THE QUINCB TREE ] 



yellow. The branches are often tunnelled by the 

 large grub of the leopard moth, Zeuzera Aesculi L. or 

 Z. pirina L., the tunnel being directed upwards as 

 usual; and the base of the stem is undermined and 

 tunnelled in all directions, but chiefly downwards by 

 the large white grubs of the two beetles Cerambyx 

 miles Bon. and Capnodis tenebrionis Latr. The quince 

 is more liable than either the pear or the apple to 

 the attacks of the scale insects Lecanium Oleae and 

 Ceroplastes Rusci. It is also visited by Lecanium 

 hesperidum and leery a Purchasi Mask. The fruit is some- 

 times tunnelled to the core by the larva of the codling 

 moth, Grapholitha pomonella L. 



The quince mildew, caused by Podosphaera tri- 

 dactyla DBy. sometimes checks the growth of the young 

 twigs, late in summer, covering the foliage with its 

 characteristic white powdery formation, and is kept in 

 check by dusting repeatedly with flowers of sulphur. 

 Septoria Cydoniae Fckl. and S. cydonicola Thiim. produce 

 irregular greyish spots on the leaf, surrounded by 

 a darker margin, which spots later on develop minute 

 black dots which are the fructifications of the fungus. 

 Gleosporium Cydoniae Mtge. produces irregular brown 

 spots, on the foliage, on which are developed minute 

 grey dots; and G. minutulum Br. and Cav. produces 

 similar spots, but the grey dots are developed preferably 

 along the nerves of the leaf. Phyllosticta Cydoniae Sacc. 

 produces dark brown spots with minute black dots. 

 Gymnosporangium juniperinum FY., G. confusum Plow., 

 Aecidium Cydoniae Lenorm., and Ramularia necans Pass, 

 have been observed on the quince in France, italy and 

 Central Europe. 



