Empididae. 11 



two pulvilli and a small, narrow, lobe-shaped empodium, bearing 

 bristles and terminating with a longer bristle. The wings are some- 

 what long, the cubital vein is unforked and thus one cubital cell; the 

 discai vein likewise unforked, thus three posterior cells; a discai cell 



Fig. 2. Wing of H. femorattis. 



present, sending two veins to the wing-margin, the lower being the 

 upper branch of the postical vein which closes the discai cell below; 

 the anal vein very weak, reaching the margin, the anal cell longer 

 than the second basal cell. Stigma present. Axillary lobe somewhat dev- 

 eloped, not large. Alula not developed ; alar squamula with long hairs 

 forming a fan. 



So far as I am aware the developmental stages to this genus are 

 not known; probably they live in the earth. 



The species of Hijhos are somewhat easily recognised by their 

 slender, somewhat curved abdomen; they have a rather heavy flight. 

 They occur in bushes and in herbage on the ground in woods on 

 humid and somewhat shaded piaces; they are very often seen sitting 

 just on the points of the leaves. All species occur late in summer 

 and autumn, my earliest date is ^^/r, and this is exceptionally early, 

 and I have taken them to the end of September. They are evidently 

 carnivorous ; I have often taken them with prey, generally small Diptera ; 

 the prey of the single species is recorded below. 



Of the genus 9 species are recorded from the palæarctic region, 

 but as will be seen below I think there are in reality only 4, three 

 of which belong to Europe, all three also occurring in Denmark. 



Tahle of Species. 



1. Anterior legs reddish; anterior tibiæ and tarsi in the 



male with long hairs 2. femoratus. 



— All legs dark 2. 



2. Notopleural, postalar and scutellar marginal bristles black; 

 in the male anterior tibiæ and tarsi with long hairs, hind 



femora strongly thickened and genitalia small 1. grossipes. 



— Notopleural, postalar and scutellar marginal bristles 

 yellow; in the male anterior tibiæ and tarsi without long 

 hairs, hind femora slightly thickened and genitalia much 



swollen 3. cnliciformis. 



