200 Syrphidae. 



on the middle Irochanters; femora haired as usual, the hairs pale, 

 only dark at the apex of front fernora; middle femora with bristly 

 hairs as in manicatus ; front tibiæ with long, dark hairs on the postero- 

 dorsal side in the apical half, middle tibiæ with some few and hind 

 tibiæ with rather long, dark hairs on the antero-dorsal side in and 

 somewhat above the middle, these hairs much denser and more 

 numerous than in manicatus; front metatarsus ciliated on the posterior 

 margin, with a few black hairs in the middle; hind metatarsus swollen 

 as in manicatus. Wings hyaline or nearly so. Squamulæ and fringe 

 Avhitish. Halteres pale yellow. 



Female. Frons slightly pruinose, dark-haired, only yellow-haired 

 above the antennæ. Thorax shining, short-haired. Abdomen as in 

 the male but the basal spots larger and less triangular; fifth segment 

 with distinct spots. Legs paler than in the male, anterior tibiæ with 

 faint or almost disappearing rings, anterior tarsi pale with only third 

 and fourth joints brownish; hind metatarsi a little thickened. 



Length 8 mm. 



This species may be known from manicatus by the shining thorax, 

 the less produced epistoma and the smaller abdominal spots; in the 

 male also the front tarsi are a little dlfferent both in shape and colour, 

 the middle tarsi paler and the long hairs above hind tibiæ are much 

 more numerous and denser; the female has the anterior tibiæ and 

 tarsi much paler. 



F. tarsalis is very rare in Denmark, we have only five specimens. 

 three males and two females, all from earlier time; Charlottenlund, 

 Ordrup Mose (Stæger) and Horsens in Jutland (O. G. Jensen) ; the 

 dates are in May (^^/b— 29/5). 



Geographical distribution : — Middle Europe down into Styria and 

 xMoravia: it is not known north of Denmark but occurs in England; 

 it is upon the whole no common species. 



3. P. peltatus Meig. 



1822. Meig. Syst. Beschr. III, 334, 89, Tab. XXX, Fig. 31—32 (Sijr- 

 2)hus). — 1838. Zett. Ins. Lapp. 606, 30 et 1843. Dipt. Scand. II, 747, 50 

 (Scaeva). — 1843. Stæg. Naturh. Tidsskr. IV, 322. — 1862. Schin. F. A. I, 

 295. — 1901. Verr. Brit. Fl. VIII, 274, 5, figs. 237—238. — 1907. Kat. 

 palåarkt. Dipt. III, 45. — Scaeva albimana p. p. 1817. Fall. Dipt. Suec. 

 Syrph. 46. — Scaeva rostrata Zett. 1838. Ins. Lapp. 607, 34 et 1843. Dipt. 

 Scand. II, 746, 49 et 1849. VIII, 3144, 49. — Melanostoma octomacnlata 

 1862. Schin. F. A. I, 292. 



Male. Frons and epistoma æneous green, somewhat brownish 

 yellow pruinose; vertex with yellow hairs behind, black anteriorly; 

 frons black-haired. Epistoma with erect hairs, dark above, yellow 



i 



