206 
The accompanying photographs show the outer and inner surfaces 
of one of the sections. 
Fig. 1. External view of a curved stem of Pinus sylvestris. 
Fig. 2. Internal view of the same stem 
A single attack by this moth is ‘arsitle of causing considerable 
injury to a tree and repeated attacks effectually prevent normal 
development, the head assuming a bushy, stunted character. 
Several such trees are to be seen at Kew, notably Pinus muricata. 
Many species of Pinus are attacked, even those introduced 
recently from China. The five-leaved pines, however, appear to 
be less susceptible to attack than the two- and three-leaved kinds. 
From Mr. Gamble we have received injured trunks of P. sylvestris, 
P. Pinaster, P. radiata, and P. montana var. 
An illustration of a curved pine stem following an attack by 
Retinia buoliana is given by A. Barbey in Traité d’Entomologie 
Forestiére (1913), p. 235. 
An article on the injury to young woods by this moth, written 
by Mr. W. P. Greenfield, appeared in the Quarterly J ournal of 
Forestry for January, 1914, pp. 25-30. W. D. 
