BRITISH SPECIES OF DIPTEROUS GENUS FANNIA 177 



the tip ; a row of about six long hair-like bristles on the basal 

 two-fifths, and a group of about nine very long curled hair-like 

 bristles on the thickened portion beyond the middle of the 

 postero-ventral surface, a few very short hairs on the tip fifth ; 

 hind tibia with the usual dorsal bristles, two antero-ventral 

 bristles, and no bristle on the antero-dorsal surface; calyptra 

 blackish, the under scale projecting; halteres yellow; wings 

 darkened along the fore half, third and fourth veins nearly 

 parallel, outer cross-vein nearly straight, last portion of fourth 

 vein about three times the penultimate. ? unknown. 4 mm. 

 One $ at Aberfoyle, 30th June 1904 (A. E. J. Carter). 



11. armata^ Mg., <J . Black; eyes large, frons slightly projecting, 

 seen from in front with centre stripe grey dusted ; thorax black, 

 brown-grey dusted; abdomen dull black, rather broad and 

 short ; legs black, fore-knees with a small yellowish mark ; 

 fore tibia with a few long hairs at the tip on the postero- 

 ventral surface; mid femora swollen for over two-thirds from 

 the base, thickest at the end of the swelling; antero-ventral 

 surface with a row of about nine rather long bristles which 

 decrease in length towards the swollen part, which bears a row 

 of about the same number of very short and strong bristles, 

 the apical unthickened portion of femora bare; postero-ventral 

 surface with longer, more numerous and weaker bristles, three 

 or four on the constricted portion ; mid tibia distinctly thickened 

 from before the middle on the ventral surface, the pubescence, 

 which is very long and erect confined to the thickened portion ; 

 antero-dorsal bristles three in number, postero-dorsal two 

 weaker ; mid metatarsi with a blunt thorn-like fasciculus of four 

 very short thick-set bristles, at the base of the ventral surface ; 

 hind femora long and rather bent ; antero-dorsal surface with a 

 row of about ten bristles on the apical half, the last six being 

 very much stronger than the first four ; hind tibia with a row 

 of very long hairs, from near the base to the tip, on the antero- 

 ventral surface, a row on the postero-ventral surface of some- 

 what similar hairs, beginning later, of which the apical two or 

 three are longer; dorsal bristles very long, the others indis- 

 tinguishable ; wings darkened, third and fourth veins hardly 

 convergent, outer cross-vein nearly straight; calyptra whitish, 

 unequal; halteres yellow. 

 9 • Grey-black ; frons about one-third the breadth of head, 

 parallel-sided, orbits grey dusted, at their broadest part as broad 

 as the black middle stripe ; lower fronto-orbital bristle nearer 

 8 z 



