Leptididae. 151 



Eoserup near Roskilde, Faxe and Sorø ; Jutland at Frijsenborg, and on 

 Borniiolm at Rønne. All the specimens have been taken in July; it 

 occurs in similar localities as tlie preceding. 



Geographical distribution: — Europe from northern Svveden to 

 Italy; in the northern parts of Sweden it becomes rare. 



8. C. luteolus Fall. 



1814. Leptis, Fall. Dipt. Suec. Anlhrac. 14, 10. — 1842. Chrysopila, 

 ZeW. Dipt. Scaud. 1, 223,3. — 1903. Kat. palaaikt. Dipt. II, 86. 



Male. Front and face grey, epistoma yellow; the cheeks with 

 yellow hairs. Anlennæ yellow, arista brownish. Palpi yellow. Thorax 

 darker or lighter brown, posleriorly yellowish; densely covered with 

 depressed, deeply golden hairs. Scutellum yellow, partly with depressed, 

 at the apex with erect, golden hairs. Sterna and pleura yellowish, 

 metapleura with a tuft of yellow hairs. Abdonien yellow or reddish 

 yellow, slightly darkened at the apex. Venter yellow. Abdonien 

 dothed with longish, yellow hairs. Legs yellow; the tarsi slightly 

 darkened towards the ends. The coxæ with longish, yellow hairs, 

 only on the hind coxæ forming a small tuft, for the rest the legs are 

 short haired; the femora with depressed golden hairs above; tibiæ 

 fmely spinulous. Wings hyaline at the apex, yellow at the base and 

 the anterior margin; the veins yellowish brown, a tuft of golden hairs 

 at the base of the costa; the stigma long, pale brownish, an indistinct, 

 pale fumigated band from it and down over the end of the discai 

 cell, the band is especially indistinctly separated towards the yellowish 

 basal part of the wing. Halteres yellow, the knob brownish. 



Female. Front broad, yellowish. Thorax with two yellow, longi- 

 tudinal stripes on the disc, and the lateral margins yellow, sometimes 

 also a narrow, median stripe; thorax might be termed yellow with 

 three broad, brown sti-ipes. The covering hairs paler than in the 

 male. The hairs on abdonien more depressed than in the male. The 

 stigma faint, yellowish, and the fumigation very faint, sometimes 

 nearly disappearing, the wings upon the whole clearer than in the male. 



Length 6 — 8 mm. 



This species is distinguished from the preceding one by the 

 entirely yellow antennæ and palpi and the yellow abdomen, and also 

 by the paler wing stigma and fumigation which both niay be almost 

 disappearing in the female. Though the nieasurements given are 

 only slightly smaller than those given for nubecula, yet the species 

 generally conveys the impression of being smaller, especially the 

 males. 



C. luteolus is rather rare in Denmark, and, as it seenis, more 



