~ 7 PF =~ nd Sd / 
NEMATOCERA. 79 
are distorted and crumbled ; with thickened mid-rib ; this is enlarged 
_ chiefly on the under surface of the leaf. The sides of the leaves are 
folded over, and they resemble a pod. These galls are pubescent. 
Each cell contains a single larva, reddish-yellow in colour. When 
the larva require to fall to the earth to pupate, the galls, through 
lack of nutriment, split, and the larve escape by this crack. Pupa 
skin silvery white ; three weeks in this state, Fig. 12 (6). 
Imago.—Reddish-yellow ; three pale brown streaks on thorax ; 
halteres white; abdomen brown, hind border fringed with white 
hairs. Legs brown, white pubescence. Wings grayish, violet irides- 
cence, veins brown. Antennz 26-jointed in @, 14-jointedin 92. 
D. linarie, Wtz. 
The larvee live in tufts formed on the tips of the buds of Zinaria 
vulgaris. ‘They pupate in the same place. 
The zmago is yellow ; the antennz brownish-yellow ; thorax brown, 
with three dark bands or stripes. Abdomen brownish-yellow ; legs 
brown, yellowish white underneath. Wings covered by a light 
pubescence, veins yellowish. Halteres pale. Antenne of ¢ 26- 
jointed, very much longer than the body; in 9? the antennz are 
14-jointed, shorter than body. ‘Third segment of oviduct white. 
Tipula pint, Deg. 
Cecid. pint, Mg. 
D. pini, Deg. = C. pini-maritime, Du. 
C. pilosa, Bremi. 
lc. laterella, Zett. 
The larvze of pzvz have rows of fleshy setiferous caruncles along the 
back, with two setiferous tubercles on the last segment. They live 
on Linus sylvestris, This larva is figured by Perris, who evidently 
mistook the dorsal for the ventral surface, as was also done by Dufour. 
The cocoons are resinous structures on the pine-leaves. They 
appear to inhabit almost any species of pine. 
The zmago is dark brown to black ; antennz yellowish, palpi tawny ; 
sides of the thorax and abdomen reddish-brown, becoming brown 
after death. _ Wings pellucid, veins dark, halteres light gray. The 
antennz in the ¢ longer than the body. In the ? 13-jointed, about 
half the length of body, the joints four or five times the length of 
their petioles. Legs dusky, with white or silvery pubescence on the 
under surface. ‘The whole insect may sometimes have a dirty white 
Ta pubescence on it. The oviduct is short, with two small roundish 
i 4 sy valves, light brown to yellow; ¢ organs brown. 
