477 



Allen (W. J.)- Spraying.— iV.S. IF. Dcpt. Agric, Sydney, Farmers' 

 Bull. 72, 6tli edn., March 1921, 49 })p., 3 figs. Price Is. [Received 

 24th July 1922.] 

 General instructions are given for the preparation and application of 



sprays, arranged under the various cla.sses of pests. Directions are 



also given for the preparation of fungicides, poison baits for fruit-flies, 



and lime and tobacco dusts. 



Froggatt (W. W.). a Spraying Caution.— yl^i/c. Gaz. N.S.W., 

 Sydney, xxxiii, pt. 6, 1st June 1922, p. 436. 



Only fresh, clean crystals of washing soda should be used in the 

 spray for the control of white wax scale [Ceroplasics], as soda that has 

 been kept in stock for some time causes injury to the foliage. 



Froggatt (W. W.). A Mite that attacks Fruit Tvees.— Agric. Gaz. 

 N.S.W., Sydney, xxxhi, pt. 6, 1st June 1922, p. 456. 

 Bryobia praetiosa {praicnsis) (red apple mite) is very abundant at 

 times on npple trees, but it is not usuahy harmful, probably because 

 it appears early in the winter and is destroyed by subsequent storms. 

 In a mild season the mites may cause considerable damage to young 

 leaf-buds and suck the sap from the trees. Any badly infested trees 

 should be sprayed with lime-sulphur as the mites hatch. 



Jarvis (E.). Cane Pest Combat and Control.— Queensland Agric. JL, 

 Brisbane, xvii, pt. 6, June 1922, pp. 299-300. 



Of 15 different methods of combating the larval stage of Lepidoderma 

 albohirtum soil fumigants are considered the most likely to be successful. 



Arrangements are being made to introduce from Java two parasitic 

 ScoYxids, Dielis thoracica, F., and D. javana, Lep. -The hfe-cycle of 

 the former occupies 39-62 days. 



A new pest of sugar-cane, a Noctuid, Spodoptera maiiritia, Boisd., 

 is of minor importance at present. 



Jarvis (E.). Early Stages oJ Macrosiagon cuaUlata, Macl. — Queensland 

 Agric. JL, Brisbane, xvii, pt. 6, June 1922, p. 307, 1 plate. 



The Rhipiphorid beetle, Macrosiagon pictipennis, Lea, has been 

 regarded as an enemy of the useful Hymenopterous parasites, 

 Campsomeris tasmaniensis , Sauss., and C. radula, F. Nothing was 

 known about its hfe-cycle, but an allied species, Macrosiagon cucidlata , 

 Macl., has been observed ovipositing on the lower surfaces of leaves of 

 Fie us opposita and Urcna lobata. Experimentally the eggs hatched 

 after \lh days. The triungulin, or first larval stage, resembles that of 

 Rhipiphorus paradoxus, and, hke that insect, it probably frequents 

 flowers visited by Hymenoptera, and is carried by them into their 

 nests. It waits until 'the egg of its host hatches, then enters the body 

 of the larva. 



Jarvis (H.). Fruit Fly Investigations. Second Progress Report.— 



Queensland Agric. JL, Brisbane, xvii, pt. 6, June 1922, pp. 



309-312. 



Investigations into the occurrence of Dacus ferrugineus (tryoni) 



have been continued [R.A.E., A, x, 416]. Burning the fruit on the 



ground is not a reliable method of control, as the larvae enter the 



