378 Syrphidae. 



posterior side of hind femora and partly on hind tibiæ darker; hind 

 femora with rows of black, spine-like bristles below. Wings more or 

 less but as a rule slightly tinged, the cross-veins dark seamed and 

 below the stigma a slight cloud stretches downwards; the upper 

 marginal cross-vein straight with the angle below rectangular. Squa- 

 mulæ and fringes whitish. Balteres whitish yellow. 



Female. Frons and epistoma a little broader than in the male. 

 Third joint of antennæ longer. Abdomen with the second segment 

 abruptly dilated after themiddle; it has the first band always divided 

 into spots, and the second either with a large, quadratic incision in 

 the middle or divided into spots; fourth and fifth segments more or 

 less æneous. 



Length 5,3 to fully 6 mm. 



N. podagrica is a very cornmon species in Denmark and occurs 

 all over the country; it is present during the whole season, my dates 

 are ^^/s — ^'Vo. It occurs both on fieids, in woods and fens, and also 

 in gardens, generally in great numbers, flying in low herbage. I have 

 taken it in copula on ^*'/6, ^^/s and ^^/o. 



Geographical distribution: — Europe down into Spain and Italy, 

 and on Madeira; towards the north to northern Sweden but here rare, 

 and in Finland. 



Remarks: In the coUection of Tonder Lund and Sehestedt there 

 are two specimens, both females, labelled Merodon podagricus, they 

 both belong to the present species, but I do not know whether they 

 are types; Fabricius says "Habitat in Daniæ floribus", but he does 

 not refer to the said coUection. 



2. N. fioralis Meig. 



1822. Meig. Syst. Beschr. III, 188, 3 (Ascia). — 1843. Zett. Dipt. 

 Scand. II, 886, 2 et 1849. VIII, 3193, 2 et 1859. XIII, 6041, 2 (Ascia). — 

 1862. Schin. F. A. I, 321 (Ascia). - 1901. Verr. Brit. FL VIII, 472, 3 (Ascia). 



— 1907. Kat. palåarkt. Dipt. III, 85. — A. hastata Meig. 1822. 1. c. III, 189, 5. 



— 1843. Zett. 1. c. II, 890, obs. — A. quadripunctata Meig. 1. c. III, 189,6. 



— 1843. Zett. 1. c. II, 887, 4 et 1855. XII, 4676, 4 et 1859. XIII. 6042, 4. 



— 1862. Schin. F. A. I, 321. — A. nitidula Meig. 1822. 1. c. III, 191, 8. 



— 1843. Zett. I. c. II, 889, 6. — 1862. Schin. F. A. 1, 322. — A. aenea 

 Meig. 1822. 1. c. III, 191,9. — 1862. Schin. F. A. I, 322. — A.Ufasciata 

 Zett. 1838. Ins. Lapp. 583, 4. 



Male. This species is rather similar to podagrica. Antennæ with 

 the third joint shorter about one and a half times longer than broad; 

 arista a little longer than third joint. Thorax less punctate, more 

 shining and with the hairs darker. Abdomen broader at the base and 

 less clubbed than in podagrica, the second segment narrowest just at 



