, 133. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 53, 4 (Platychira). — 

 Erigone insciens Pand. p. p. 1896. Rev. Entom. XV, 36, 9. — 1907. Villen. 

 Ann. Soc. Ent. de Fr. LXXVI, 387. 



Male. Frons about one fourth of the breadth of the eye, some- 

 what protruding; cheeks of a similar breadth, and jowls about one 

 third of the height of the eye. Orbits and face yellowish, the orbits 

 in some views dark; jowls grey; frontal stripe black, dark reddish 

 anteriorly. Frontal bristles reaching just below insertion of antennæ. 

 Orbits with a few black hairs; jowls with longish black hairs. Occiput 



