Asilidae. 79 



bristles, also those on the tarsi, are black. Wings hyaline, broadly 

 greyish fumigated along the apical part of the front margin, the apex 

 and the hind margin; the bordering of the fumigation distinct; veins 

 brownish black. Balteres yellow to yellowish brown. 



Female. Ovipositor shining black, somewhat longer than the two 

 last segments. 



Length 11 — 15 mm. 



As seen from the description this species may vary somewhat 

 in colour from brighter to darker especially as regards the legs and 

 the hairs. 



i¥. atricapillus is common in Denmark Ordrup Mose, Ermelund, 

 Dyrehaven, Geel Skov, Hillerød, Tyvekrogen, Slagelse, Bogenæs; on 

 Lolland at Lysemose near Maribo ; on Funen at Odense, Veflinge and 

 Hofmansgave; in Jutland at Horsens, Laven, Frijsenborg, Silkeborg, 

 Sæby and Lønstrup, and on Bornholm at Hasle. It is a late occur- 

 ring species, my dates are ^h — ^h. It occurs generally in woods, 

 especially on open and somewhat dry or sandy piaces, often in great 

 numbers, and it is generally found sitting on the stems, watching for 

 prey and in the well known characteristic oblique position, but it 

 may also be found sitting on the ground. I have once taken it with 

 a Homalomyia scalaris Fabr. as prey. Poulton 1. c. records from 

 England the followång prey: Chrysops cæcutiens L., Dolichopus ungu- 

 latus L., Melanostoma scalare Fabr., Sarcophaga sp., Hylemyia sp., 

 Athysanus sp. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north it goes into Lapland. 



10. Neoitantus Ost. Sack. 



Medium sized to somewhat large species of grey colour. Face 

 narrow, widened downward. Epistomal cailus not large and not 

 reaching much more than half the height of the epistoma. Antennæ 

 inserted somewhat above the middle; the two first joints with long hairs 

 below. The facets in the front part of the eye considerably enlarged. 

 Dorsocentral bristles continued a little over the middle of thorax. 

 The abdominal segments with bristles at the hind margin. Front 

 femora without spine-like bristles, but wdth rather strong bristles on 

 the ventral side. Male genitalia large and more or less swollen; the 

 ventral lamella shining. Female ovipositor compressed, long, the sixth 

 and seventh abdominal segments forming part of it (in the Danish 

 species, in some foreign species this is not the case) ; the lamellæ free. 



Of the genus 1 1 species are known from the palæarctic region ; 

 2 have hitherto been found in Denmark. 



