Syrphus. 307 



from abbé O. Parent in Arras determined as latifasciatus, but they 

 were only the common variety of corollae with united spots. — 

 Under lunulatus I have shown that the present species cannot be 

 pinastri De Geer. 



S. corollae is very common in Denmark and occurs on various 

 flowers on nearly all localities all over the country, generally in great 

 numbers. My dates are "'Ir, — ^^/i*; it is most common in late summer 

 and autumn. I have taken it in copula on ^^h. The larva I have 

 taken among Aphides on Prunus in a garden on -^/e, it developed on 

 2=^/6 ; Mr. Kryger took a pupa at Damhusmosen on ^Is^ it developed on 

 ''/s. — Verrall records that he does not remember to have seen this 

 species hovering, I have, however often seen it so, but generally about 

 the flowers, not high in the air. 



Geographical distribution : — Very widely distributed, through all 

 Europe, towards the north to northern Sweden, and in Finland; 

 further in northern Africa, on the Ganaries and Madeira, and in Asia 

 down to Japan; it occurs perhaps also in North America. 



18. S. luniger Meig. 



1822. Meig. Sysl. Beschr. III. 300, 40. — 1843. Zett. Dipt. Scand. Il, 

 718,21 (Scaeva). — 1862. Schin. F. A. I, 306. — 1901. Verr. Brit. Fl. 

 VIII, 385. 20, fig. 298. — 1907. Kat. palåarkt. Dipt. III, 66. — S. nigri- 

 femoratus Macq. 1827. Soc. Se. Lille, 1827, 241, 26 et 1834. Suit å Buff. 

 I, 540, 21. — 1838. Meig. Syst. Beschr. VII, 132, 102. — Scaeva arcuata 

 Fall. p. p. 1817. Dipt. Suec. Syrph. 42. 



Male. Vertex elongated triangular, fuUy as long as the eye-suture. 

 Frons yellow, sometimes with brownish or blackish spots above the 

 antennæ; epistoma yellow, the front mouth 

 edge black and the central knob brown or 

 blackish. Jowls black, grey pruinose. Vertex 

 and frons black-haired, the former with yellow 

 hairs behind; epistoma yellow-haired, above, 

 at the sides of the antennæ, black hairs. Occi- 

 put greyish pruinose, with white hairs, yellow 

 upwards, above a row of black hairs, over- 

 hanging the eyes ; the occiput is a little puffed 

 out along the upper eye-margin. Eyes bare. 

 Antennæ blackish or brown, paler below, third ^^^^ ^/| |^^.^^^ ^ 

 joint elongated oval, considerably longer than 



the two basal together; arista scarcely as long as the antennæ. Thorax 

 æneous, shining, often bluish or more brassy, or sometimes a little 

 purplish; postalar calli slightly yellowish; the thorax is clothed with 



20* 



