1911 ENTOMOLOGICAL SOCIETY. 99 



Otiorynchus sulcatus has been doing considerable injury to cyclamen and prim- 

 roses in two of the Montreal greenhouses. Injury was reported from the feeding of 

 the adults on the flowers; and the larvae Avhich live in the soil, destroyed the roots, 

 and even fed upon the corms of the cyclamen. Carbon bisulphide has had no effect 

 upon the larvje. Probably carbolic acid emulsion or strong kerosene emulsion will 

 be effective. We are not yet able to report any success in its control. Only two 

 sets of greenhouses were affected so far as we know ; others near by were not at all 

 troubled. 



The Apple-leaf hopper, so injurious here on potato and other crops in 1908 

 and 1909, was not numerous this season. 



The Cucumber beetle, D. vittata, was again injurious throughout this district. 

 It certainly seems to prefer squashes to melons and cucumbers; and can be effect- 

 ively kept from the two last by having a few "trap plants" of squash growing close 

 by. These "trap" squashes should be covered with Arsenite, dusted on in large 

 quantity, as soon as the beetles appear, and at the same time the valuable crop 

 should be sprayed with Bordeaux, which the beetles dislike. Many beetles can in 

 this way be poisoned during the first few days of their feeding. By repeating the 

 spray of Bordeaux on the main crop as often as needed, and leaving the " trap " 

 squashes unsprayed the beetles can be kept away from the cucumbers and melons. 

 The same method is effective in squash fields; a few plants being used as "traps** 

 and the rest being covered with Bordeaux. For several years I have had squash, 

 melons, cucumbers, and pumpkins growing close together. The squashes have 

 always been attacked by the beetles, but the melons and cucumbers have escaped 

 completely, and without treatment. 



The Spruce Budworm, Tortrix fumiferana, was noticed in small numbers at 

 Hudson. The Larch Sawfly, N. erichsonii, was present, but did little damage. 



- BASSWOOD OE LINDEN INSECTS. IV. 



Arthur Gibson, Ottawa. 



In 1904, the writer published, in the annual report of this Society, notes on 

 94 different species of insects which had been found attacking Tilia americana L. 

 In 1906, notes on other species were contributed which brought the list up to 103, 

 and, in 1907, a further paper increased this latter number to 122. The following 

 additional notes have since been made. 



ATTACKING THE FOLIAGE. 



Order Homoptera. 



123. Ceresa constans Wlk. This insect has been found commonly on bass- 

 wood at the Beaver Meadow, Hull, Que. in August and September, by Mr. W. Met- 

 calfe. Mr. Van Duzee has also found the species on basswood near Buffalo, N. Y. 



104 of 1906 list. Telamona recUvata Fitch. This species was collected on 

 September 26, 1907, and again on Sept. 2, 1908. The 1906 specimens were taken 

 on July 1. 



