Aphiochaeta. 235 



and Hejls soiith of Kolding, Jelling, Ry and Silkeborg (the author); 

 my dates are ^Ve — ^^/s, I have taken it in copula on ^Vt. I possess 

 ja specimen, a male, with six well developed scutellar bristles. 



Geographical distribution: — Northern and middle Europe 

 down into Styria; towards the north to middle Sweden and in Finland ; 

 it occurs also in North America down into the West Indies. — I have 

 seen Zetterstedt's type to interrupta and can confirm Becker's state- 

 ment that it is identical with picta Lehm. 



3. A. Giraudii Egg. 



1862. Egg. Verhandl. zool. bot. C4esell. Wien, XII, 1235 (Phora). — 1864. 

 Schin. F. A. II, 341 {Phora). — 1901. Beck. Abhandl. zool. bot. Gesell. Wien, 

 I, 58, 50 (Phora). - 1908. Wood, Ent. Month. Mag. 2, XIX, 170, 216 (Phora). 

 - 1910. Kertész, Cat. Dipt. VII, 407. - 1914. Brues, Bull. Wisc. Nat. Hist. 

 Soc. XII, 120. — 1918. Schmitz, Jaarb. Natuurh. Genootsch. Limburg 1917, 

 137. — Trineura bicolor p. p. Zett. (nec Meig.) 1848. Dipt. Scand. VII, 2880, 29. 



Male. Frons a little broader than high, nearly qiiadratic, grey, 

 indefinitely reddish at the anterior margin; the inner bristle of the 

 lower row less vertically below the oiiter than in the preceding species, 

 considerably more inwards; iipper supraantennals less distant, rather 

 noarer the middle furrow than the eye-margin, lower supraantennals 

 a little more approximate. Antennæ scarcely as large as in picta, 

 brown or dark brown, arista very short-pubescent, nearly nude. 

 Palpi yellow, with ordinary armature. Thorax yellow to blackish 

 brown or quite black, pleura yellow or reddish brown, often darkest 

 posteriorly or all blackish brown. Mesopleura bare. Scutellum with 

 four equal bristles. Abdomen black, dull, with narrow pale hind 

 margins to the segments, first segment generally also more or less 

 pale on the front part; abdomen otherwise shaped and haired as in 

 picta, the venter often darker. Hypopygium small, more or less pale 

 grey, the side prolongations small, triangularly pointed, hairy at apex; 

 anal tube yellowish grey, palest towards apex, with some longish 

 hairs above and below. Legs yellow, posterior tarsi a little darker, 

 hind femora black at apex and middle coxæ with a black spot behind; 

 hairs and bristles on the legs as in picta, the anterodorsal bristles on 

 hind tibiæ few and very small; hind femora with long hairs below on 

 the basal half, but they are less strong and more numerous than in 

 picta. Wings slightly yellowish tinged, veins brown or yellowish 

 brown; costa not reaching quite to the middle, 1 double 2 or almost 

 so and longer than 2 + 3; costal cilia short; angle at fork more acute 



