510 Tachinidae. 



black-haired. Abdomen black, shining, with greyish white pruinose 

 front bands on the three last segments, shifting with irregular dark 

 spots according to view, and leaving the hind margins and a middle 

 line black; abdominal sternites black and shining. Abdomen black- 

 haired; second segment without bristles, third with a pair and fourth 

 and fifth with a row of numerous marginal bristles. Legs black. 

 Wings a little greyish tinged; veins black. Squamulæ white. Halteres 

 dark brown. 



Female. Similar; frons broader than the eye. Palpi rather broad. 



Length 9 to nearly 10 mm. 



H. distinguenda is rare in Denmark, I possess six specimens, 

 three males and three females; Roskilde as pupa in H. hortensis 

 ^2/4, developing soon after (Rosenberg) and Boserup as pupæ in 

 H. sp. on ^/g, developing on '/s — ^^j^ (Kryger). Nielsen mentions 

 (Vidensk. Medd. fra Dansk naturh. Foren. 68, 1917, XIX) a spec- 

 imen of muscaria from Grib Skov, probably also distinguenda] it 

 deposited a larva 7 mm long. Further Stein gives Bornholm as 

 locality, but which of the two species he had taken I do not know. 



Geographical distribution: — Hitherto only known with cer- 

 tainty from Denmark and France. 



Remarks: Villeneuve has shown that there are two nearly 

 related species of Heliobosca, one with frons in male narrow, without 

 orbitals and with elongated claws {distinguenda Villen.), the other 

 with frons in male as broad as in female with two orbitals and claws 

 not elongated {muscaria B. B.); it is therefore at present impossible 

 to interpret muscaria Meig. et auct., only muscaria B. B. is no doubt 

 the species dilTerent from the here described. Pandellé seems to have 

 had both species (c? interoculaire réduit aux '^/g de l'oeil, sans macro- 

 chétes externes: parfois tout a fait pareil a celui de la ?), and as 

 Schiner says the frons is "bei dem Månnchen schmåler", he seems to 

 have had the present species. 



119. Bpicampocepa Macq. 



Species of medium size and dark colour wdth pale pruinosity, 

 and often slightly reddish at the sides of abdomen. Head as broad 

 as thorax, convex behind and a little puffed out below, a little higher 

 than long. Frons medium broad, broadest in female, rather protruding; 

 cheeks broad, and jowls about one fourth of the height of the eye. 

 In both sexes ocellar and inner vertical bristles, in female also outer 



