88 ANNALS OF SCOTTISH NATURAL HISTORY 



to the larger bristles which may be present ; costa to about the middle 

 of wing ; second vein present ; first thin vein nearly straight at base ; 

 anal protuberance long and finger-like. Type : concinna, Mg. 



Table of Species. 



1. (4.) Hind tibiae with very short bristles. 



2. (3.) Antennas normal ; hind tibiae with four small bristles on the 



front, or under side. Smaller species. concinna, Mg. 



3. (2.) Antennae in 6* enlarged, in ? normal; hind tibiae with 



three or four bristles on the outer side besides the four 

 underneath. Larger and darker species. 



crassicornis, Mg. 



4. (i.) Hind tibiae with the usual strong bristles. 



5. (6.) Thin veins end at margin of wing; halteres black; hind 



tibiae with two bristles. abdominalis, Flu. 



6. (5.) Thin veins abbreviated ; halteres pale ; hind tibiae with three 



bristles. abbreviate v. Ros. 



concinna, Mg., and crassicornis, Mg., seem to be universally 

 common. 



abdominalis, Fin., not uncommon about carrion at 



Bonhill. Occasionally met with by sweeping. Inch 



Connachin, Loch Lomond, 4th September 1909. The 



9 has a red abdomen, but the 6* has the whole body 



black. 



abbreviata, v. Ros. has only been recorded from England 

 so far. 



TRUPHEONEURA, Mall. 



Generic description: Antennae sometimes enlarged, arista dorsal ; 

 frontal bristles in two horizontal rows of four each ; post-antennal 

 bristles reclinate ; palpi and proboscis sometimes much enlarged ; 

 costa to about middle of wing ; second vein present ; first thin 

 vein bent at base ; fourth thin vein sometimes abruptly broken off 

 short of the margin of the wing, never distinctly reaching it like the 

 others ; tibial armature weak, sometimes the hind tibiae are without 

 the bristles ; genital armature generally very prominent, chitinous, 

 and furnished with lamellae. Type, perennis, Mg. 



Table of Species. 



1. (2.) (3.) Palpi very large, at least in 6* , curving round in front 



of head. palposa, Zett. 



2. (3.) (i.) Palpi, narrow, straight and cylindrical, trinervis, Beck. 



3. (i.) (2.) Palpi broad and leaf like (normal). 



4. (9.) (12.) Scutellum with only two bristles. 



