Bombyliidae. 103 



black hairs at the base. Squamula alaris with a blackish fringe; fre- 

 nulum with long, yellow hairs. Halteres black, the knob snow-white. 



Female. Quite agreeing with the male, only the vertex and frons 

 are broader, the inner eye-margins diverging from the upper corner. 



Length 5,5—12 mm. 



H. morio is rather common in Denmark in suitable localities; 

 Tisvilde, Teglstrup Hegn, Rørvig; in Jutland at Kandestederne south of 

 Skagen and on Læsø. My dates are ^^/e — ^''/t. It occurs on sandy piaces 

 both in woods and outwards, with us especially at or near the shore ; 

 it may be present in great numbers, and it flies in the hottest sun- 

 shine and is often seen sitting on the sand ; I have seen it on flowers 

 of Hieracimn and of Sedum acre. 



Geographical distribution: — One of the most common species 

 all over Europe, down into Italy ; towards the north to middle Scan- 

 dinavia; it occurs also in North America. 



3. Antlipax Fabr. (Scop.). 

 Species of smallish to somewhat large size; the colours are black 

 or, on account of the dense fur, yellow, generally with yellow or 

 whitish, hairy bands on abdomen, and sometimes longitudinal bands 

 on thorax; the wings are clear or more or less blackish or brownish 

 variegated. The genus agrees in all chief respects with Hemipenthes, 

 and I shall only describe it comparatively. Head and mouth parts 

 quite as in Hemipenthes, only the labella generally a little longer, 

 about as long as the basal part of labium. The posterior eye-margin 

 emarginate as in Hemipenthes and with an incipient dividing line. 

 Epistoma sometimes somewhat protruding (fenestratus). Antennæ 

 three- to four-jointed, the first joint cylindrical, the second more or 

 less globular; the third joint various in form, from bulb-like with a 

 long, styliform part to the form of a long, tapering cone; it is generally 

 undivided (when of a bulb-like shape) and the antennæ are thus 

 three-jointed ; but in some species (e. g. afer) an articulation is pre- 

 sent, a somewhat short, apical part being divided ofif as a separate 

 joint, and the antennæ are then four-jointed; in all cases there is 

 a small, thin or bristly part at the apex which, as in Hemipenthes, 

 perhaps answers to a joints Thorax as in Hemipenthes, with more 



^ Meigen (Syst. Beschr. II, 142) savs, Ihat the third joint is: „entweder zwiebel- 

 formig mit verlångertem Griffel welcher . . . noch eine kleine besondere Spizze 

 hat — oder das dritte Glied ist kegelformig mit einem zweigliedrigen Griffel." 

 The first is correct, but the latter not, as the style, when present, is not two- 

 jointed. Scliiner ascribes to Anthrax a two-jointed style. Osten Sacken (Biol. 

 Centrali-Amer. Dipt.) says, that Anthrax has three-jointed antennæ in contrast 



