B.C. EXTOJIOLOGIC.VL SOCIETY. 



is iu the ei'owu at the surface of the ground. The " grub " or larva then finds its 

 way to the heart and here feeds, grows, and sets up a rot iu the bulb. The larva 

 will then remain in the bulb until the following February, when it vacates the bulb 

 and changes to the pupa state about i/i inch below the surface of the ground, and 

 from there hatches to the fly. " The true narcissus type is most susceptible to 

 attack, then come the Intermediate season daffodils. Reciirvus and Barii conspiciun 

 are most subject to attack, while ' Henry Irving," ' Golden Spur,' and ' Princeps ' 

 are almost free as are the late daffodils." 



Quoting the report of Dr. C. Gordon Hewitt : " The method of eradication whicli 

 has been found most simple and efficient in Europe is the annual lifting of the bulbs 

 and the destruction of all those which are found to be attacked by the maggots as 

 can readily be seen." 



Consequently, iu the spring aud fall, when bulbs are planted and dug, care 

 should be taken in selection and bulbs found infested should be destroyed. The grub 

 can be detected by pressure of the bulb, indicating a softness within, or by an 

 examination of the root-crown, wbere infested bulbs will show a point of entrance. 

 The grub may vary in length, but it attains a growth of % to 1 inch in length and 

 is broad iu proportion. Bulbs should not be left in the ground throughout the 

 summer. 



Rose-leaf Hoppeb. 



Frequently rose-bushes and other garden plants will exhibit their leaves finely 

 speckled with minute whitish or yellow dots. Later the dots form areas of 

 discoloration which are white or yellow at first, but later may become brown. On 

 the under-surface of the leaf minute yellowish green insects which hop freely when 

 disturbed will be found. They are the cause of the mischief. It is believed that the 

 winter is passed in the egg stage under the bark of the new wood. In the spring 

 these eggs hatch to form small active nymphs which are at first wingless, but 

 gradually grow by successive moults to the fully winged hopping individual. These 

 adults will have developed by June. 



The best remedies are the soap emulsions, Iverosene emulsion being particularly 

 satisfactory applied in the form of a spray during May. Particular attention should 

 be paid to forcing the spray to the under-sides of the leaves. 



The Oblique B.mvded Leaf-roller (Archips rosaceana, Harr.). 



This insect is common in Vancouver and is the cause of much disaijpointment to 

 the amateur rose-gardener. The larva is generally light green in colour, with a 

 dark-brown or black head, and is found in a curled portion of a leaf. It readily 

 devours the leaf, clustering several leaves together, making the bush unsightly. 

 When disturbed, the larvfe become very active, wriggle away, aud drop from their 

 nest by means of a thread. 



The most annoying injury caused is to the young blossom-bud in the spring. 

 When the rose finally blooms it will be found to be riddled aud perforated by a 

 number of feeding areas, totally spoiling the appearance. Frequently the entire bud 

 will be destroyed. 'S^lien the larva has become full grown the pupa is formed, being 

 light to dark brown in colour and about % inch long. Later from these pupaj the 

 moths appear. In Vancouver they fly the first days of July, being attracted iu great 

 numbers to electric lights. In general colour they are brown. It is believed that a 

 second brood of larvse appear in August and September. 



As a control, arsenate of lead at the rate of 1 oz. to a gallon of water at once 

 commends itself as an efficient remedy for the larvMS, applied in the form of a spray 

 at the early part of the Spring. Trap-lights set in pans of water will also catch 

 many moths in July. 



