508 Tachinidae. 



dense bristly hairs. Upper forceps red, a little broad at base, atte- 

 nuated into a long, spine-shaped part; arms of lower forceps covered 

 basally by a scale-like piece, partly separated off from the side of the 

 hypopygium, the arms broad, attenuating, with a curved posterior 

 and a straight anterior margin, a little pointed at apex; upper forceps 

 with upwards directed hairs on base, lower with strong hairs on outer 

 surface; upper and lower forceps of same length. Legs black. Wings 

 clear or nearly; veins dark brown, medial cross- vein somewhat 

 clouded, and sometimes also apical cross- vein a little seamed; posterior 

 cross-vein sinuate. Squamulæ whitish. Halteres yellowish brown. 



Female. Similar; frons considerably broader than the eye. 

 Abdomen without red spots. 



Length 9 — 12 mm. 



M. puparum is not common in Denmark; it has been taken in 

 great numbers in Charlottenlund many years ago but besides I know 

 only one specimen from Strandby on Lolland, taken in May. It gener- 

 ally sits on tree-stems. The species is recorded as bred from Panolis 

 griseovariegata, but it seems to be doubtful. 



Geographical distribution: — Europe and also known from Japan; 

 towards the north to southern Sweden. 



118. Helicobosca Bezzi. 



Medium sized, greyish pruinose species, rather like a Sarco- 

 phaga. Head not or almost not broader than thorax, convex behind 

 and somewhat puffed out below, higher than long. Frons somewhat 

 narrow in male, broad in female (distinguenda), or broad and about 

 equal in both sexes {muscaria}, somewhat protruding. Jowls nearly 

 one third of the height of the eye. In both sexes ocellar and inner, 

 but no outer vertical bristles, and in muscaria also two orbital bristles, 

 while in distinguenda only the female has orbital bristles, the male 

 none. Large postocellar and occipital bristles. Postocular bristles 

 long above, with black hairs behind. Frontal bristles reaching about 

 to end of second antennal joint, the uppermost directed outwards 

 in both sexes. Cheeks with a row of small hairs and below with strong 

 bristles. Vibrissæ not ascending. Eyes bare. Epistoma retreating, 

 but with the lower part reflected and protruding. Proboscis of medium 

 length; palpi long, a little dilated outwards, especially in female. 

 Antennæ inserted well above middle of the eye; third joint about 

 twice as long as second; arista short-hairy in basal half, second joint 



