180 FOEESTKY WOKK 



great damage to young trees. Easily recognized by its 

 two tooth-like projections, one on each wing-case. 



Tomicus Acuminatus, usually found on older trees, 

 has three teeth upon each wing-case. 



Tomicus Sexdentatus, not very common or very des- 

 tructive, as it only attacks the bark of old Scots Pine. 

 Has six teeth upon each wing-case. 



Rhagium Bifasciatum, does not damage living trees, 

 but is found on dead and very dry trees. It is a very 

 fine beetle in a collection. 



Moths. 



Retinia Turionana (Pine-Bud Tortrix Moth). Not a 

 very common moth. Forewings red- brown with grey 

 markings, hindwings grey. Caterpillar hollows out Pine- 

 buds. 



Retinia Buoliana (Pine-Shoot Tortrix Moth). A very 

 common and destructive insect. Caterpillar hatches 

 from egg laid on the buds of Scots Pine, and eats its way 

 up the young shoot, which dies in consequence. The 

 moth is very pretty, with forewings yellowish-red with 

 silvery markings, hindwings dark grey. 



Retinia Resinella. Not so common as the last moth. 

 Forewings black-brown with silvery markings; hindwings 

 pale brown-grey. Damage done to Pine- buds, the flow 

 of resin from which causes the growth of a gall, two- 

 chambered, in which the larvae pass the winter. 



Trachea Piniperda (Pine Beauty Moth). One of our 

 prettiest moths; about 1 J inches across the wings. Fore- 

 wings reddish- brown, marked .with grey; hindwings dark 



