230 



Prom France : unidentified wee\dls in tree seeds. From North 

 Carolina : Aulacas'pis ])entagona on loquat, Aleurodes sp. on Cape 

 jasmine. From New York : Diaspis boisduvaJi, Coccus hesperidum, 

 Saissetia hemisphaerica and Aspidiotus sp. on orchids ; Hemichio7iaspis 

 aspidistrae, C. hesj)eridum and Pseudococcns longispinus on ferns. 

 From Pennsylvania : Coccus hesperidum on Anthurium scherzerianum. 

 From Utah : Lepidosaplies heckii and Phomopsis citri on grape-fruit. 



Sanders (G. E.). What Sprays shall we use in 1917 ?— Canadian 

 Horticulturist, Toronto, x\, no. 3, March 1917, pp. 73-74, 2 figs. 



Five sprayings are recommended in this paper for apple orchards 

 in Nova Scotia. The first is given when the leaves about the blossom 

 clusters show green ; for canker worm, this should be a few days 

 later. It should consist of 3 gals, commercial strength lime- 

 sulphur to 100 gals, water, adding 21b. povvdered arsenate of lime. If 

 a thorough drenching with a drive nozzle at 200 lb. pressure be given, 

 apple scab, budmoth \Eucosma ocellana], brown-tail moth [Euproctis 

 chrysorrhoea], canker worm and tent caterpillars [Malacosmna] are 

 destroyed. If Aphids are present, | pint nicotine sulj)hate should 

 be added to the spray. The second spray is required when the blossom 

 buds show pink at the tips; 2^ gals, commercial concentrate lime- 

 sulphur is used to 100 gals, water, adding 2 lb. powdered calcium 

 arsenate. For severe infestation of green apple bug [Lygus communis] 

 the tree must be banded with tree tanglefoot before spraying and kept 

 clean imtil 7th July. The third spray should be applied when the blos- 

 soms fall and consists of about 2 gals, lime-sulphur to 100 gals, water, 

 adding \\ lb. powdered arsenate of lime. For these later applications 

 a drive nozzle is not suitable and a calyx nozzle should be used, main- 

 taining the pressure at 200 lb. For the fourth spray, in view of the 

 fact that Bordeaux mixture, when used immediately after the blossoms 

 fall, causes russetting, and that lime-sulphur is most harmful at this 

 time, a 7 : 7 : 100 Bordeaux mixture is recommended for use two 

 weeks after the blossoms fall, or later, in preference to dilute lime- 

 sulphur. For speed in making the mixture the following formula is 

 given : to each 100 gals, tank capacity use 7 lb. of bluestone dis- 

 solved in water, till the tanlc with water, then add 7 lb. or more of 

 hydrated lime. These should be well mixed and the poison added in 

 the form of 5 lb. paste arsenate of lead or 2 lb. powdered arsenate of 

 lime ; the spray is then ready. The mixture should be tested until it 

 turns litmus paper blue. Additional pests destroyed by this spray 

 include the tussock moth [Hemerocampa], fall webworm [Hyphantria 

 cunea], red-humped catterpillar [^Schizura concinna] and yellow-necked 

 caterpillar [Datana 7ninistra]. A fifth spraying is recommended in 

 very wet seasons for the control of apple scab or when tussock moth 

 and brown-tail caterpillars are abundant. This is a repetition of the 

 fourth spray and is given 10 or 14 days later. 



MuiR (F.). A new Formosan Purohita (Delphacidae). — Philippine Jl. 

 Science, Manila, xi, Sec. D, no. 5, September 1916, p. 311. 

 [Received 6th March 1917.] 



A description is given of a Delphacid, Purohita maculata, sp. n., 

 living under the leaf-sheaths of the broad-leaved bamboo {Dcndro- 

 calamus) in Formosa. 



