Enipididae. 135 



domen shorter than in the male; abdomen brownish grey, with the 

 light from behind darker; the lamellæ of the ovipositor somewhat 

 long and slender. Front femora ciliated on the anterior side, the 

 hairs in the basal half somewhat scaly; middle femora with fme hairs 

 below, which are long in the apical half; hind femora ciliated below 

 with somewhat scaly hairs; the posterior tibiæ with short but strong 

 bristles on various sides; the middle tibiæ have ventrally near the 

 base a very slight dilatation densely beset with short bristles. Wings 

 quite hyaline. 



Length 7 to about 10 mm. 



E. livida is like tessellata very common in Denmark and has 

 been taken in all parts of our country. It is seen during a great 

 part of the summer, my dates reach from the last half of June to ^y. 

 It occurs both in the outskirts of woods and outside, but it seems 

 especially to prefer grassy fields, commons and meadows. 



Geographical distribution:— Europe down into France; towards 

 the north to middle Sweden, and in Finland. 



27. E, nigricans Meig. 



1804. Meig. Klass. eur. zweifl. Ins. I, 224, 14, et 1822. Syst. Beschr. 

 III, 34, 35. — 1903. Kat. palåarkt. Dipt. II, 240. — Empis rustica: 1815. 

 Fall. Dipt. Suec. Empid. 18, 3. — 1842. Zett. Dipt. Scand. I, 371, 3. — 

 1862. Schin. F. A. I, 104. 



Male. Eyes contiguous; frontal triangle and epistoma greyish 

 brown. Occiput grey with black bristles, on the lower half with 

 whitish yellow hairs. Labrum about twice as long as the head is 

 high; palpi yellow, with yellow, at the apéx with dark hairs, An- 

 tennæ as long as the head, black, the two first joints generally 

 brownish or yellowish, with short, black hairs; the first joint about 

 twice as long as the second. Thorax brownish, with three somewhat 

 broad, blackish stripes, the median abbreviated behind. The dorso- 

 central bristles irregularly biserial or pluriserial, long and uniserial 

 behind, the acrostichal bristles biserial, all black. Further a humeral 

 bristle, a posthumeral, a number (four to five) of notopleural, a 

 supraalar and a postalar bristle, all black; besides there are some 

 strong hairs on the humeri and at the sides of the disc, especially 

 some in front of the supraalar bristle and these latter may be rather 

 strong; in the anterior part of the præsutural depression there are 

 some yellow hairs. Scutellum with four black marginal bristles. 

 Pleura grey, metapleura with yellow, and sometimes some brown 

 bristles; propleura with yellow hairs; the spiracles yellowish. Ab- 

 domen black or greyish black, shining. It is clothed in the middle 



