Asilidae. 87 



of the posterior tiblæ except the posterior side of the hind tibiæ; 

 finally there are a few at the apex of the posterior femora. The 

 spine-Uke bristles are all black, and those on the tarsi are likewise 

 black. Wings yellowish, the apex and the posterior margin broadly 

 greyish fumigated as in arthriticus so that only the base and a nar- 

 row middle part are hyaline; the inner boundary of the fumigation 

 distinct; veins brown. Balteres yellow. 



Female. With exception of the genital differences quite agreeing 

 with the male. 



Length 10—12 mm. 



This species is easily distinguished from arthriticus by the ferru- 

 gineous legs; it is moreover smaller and much less bristly, also the 

 colouring of the thorax is different. 



E. cingulatus is very rare in Denmark, only one specimeri, a male, 

 is known; it is found in the coUection of Westermann and is labelled 

 „Sealand, July 1819." — Poulton 1. c. records from England as prey 

 for this species: Simaethis fabriciana L. and Mnsca corvina Fabr. 



Geographical distribution: — All Europe; towards the north to 

 middle Scandinavia. 



Bombyliidae. 



Head as broad as, or narrower than, thorax, nearly globular or 

 shorter and broader than high; behind it is either very deeply 

 excavated, or it is slightly arched. Jowls small, generally only slightly 

 or not at all descending below the eyes. Antennæ inserted near to 

 each other, or more distant; placed at or somewhat above the 

 middle; they are short or somewhat longer, consisting of three to 

 five joints; the tvvo basal joints more or less short or the tirst 

 longer; the third is the longest, of various shape, cylindrical, or 

 somewhat compressed, or bulb-like tapering to a styliform part; 

 at its apex there may be a more or less distinct, small, one- 

 or two-jointed style sometimes with a pencil of hairs at the 

 apex. Eyes large , sometimes separated in both sexes but most 

 in the female, or touching in the male, separated in the female, or 

 in rare cases touching in both sexes (Systrojms) ; sometimes the upper 

 facets in the male slightly larger than in the female. Three ocelli 

 present. The mouth aperture large; there is a well developed oral 

 cone on the front side of which lies the clypeus represented by 

 two chitinous lists, or often horseshoe-shaped ; on the posterior side 

 of the oral cone lie the stipites of the maxillæ. Proboscis varies much 



