Eumerus. 539 



and at the outskirts of woods on various flowers, especially I have 

 taken it on Compositæ. 



Geographical distribution: — Europa down into Spain and Italy; 

 tovvards the north to middle Svveden, and in Finland. 



3. E. ornatus Meig. 



1822. Meig. Syst. Beschr. III, 205, 4. - 1843. Zett. Dipt. Scand. II, 865, 4. 

 — 1855. Loew, Verh. zool. bot. Geseli. Wien, V, 694. — 1862. Schin. F. A. 

 I, 362. — 1901. Verr. Brit. Fl. VIII, 620, 2, fig. 423. — 1907. Kat. palåarkt. 

 Dipt. III, 135. 



Male. Head rather long and of a characteristic shape, as it is 

 flattened above; the vertex is long, almost as long as the head but 

 very narrow : eyes touching for a long distance and the frons very 

 small ; on account of the long vertex and eye-suture the frons is pushed 

 downwards and the antennæ inserted considerably below the middle, 

 and the epistoma is directed backwards to- 

 wards the lower side of the head. Vertex 

 black, shining, the ocelli lying quite anteriorly; 

 it is yellow-haired but anteriorly, at the ocelli 

 black-haired ; frons and epistoma v^hite pruinose, 

 the former with slight, the latter witli longish, 

 dense, white hairs. The eyes distinctly brownish- 

 hairy, the facets on the front side rather much 

 enlarged. Occiput grey pruinose below along 

 the eye-margin, above æneous black, puffed 

 out; the hairs whitish below, yellow above, 

 very short on the middle. Antennæ of medium p- jg^ ^^^^ ^^ 



size, third joint almost square, angulated below ; ^_ ornatus d" 



they are black, third joint blackish brown; 



arista somewhat long. inserted at some distance from the base, near 

 the upper apical corner; the bristles below the apex of both the basal 

 antennal joints long. Thorax dark æneous, finely punctate, shining; 

 it has two narrow, grey lines, abbreviated behind the middle; it is 

 clothed with longish hairs, which are mainly black, but yellowish in 

 front and behind. Scutellum æneous, marginale and with the margin 

 serrulated; it has longish, yellow hairs. Pleura ,with yellow, above 

 black hairs. Abdomen black or bluish black, somewhat coarsely punc- 

 tate and moderately shining, at the sides æneous, coppery or purplish 

 and more shining; it has three pairs of distinct, whitish or bluish 

 white pruinose lunules or oblique bands, which are somewhat im- 

 pressed; abdomen is clothed with short. black hairs, whitish only on 

 the lunules; at the sides they are slightly longer and yellow and they 



