Degeeria. 553 



vein reaching near to the margin. Squamulæ whitish. Halteres 

 yellow. 



Female. Similar; frons broader, aboiit as broad as the eye; 

 ocellar bristles small, but inner verticals strong, no outer verticals. 

 Abdomen not translucent at the sides, ending with a broad, spatiila- 

 shaped black and shining plate; third and fourth segment with only 

 ene pair of discai bristles. 



Length. Rather varying in seize, the length from 5 to aboiit 

 9 mm. 



D. collaris is not just common in Denmark; Ordrup Mose, Dyre- 

 haven, Hareskov, Hellebæk; in Jutland at Sønderborg and Frijsen- 

 borg and on Bornholm at Rø; the dates are ^/g — ^/to- It is recorded 

 as bred from Galerucella luteola. 



Geographical distribution: — Europe; towards the north to 

 northern Scandinavia, and in Finland. 



2. D. luctuosa Meig. 



1824. Meig. Syst. Beschr. IV, 347, 186 {Tachina) et 1838. VII, 203, 5, 

 Tab. LXIX, Fig. 7—12 (Medoria). — 1862. Schin. F. A. I, 549 (Medoria). — 

 1893. B. B. Denkschr. Akad. Wiss. Wien, LX, 222. — 1907. Kat. palåarkt. 

 Dipt. III, 398. —1921. Baer, Zeitschr. f. angew. Ent. VII, 374. — 1924. Stein, 

 Arch. f. Naturgesch. 90, 6, 149, 2. — T. ambulatoria Meig. 1824. 1. c. IV, 407, 291 

 et 1838. VII, 249, 9. — 1900. Stein, Ent. Nachricht. XXVI, 131. — T. funebris 

 Meig. 1830. I. c. VI, 371, 321. — 1900. Stein. 1. c. 138. — 1906. Villen. Wien. 

 Ent. Zeitg. XXV, 247 {Morinia). — T. pulchella Meig. 1824. 1. c. IV, 406, 289 

 et 1838. VII, 249, 15. — 1900. Stein, 1. c. 147. — T. halterata Zett. 1859. Dipt. 

 Scand. XIII, 6089, 72—73. — Hypostena medorina Schin. F. A. I, 538. — 

 1889. B. B. 1. c. LVI, 106, Tab. V, Fig. 104 (Amedoria) et 1893. Verh. zool. bot. 

 Geseli. Wien, XLIII, 460. 



Male. Frons narrow, about one third of the breadth of the eye; 

 jowls narrow. Orbits and cheeks silvery, the former dark above; 

 jowls grey; frontal stripe velvet black, Inner and fme and small 

 outer vertical bristles. Two rather distinct orbital bristles. Vibrissæ 

 not small, ascending to middle. Head otherwise as in collaris, but 

 occiput more black-haired above. Antennæ black, third joint about 

 thrice as long as second; arista thickened in about basal half, second 

 joint quite slightly elongated. Palpi black. Thorax mainly as in 

 collaris but more shining, and the stripes indistinct or wanting; it 

 is nearly bare; bristles as in collaris but there are three sternopleural 

 bristles; the other hairs on sternopleura are, however, rather strong, 

 so that the number of real sternopleurals may be difficult to decide. 



