MICRODON. 135 
140, Microdon villosus, sp. n. 
. Length of the body 1 12 mmn., of the antennae 4 mm. 
k ‘rather hairy species, readily distinguishable owing to the 
structure and mode of carr lage of its antenne. 
Head very broad, distinctly broader than the thorax, bronze- 
black, finely punctate, mode rately shining, clothed with rather 
long, erect, yellowish hairs, which on the face show golden re- 
flexions; frons very broad for a male, the shining black equally 
Suechiad eves being rather small, and without distinct prominent 
angles towards the middle of frons; the transverse frontal furrow 
is, however, well marked; ocelli rather far apart, arranged in an 
equilateral triangle; face gently convex, as broad as the frons, 
becoming broader below; it is black in the middle, with a broad 
vellow border on each side; jowls with a small, broad, but shallow 
pit on each side; opening of buceal cavity small, the proboscis 
scarcely projecting. Antenne erect, entirely black, the first joint 
shining and almost bare; second joint very small; third dull, 
cued almost arched, ‘hae kened towards the middle, about four 

Fig. 24.—Microdon villosus, sp.n. Head of male. X10. 
and a half times as long as the first ; arista situate at base of third 
segment, of a dark yellow ish colour, thin, about half the length of 
the third joint. Thorax shining neous, very finely punctate : 
clothed on dorsum with rather long and dense bright reddish hair, 
which becomes yellowish on the pleure e, the hind part of which is, 
however, bare as usual.  Scutellum mail, semicircular, shining 
black, clothed with long yellowish hair, with an unarmed hind 
border. Squamule w tice with yellow borders and rather long 
white fringes; halteres pale yellowish. Abdomen at base broader 
than the ee attenuated behind, conical, the second segment de- 
pressed in the middle, but not produced at the sides ; thir d segment 
about as long as the second, fourth two and a half times the length 
of the third; all the sutures are distinet; the abdomen is black, dull, 
dark yellowish in the middle at the base, with a few rather long 
yellowish hairs on the sides at the base and on the hind border of 
the basal segments; on each side of the second and third segments 
there are two indistinet oblique stripes of yellowish pubescence ; 
