160 THE SCOTTISH NATURALIST 



straight ; outer portion of fourth vein about two and a half times 

 the penultimate ; calyptra unequal, whitish ; halteres yellow. 

 ? . Entirely shining black, only the fore tibia on the basal half 

 yellow ; frons rather more than one-third the breadth of the 

 head, middle stripe matt black, about one and a half times as 

 broad as the orbits above the antennae, but about equal at the 

 broadest part of the orbits ; orbits grey dusted ; thorax grey- 

 brown dusted, shining ; abdomen shining black, with but little 

 dusting ; fore and mid tibia with the usual bristles ; hind tibia 

 with a row of about four bristles on the antero-ventral surface. 

 (The fore tibiae are said by Stein to have sometimes an extra 

 bristle, in which case the specimen would hardly be separable 

 from scalaris.) 6 to 7 mm. 



Not rare at Bonhill. May to August; Musselburgh and 

 Blairgowrie (A. E. J. Carter). 



6. mom/is, Hal., <* . Very similar in appearance to the foregoing, 



but smaller ; the fore tibia has the hair tuft, and is coloured as 

 in manicata; the fore tarsi have the last four joints dilated 

 and the metatarsi normal ; the thorn on the fore coxa is 

 weaker; the thorn on the mid coxa is rather weaker than in 

 manicata) but is more distinctly bent backward for a greater 

 length; mid femora bristled much as in manicata; mid tibia 

 not tuberculate, but only slightly and gradually thickened on 

 the ventral surface on the apical half; pubescence rather short, 

 longer towards the apex ; the hind femora have on their antero- 

 ventral surface a row of short bristles from base to tip, the last 

 three being rather longer, and on the postero-ventral surface 

 a few hair-like bristles on the basal half; the hind tibia has on 

 the antero-ventral surface a row of equally long bristles, on the 

 antero-dorsal surface a row of long hair-like bristles, and on the 

 postero-ventral surface a few weak bristles on the middle; 

 calyptra unequal, darkened; halteres yellow; wings darkened, 

 third and fourth veins convergent, outer cross-vein nearly 

 straight. 

 $ . I have not met with the $ , but Stein says that it is very 

 similar to manicata, but has the thorax more brownish and the 

 abdomen more pointed, besides being smaller. 4^ to 5^ mm. 

 I have met with two males at Bonhill, 4th May 1907 and 

 30th May 1907. Bred from fungi, Musselburgh, May 1905 

 (A. E. J. Carter). 



7. scalaris, Fab., $. Eyes narrowly separated, frons slightly 



projecting, jowls descending slightly below the eyes ; antennae 



