328 Syrphidae. 



above the hind tibiæ. Wings a little tinged. Squamulæ and fringes 

 somewhat dirty whitish. Balteres whitish yellow, 



Female. Vertex somewhat broad, together with the frons black, 

 shining, just above the antennæ narrowly yellow; there are narrow 

 but elongated side dust spots, connected downwards with the dust 

 on epistoma; the hairs yellow at the sides, brown along the middle; 

 epistoma quite yellow, whitish pruinose, the central knob bare. Jowls 

 somewhat yellowish but grey pruinose. Antennæ considerably larger 

 than in the male, third joint roundly square. Thorax a little yellowish 

 at the sides and on the humeri, and meso- ptero- and sternopleura 

 with yellowish spots. Abdomen as in the male, but the basal spots 

 larger, triangular, the other likewise triangular but more transverse, 

 going nearer to each other in the middle, and a similar pair of spots 

 at the basal corners of fifth segment. Legs paler than in the male, 

 anterior femora only with a slight dark spot below at base, hind 

 femora and tibiæ with a broad, dark ring about the middle, 



Length fuUy 7 to about 9 mm. 



S. triangulifer is very rare in Denmark, only three specimens, two 

 males and one female, are known; of the males one was taken on 

 a field at Lohals on Langeland on ""'ii 1913 and the other in Egebæks 

 Vang in low herbage at a streamlet on ^*^/7 1915 (the author); the 

 female is from earlier time without particular locality (perhaps not 

 Danish). 



Geographieal distribution: — Northern and middle Europe down 

 into Austria and Bohemia, and also recorded from Spain; towards 

 the north to middle Sweden, and in Finland. 



28, S. punctulatus Verr. 



1873. Verr. Entom. Month. Mag. IX, 254 et 1901. Brit. Fl. VIII. 404, 

 28. — 1907. Kat. palåarkt. Dipt. III, 69. 



Male. Vertex triangular, almost not elongate; frons and epistoma 

 rather broad, increasing downwards. Frons somewhat æneous, brownish 

 pruinose, black above the antennæ. Epistoma obscurely yellow, dark 

 yellowish pruinose, with a somewhat indefinite, broad, blackish middle 

 stripe; the central knob shining; the mouth edge and lower side parts 

 indeflnitely blackish. Jowls broad, a litttle descending, blackish. Vertex, 

 frons and epistoma with black hairs, the latter with some yellow 

 hairs below, Occiput grey pruinose, the hairs pale below, yellow up- 

 wards, above a row of long, black, overhanging hairs. Eyes distinctly 

 hairy with pale hairs, but they are short and not dense; they are 

 especially obvious on the upper part of the eye, Antennæ short, third 



