Introduction . 
XXXI 
Sub-section (/3) of Section II. 
ANIMALS INJURIOUS TO ORNAMENTAL PLANTS. 
Protozoa to Ncmatoda ...None. , , , .. , 
nhffitonoda . Earthworms often do harm to potted plants. 
fimstacea ' "" ..... . Land isopods are destructive, especially under glass. 
Arachnida Many acari cause harm ( Tetranychus , Bryobia). , 
Hexanoda Most orders of insects are injurious (carnation maggot, 
1 narcissus fly ( Merodon cqucstris) , scales {Clnonasjns rosx, 
Lecanium olex), thrips ( Tliripidx ), mealy bug (Dac- 
tylobius ), rose sawflies ( Hylotoma rosx , Blennocampa 
misilla). 
Diplopoda Millepedes (JulicUe) often attack ornamental plants, 
especially bulbs. 
Mollusca Snails and slugs ( Helicidie and Livicicidx) . 
Birc | s Small birds take plant seeds (finches, sparrows), also 
damage the blossoms. 
Mammals Moles, rabbits, mice, voles, and rats all do harm amongst 
ornamental plants. 
Survey of Section III., Sub-group B. 
ANIMALS INJURIOUS TO FORESTRY. 
The animal pests of forestry may be best treated in detail under 
smaller sections dealing with allied groups of trees ; i.e., animals injurious 
to (A) Pines ; (P>) Oak ; (C) Willows, etc., but for our purpose here no 
division need be made. 
There are no enemies amongst the lower groups of invertebrates until 
we come to the — 
Arachnida A few attack the leaves of trees ( Tetranychus ). 
Hexapoda Most orders occur on forest trees — wood borers, as wood 
wasps (Sirex), goat moth ( Cossus ) ; leaf eaters, gypsy 
moth ( Porthcsia ), tent caterpillars (Clissiocampci ) ; bark 
beetles ( Tomicus , Pissodes). 
Chilopoda and Dilopoda... None. 
Mollusca None. 
Reptilia and Amphibia ... None. 
Birds Woodpeckers and others damage the trunks, and others 
(crossbills, Loxia ) take cones and seeds. Capercaillzie 
and other grouse damage buds and young growths. 
Mammals Many mammals do harm by harking trees (deer, rabbits 
mice, voles, hares). 
Sub-groups C and I) of Group E. 
ft is difficult to enumerate the members of these two sub-groups. 
Numerous parasitic worms attack wild rabbits, big game, and game birds. 
Mange mites and ticks attack the fox and other animals. Birds destroy 
the useful earth-worms. The schedules adopted by the International 
Conference for the Preservation of Wild Animals in Africa may be referred 
to as giving some indications on the subject. In Sub-group D we find 
numerous insects damaging such wild plants as rushes, croci, the cranberry, 
pepper plants, and familiar forest trees already considered. 
