Introdiictwn. xxxi 



Sub-section (/i) of Section II. 



ANUIALS INJURIOUS TO ORNAMENTAL PLANTS. 



Protozoa to Nematoda ... None. 



Chsetopoda Earthwonus often do harm to potted plants. 



Crustacea Land isopods are destructive, especially under glass. 



Arachuida Many acari cause harm {Tcfrawfchns, Bryobia). \ 



Hexapoda Most orders of insects are injurious (carnation maggot, 



narcissus flj' (Mcrodon cqncsfris), scales (Chionfcsjns rosee, 



Lccanium olex), thrips (Thripidae), mealy bug (Dac- 



fi/lobius), rose sa^\'flies {Hijlotoma rosse, Blcnnocampa 



2)Hsilla). 



Chilopoda None. 



Diplopoda Millepedes [Jnlidiv^ often attack ornamental plants, 



especially bulbs. 



Mollusca Snails and slugs {Hclicidai and Liiiiacidx). 



Amphibia and Reptilia ... None. 



Birds Small birds take plant seeds (finches, sparrows), also 



damage the blossoms. 

 Mammals Moles, rabbits, mice, voles, and rats all do harm amongst 



ornamental plants. 



SuEVEY OF Section III., Sub-group B. 

 AXIMALS IXJURIOUS TO FORESTRY, 



The animal pests of forestry may he best treated in detail under 

 smaller sections dealing with allied oroups of trees ; i.e., animals injurious 

 to (A) Pine.s ; (P)) Oak ; (C) "Willows, etc., but for our purpose here nO' 

 division need be made. 



There arc no enemies amongst the lower groups of invertebrates until 

 we come to the — 



Arachnida i A few attack the leaves of trees (Tctranychus). 



Hexapoda Most orders occur on forest trees — wood borers, as wood 



wasps {Sirrx'), goat moth {Cossus) ; leaf eaters, gypsy 

 moth (Portln'siii), tent caterpillars (Ciissiocaw^w) ; bark 

 beetles [Tomicus, Fissodcs). 



Chilopoda and Dilopoda... None 



Mollusca None. 



Reptilia and Amphibia ... None. 



Birds Woodpeckers and others damage the trunks, and others 



(crossbifk, Loxia') take cones and seeds. Capercaillzie 

 and 'Other grouse damage buds and young growths. 



Mammals Many mammals do harm by barking trees (deer, rabbits 



mice, volea, hares). 



StTB^GEOTPS C Alfl) B >0F GrOUP E, 



It is difficult to enumei-ate the members of these two sub-groups, 

 Xumerous parasitic worms attack wild rabbits, big game, and game birds. 

 Mange miles 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 indicaitions on the subject. In Sub-group D we find 

 numerous insects damaging sucli wild plants as rushes, croci, the cranberry,, 

 pepper plants, and familiar forest'-trees-already considered. 



