201 



bagged in a moist condition, or the bags are left standing on the 

 damp ground and readily become infested with weevils. If the 

 wheat is perfectly ripe when stripped, and dry when stacked, much 

 loss from this cause may be avoided. 



Hill (Q. F.). History of Citrus Canljer in the Northern Territory.— 



Northern Territory Australia Dept. Home and Territories [sine loco], 

 Bull. no. 18, October 1918, 8 pp., 8 plates. [Received 17th 

 March 1919.] 



Citrus canker, which is now known to occur in the United States 

 of America, the Philippines, Japan, China, Java, Singapore and the 

 Northern Territory of AustraUa, was probably introduced into the 

 last-named region from China or Japan. The infection of leaves, 

 leaf-petioles and young twigs frequently follows the course taken 

 by the caterpillars of Phyllocnistis citrella, Stn. (citrus leaf-miner). 



Froggatt (W. W.). The Passion Vine Longicorn Beetle {Morwhammus 

 fishdator). — Agric. Gaz. N.S.W., Sydney, xxx, no. 1, January 

 1919, pp. 37-39, 4 figs. 



Monochamus fistulator has a very wide distribution and has been 

 found in New South Wales severely infesting passion-vines ; it has 

 also been bred from the stems of cultivated figs in Sydney, but as 

 yet no native food-plant has been found. The first beetles were 

 obtained from passion-vines early in October, larvae and pupae 

 continuing active in the stems until the end of December. Eggs 

 are laid singly in or upon the bark close to the ground, the larva 

 feeding upwards through the central portion of the stem for a distance 

 of 3 or 4 feet before it is mature. Occasionally, however, the larvae 

 burrow down through the main roots underground. It is suggested 

 that painting the stems of passion- vines with a lime and sulphur 

 wash from October to January might deter the beetles from ovipositing 

 in the bark. During this period also the cut made in the bark by the 

 beetles when ovipositing can be seen and the eggs could be searched 

 for and destroyed. Dead timber is frequently used by the beetles 

 for oviposition and its presence is therefore a source of danger. 



Hill (C. C). Control of the Green Clover Worm in Alfalfa Fields.— 



U.S. Dept. Agric, Washington, D.C., Farmers' Bull. no. 982, 

 September 1918, 7 pp., 6 figs. [Received 7th March 1919.] 



The Noctuid moth, Plathypena scabra, F. (green clover worm), 

 has been recorded recently as severely damaging lucerne in the central 

 part of the United States, and, should its natural enemies become 

 reduced, it might become one of the worst lucerne pests. While 

 generally confined to leguminous crops, the caterpillars feed readily 

 upon strawberry and blackberry plants and several common weeds. 

 From 200 to 600 eggs are deposited by each female, generally occurring 

 singly on the under-side of the leaf. They hatch in about 4 days, 

 the larva moulting 5 times before reaching maturity and feeding for 

 about 4 weeks, after which it descends to the ground, and pupates 

 just beneath the surface. There are four generations of this moth 

 in Tennessee, and further north only two or three. The moths hide 



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