147 



months since its introduction, this CoccineUid seems to have become 

 thoroughly established and feeds freely on the eggs and young larvae 

 of whiteflies, both in the adult and larval stages ; it is therefore 

 hoped that its introduction into Florida wall prove valuable. 



Snyder (T. E.). "White Ants" as Pests in the United States and 

 Methods of Preventing their Damage. — U.S. Dept. Agric, 

 Washington, D.C., Farmers' Bull. no. 759, 9th October 1916, 

 20 pp., 14 figs. [Received 24th January 1917.] 



The information concerning the life-cycle and habits of Leucotermes 

 flavipes, Kollar, L. virginicus, Banks, and L. liicifugus, Rossi, has 

 already been abstracted [see this Review, Ser. A, iii, p. 378, and iv, 

 p. 181]. Extensive damage is caused by these termites to woodwork 

 of buildings, as well as to living trees. 



Stored material should be kept in a dry atmosphere, for once 

 contact with the source of moisture, such as damp earth or wood, 

 is cut off the insects depart or die. Temperatures over 160"F. will 

 kill the insects. Living trees are difficult to protect, but care should 

 be taken that they do not become scarred near the base. All debris, 

 such as decaying wood, should be removed and, in vineyards, dead 

 or diseased vines should be destroyed and pruned surfaces painted 

 with coal tar. For flowers and greenhouse stock the use of less stable 

 manure is advised, while liquid carbon bisulphide can be poured into 

 small holes near infested plants, the hole being quickly closed with 

 earth. A 5 per cent, kerosene-emulsion solution has also been found 

 effective. For the protection of woodwork in buildings, wherever 

 possible, the foundations should be constructed entirely of stone, 

 brick or concrete, with basement pillars of stone supporting the 

 floor above. Where stone or concrete foundations are impracticable, 

 the timber used should be impregnated with coal-tar creosote. 

 Necessary woodwork in greenhouses should be treated with bichloride 

 of mercury. 



For the elimination of termites already estabHshed in buildings, 

 the point of entrance of the colony should be traced and, after 

 removing the damaged wood, the ground should be soaked with 

 kerosene and the damaged parts replaced by brick, concrete, or 

 timber soaked in coal-tar creosote. 



Ehrhorn (E. M.). Division of Plant Inspection. — Hawaiian Forester 

 and AgrioulUirist, xiii, no. 11, November 1916, pp. 399-401. 

 [Received 24th January 1917.] 



During the month, of 1,747 bags of beans from Japan, 389 w^ere 

 found infested with larvae of Paralipsa modesta (rice moth) and were 

 fumigated with carbon bisulphide. Two large orchids on original 

 stumps from the Philippine Islands were seized and destroyed by 

 burning. On the hmb of the tree on which the orchid was growing 

 a w^ood-boring beetle was found under the bark and some Centipedes 

 and a cockroach {Polyzostera soror) in the packing. Pseudococcus 

 citri was intercepted on plants from New Jersey and New York, 

 After fumigation, the pupa of the eastern tussock moth [Hemcro- 

 campa leucostigma) was also found. 



(C359) a2 



