108 Syiphidae. 



thickened. Wings a little tinged ; stigma brown, below it an undefined 

 browning; upper marginal cross-vein soniewhat recurrent (but varying 

 in this respect), very slightly undulated; lower marginal cross-vein 

 curved a little angularly inwards. Squamulæ white. Balteres pale 

 yellovv. 



Female. Frons broad, rugosely punctate, with a slightly depressed 

 ehannel down the middle and a dot-like impression in front of it; on 

 each side there are four to six irregular cross-furrows ; the pubescence 

 all pale, only a little dark about the ocelli. Third antennal joint a 

 little broader than in the male. Fourth abdominal segment with a 

 rather large, somewhat pointed wart in the middle of the hind-margin, 

 and the fifth with a small, narrow excision in the hind margin. 



Length 5 — 6 mm. 



O. nohilis is somewhat rare in Denmark; Roskilde and Boserup 

 at Roskilde; on Funen at Odense (H.J.Hansen), and at Faaborg 

 (Schlick); in Jutland at Horsens (O.G.Jensen) and at Laven near 

 Silkeborg (H. J. Hansen). The dates are in July and August. It occurs 

 in low herbage and on flowers on humid piaces and at horders of 

 water. 



Geographical distribution : — Europe down into Italy ; towards the 

 north to northern Sweden, and in Finland. 



II. Liogaster Rond. 



Eyes in the male widely separated, the facets of equal size. Epistoma 

 without central knob. Antennæ short with the third joint rather large, 

 and larger in the male than in the female. Abdomen all shining. Hind 

 femora not setulose beneath. Wings with the upper marginal cross- 

 vein not recurrent. 



There are three palæarctic species, two occur in Denmark. 



Tahle of Species. 



1 . Anlennæ and legs black 1 . metallina. 



— Third antennal joint more or less yellowish beneath ; tarsi 



more or less yellow 2. splendida. 



1. L. metallina Fabr. 



1777. Fabr. Gen. Ins. 307 et 1781. Spec. Ins. II, 431, 52 et 1787. 

 Mani. Ins. II, 340 et 1794. Entom. Syst. IV, 303, 95 (Syrplms). — 1862. 

 Schin. F. A. I, 2G8. — 1901. Verr. Brit. Fl. VIII, 192, 1, figs. 203—204. 



— 1907. Kat. palåarkt. Dipt. III, 17. — Eristalis metallica Fabr. 1805. 

 Syst. Antl. 246, 67. — 1817. Fall. Dipt. Suec. Syrph. 57, 16. — Chryso- 



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