80 AN ACCOUNT OF BRITISH FLIES. 
D. callida, Wtz. 
The larvze live in the seed-capsules of various poppies, and are said 
to be found in company with Cecidomyia papaveris, according to 
Walker. Verrall, however, only considers Papaveris a reputed 
British species. 
The zmago of this ‘‘ Poppy Gnat” is tawny ; the thorax has three 
dark brown stripes, pectus shining; antennz brown, base yellow. 
Wings brown; veins also brown. Transverse veinlet joining the first 
longitudinal beyond its middle. Legs brown, moderately long. In 
the ¢ the antennz are very long, nearly twice the length of the body, 
the double joints as long as their petioles. In 2? antennze are shorter 
than the body ; joints and petioles of equal length. Oviduct short, 
and composed of two lamelle. The wings have dark violet 
markings, which are especially characterized by two rows and a 
pointed spot. 
D. centralis, Wtz. = Cec. annulipes, Mg. 
The life history of this gnat seems uncertain ; if it is the same as 
Cecidomyia annulipes of Meigen* it inhabits beech-trees, but the 
synonym seems doubtful. 
Centralis is described by Schiner as follows: ‘ Reddish-yellow 
thorax, with three chestnut-brown streaks ; the hairs of the whole 
body pale reddish-yellow. Antenne brown, much shorter than 
body ; joints six times length of petioles, the end joint with bud-like 
protuberance, Legs whitish. Wings clear as glass, with three blue- 
violet cross rows and similar spots ; fifth venation starting violet, bent 
down in a right angle to the hind margin ; the third joining the edge 
rather behind the wing-point.” 
I believe Meigen’s description of avnulipes is the same as that 
given by Walker under Cenfra/is, viz.: “ 9 tawny, Antennz brown, a 
little more than half the length of body ; joints six times the length 
of their petioles. Thorax with three chestnut-brown stripes. Pectus 
blackish. Wings limpid, with three brown bands; veins brown ; 
transverse veinlet situated before the middle of the sub-costal (first 
longitudinal vein), anal (third and fourth) and its second branch 
forming an almost right angle. Halteres white. Oviduct as long as 
the abdomen, with two somewhat rounded valves. Legs whitish, 
with black bands.” + 
* Syst. Beschr., vi., 1130, p. 268 2. Schiner evidently does not consider them 
the same species. 
+ Walker,’Ins. Brit., viii., p. 115. 
