338 Syrphidae. 



bably down into Austria and Hungary; towards the north to northern 

 Sweden, and i Finland, but everywhere rare ; it is also recorded from 

 Iceland. 



20. SpliaePOpllOPia St. Farg. et Serv. 



Species of medium size and of unusual long and slender shape; 

 the colour black or æneous with yellow stripes on thorax and markings 

 on pleura, and with rather varied but extensive yellow bands or pairs 

 of spots on abdomen. Head somewhat semiglobular, broader than 

 thorax and a little broader than high; it is excavated behind. Eyes 

 touching in the male, separated in the female; frons in the male with 

 the upper angle rectangular or obtuse. Eyes bare; the upper facets 

 in the male slightly enlarged. Antennæ inserted above the middle; 

 they are somewhat short, third joint short oval, arista inserted near 

 its base, apparently bare. Epistoma not broad, very slightly hollowed 

 below the antennæ and a little keel-shaped; the central knob small, 

 but the whole lower part of epistoma together with the knob rather 

 protruding; the front mouth edge only slightly retreating, and also 

 the lateral angles very little retreating, the front mouth edge curved 

 somewhat deeply upwards. The epistoma is yellow, sometimes with 

 a more or less distinct, dark middle stripe, and it has inconspicuous 

 hairs. Jowls narrow, not descending, separated from epistoma by a 

 furrow. The oral aperture narrow, but on account of the protruding 

 epistoma somewhat long. Oral cone well developed, rather long; pro- 

 boscis not long, but when the oral cone and proboscis are stretched 

 quite out, the length of them together is considerable. Glypeus elong- 

 ated horse-shoe-shaped ; the mouth parts mainly as in Syrphus, but 

 longer and more slender; labrum and hypopharynx somewhat long, 

 considerably longer than in Syrphus, of the usual shape ; maxillæ with 

 a knife-shaped lacinia and a thread-like palpus, a little longer than 

 the lacinia and with some bristles, for the rest lacinia and palpus as 

 in Syrphus; labium somewhat slender, relatively longer than in Syr- 

 phus, the basal part and the elongated oval labella of equal length, 

 the former not incised at the ends. Thorax considerably longer than 

 broad, rectangular; it has a continuous or interrupted yellow line at 

 each side margin, and there are extended yellow spots on pleura; 

 metapleura with dense, but quite short hairs. Scutellum yellow, with- 

 out fringe below the margin. Thorax and scutellum without bristles. 

 Abdomen long and narrow, with parallel sides or even clavate. In 

 the male there are five not transformed segments, the lirst small, the 

 others long, as long as or longer than broad, also the fifth long; this 



