106 



exha-astod if applied to metals. Siicli articles should be placed on 

 wooden blocks previously painted with the above mixture. Further 

 experiments are being made on the use of this mixture on trees, but 

 the results of the few tests made have been so far satisfactory, except 

 W'hen applied directly to the bark, when the effect was disastrous. 

 Owing to the high jirice of alcohol this method is not likely to be used 

 to a great extent. The substitution of methyl alcohol for ethyl is not 

 recommended, as it appears to destroy the repellent effect of the 

 mercuric salt. 



Maskew (F.). Quarantine Division ; Report for the Month of September 

 1916. — Mthly. Bull. Cril. State Commiss. Hortic, Sacramento, v, 

 no. 11, November 1916, pp. 422-423. 



The following pests were intercepted during September : — From 

 Central America : Aspidiotvs cyanophylU and Pseudococcus sp. on 

 bananas. From Cliina : Cyhn formicarius in sweet potatoes. From 

 Hawaii : Dia.spis bromeUae and Pseudococcus bromeliae on pineapples ; 

 Coccus longulHs on betel leaves. From Japan : a Coccid on the fruit 

 of pears ; Cladosporium citri on lemons ; Pseudococcus, sp. n., on a pot 

 plant. From Mexico : Pseudococcus sp. on green coconuts ; Chionaspis 

 sp. on coconuts ; Lepidosaphes ghven on limes. From Nevada : 

 Chorlophila (Pliorhia) jfJanipulpis in a vegetable resembling mustard 

 plant. From Tahiti : MonfuncUa maskeUi and Lepidosaphes beckii on 

 oranges and limes. From New York : Pseudococcus sp. on rose plant. 

 From Michigan : Cydia poruoneUa in apples. From Ohio : an un- 

 determined scale on ornamental plants. From Pennsylvania : 

 Pseudococcus nipae on rose. 



Leach (B. E). The Apple Leaf-sewer. — U.S. Depf. Agric, Washing- 

 ton, D.C., Bull. no. 435, 25th November 1916, 16 pp., 6 figs., 

 1 plate, 5 tables. 



The apple leaf-sewer, Ancylis nubecidana, was common at 

 Winchester, Virginia, in the summer of 1914. The larva of this moth 

 may do considerable damage to the foliage of apples, especially in 

 young orchards receiving indifferent care. It is generally distributed 

 over the North and Central Atlantic States, the Middle West, and in 

 portions of Canada, and appears to confine its attack to the apple. 



The feeding habits, method of folding the leaf, and life-history of 

 A. nabeculana are given and are summarised by means of tables. 

 The larva hibernates inside the fold of the leaf and is able to withstand 

 great extremes of moisture and temperature. 



The larvae are attacked by a number of parasitic and predaceous 

 enemies, of which the Chalcid, Pseudomphale ancylae, Gir., is very 

 connnon. A Braconid, Rhysipolis phoxopteridis, Riley, and an 

 Ichneumonid, Angiliu paediscae, Riley, have also been reared from the 

 larvae, while ants are an important factor in reducing the number of 

 larvae and pupae during winter and spring. 



The control of this moth with arsenical sprays is rendered s'mple, 

 owing to the fact that the larva migrates from one leaf to another 

 several times during the season. As the eggs begin to hatch about 

 14th June and continue to do so until about 2nd July, the regulation 

 arsenical spray of 2 lb. arsenate of lead to 50 U.S. {42| Imp.) gals, of 



