109 
ain^ and in perfect condition. I have not previously heard of the occur- 
M.sutoria the northern division of the island; though, some five^and- 
ears ac^o, I saw a Hve specimen of M. dentator. Fab., in Glasgow. North 
. timber stored at Port Dundas sufficiently accounted for its appearance, 
eantime, I presume M. sutor is entitled to all the immunities of a free-born 
Egbert Hislop, Blair Bank, Falkirk, m September, 1869. 
idence as to the British origin of this specimen would be afforded by proof 
timber used at the coal-pit mouth was grown in this country, and not 
..—Eds.] 
tv^e of lassus cruentatus. -Thi. rare Homopterous insect has occurred to 
.g the present month at Witherslack, about four miles from Grange, where 
previously met with it, also a mile or two fm^ther on towards Mdntho:-p. 
ad on Te^icrmm scorodonia in the pupal as well as the perfect state. The 
oes where I have seen the insect have one feature in common, namely, the 
, of the yew-tree ; this I mention on account of a question that was asked 
ecting its habitat, and I cannot but think there is something in it, although 
n vain to beat the yews.-BENJAMiN Cooke, 119, Stockport Eoad, Man- 
ZOth Aug^l.st, 1869. 
the halits of Cecidomyia. salicina, Schrh., marginemtorquens, Bremi, and 
Sc/irfc-The reddish-yellow larvffi of Cecidomyia salicina, Schrank, are now 
sad havoc in the tops of the leading shoots of Salix alba in the hedge rowa 
neighbourhood. 
eir attacks cause the young terminal leaflets of the shoots to wather and to 
small bud-shaped nidus, within which the larva,, to the number of three to 
r so, pass their metamorphoses. The pupal state lasts from ten to fourteen 
Wbenthe perfect insects have left the shoots, the nidi rapidly wither away, 
, brown, and at last drop at the sHghtest movement of the branch. Their 
\e must exercise a check of considerable influence upon the growth of the 
of the year, but probably a beneficial result accrues to the plant as we 1, 
sap which would have served to push the young shoots on, will help to 
bhen the old wood instead. _ -,..-, 
at as in the plantation of hedges an equal growth is generally axmed at, the 
rary mischief done by these midges cannot but annoy the propnetor, as .t 
:o the hedges a straggling look, caused by the remaining behind of so many 
shoots and their unsightly appearance. 
marginemtorciuens.-The close dependence of many insects upon vegetation, 
.0 nicety and care displayed by the laying females, in the selection of certain 
dual plants in preference to others of the same species have, at all times, 
i to naturalists an inexhaustible field of observation. 
^ith gall-makers of various orders, I have hitherto found it to be a prevailing 
that so far as hgneous plants are concerned, stunted shrubs or trees, or else 
as are impoverished by the effects of external injuries or old age, are chosen 
.e deposition of eggs in preference to sound healthy ones. Plants growmg m 
3S are also more liable to be attacked than isolated ones. 
