448 Syrphidae. 



species placed in Eurinomyia, and this had Girschner evidently seen 

 in establishing Parhelophilus, but yet I think a division is at present 

 not possible and I therefore follow Becicer in the limiting of the sub- 

 genera. — For the Danish species we have then the follov^ing sub- 

 genera : 



1. Third antennal joint higher than long 

 with a sharp upper angle; abdominal 



spots longitudinal Liops Rond. (vittatus). 



— Third antennal joint not higher than 

 long, roundish; abdominal spots more 



or less transverse 2. 



2. Epistoma with a distinct, bare middle 

 stripe; wings with the stigma elongate 

 and an indistinct or no stigmatical cross- 

 vein; thoracai squamula hairy above on 



a part near scutellum Helophilus s. str. {trivittatus, hy- 



hridiis, affiniS; pendultis). 



— Epistoma without bare middle stripe, 

 at most a bare spot at the mouth edge ; 

 wing-stigma only consisting of a cross- 



vein; thoracai squamula not hairy above Eurinomyia Big. {frutetorum, ver- 



sicolor^ consimilis, lumdatuSy trans- 

 fugus, lineatus). 



, Tahle of Species. 



1. Third antennal joint distinctly higher than long with a 



sharp upper angle; abdomen with longitudinal spots ... 11. vittatus. 



— Third antennal joint not higher than long, roundish; ab- 

 dominal spots more or less transverse 2. 



2. Epistoma with a distinct, black or yehow, bare middle 

 stripe ; antennæ black or blackish ; stigma elongated, with 

 an indistinct or no cross-vein; thoracai squamula hairy 



above on a part near scutellum ; larger species 3. 



— Epistoma without bare middle stripe, at most bare near 

 the mouth edge; antennæ orange or brownish; stigma 

 consisting only of a cross-vein; thoracai squamula not 



hairy above ; moderate or smaller species 6. 



3. Epistomal stripe yellow 1 . trivittatus. 



— Epistomal stripe black 4. 



4. Hind tibiæ yellow on the basal two thirds 4. pendulus. 



— Hind tibiæ yellow on only the basal third or fourth 5. 



5. Front tarsi black; abdominal segments with orange hind 



margins 2. hybridus. 



— Front tarsi yellow on the basal joints or more; abdominal 

 segments without orange hind margins 3. affinis. 



6. Somewhat broad species of moderate size with the lines 



on thorax rather broad 7. 



