142 



this was especially the case on light soils, where the percentage of 

 infestation was twice as high when they had not })een rolled. Many 

 farmers also favour rolling the fields because hoeing the weeds then 

 can begin before the plants appear above the ground, and because 

 germination is furthered by this method and the drying up of the soil 

 prevented. Hoeing the weeds before the i)lants appear has proved a 

 very good measure for controlUng flea-beetles. 



Jackson (Miss D. J.). Further Notes on Aphides collected principally in 

 the Scottish Highlands. — Scot. Naturalist, Edinburgh, no. 93-91, 

 September-October 1919, pp. 157-165, 2 figs. 



This list of Aphids includes : Macrosiphum dirhodum, Wlk., on 

 roses under glass in September ; M. epilobii, Theo., on terminal shoots 

 of willow herb {Epilobiiim) in August ; M. (jranarium, Kirby, on oats 

 in September ; M. lactucae, Schr., on currant and gooseberry in 

 September ; M. milJefolii, ¥., on Achillea millefolium in August ; 

 Acyrthosiphon (M.) pisi, Kalt., on broad beans and clover from June to 

 July and on beans and vetch in September ; M. rosae, L., on roses 

 under glass in September ; Amphorophora ampullata, Buckt., on the 

 undersurface of fern leaves in September ; Drepanosiphum platanoides, 

 Schr., on the undersurface of leaves of sycamore (Acer) in September 

 and preyed upon by Cecidomyid larvae ; RJwpalosiphum britteni, Theo., 

 on gooseberry and currant in September ; Rhopalosiphum lactucae, 

 Kalt., on gooseberry in August, many individuals having been killed 

 by the fungi Empusa {Entomophthora) aphidis, and E. {Triplosporium) 

 Jresenii ; R. persicae, Sulz., on the undersurface of potato leaves in 

 September, many being killed by Empusa Jresenii ; Hyalopterus flavus, 

 Kittel (aquilegiae, Koch, trirhodus, Wlk.), on columbine {Aquilegia) in 

 July and September and preyed upon by Syrphid and Cecidomyid 

 larvae ; Aphis adjecta, Wlk., on chrysanthenum in July, parasitised by 

 a Chalcid, and also on Eryngium cdpinum. in September ; A. cardui, 

 L., on thistle {Cnicus arvensis'i) in August ; A. grossulariae, Kalt., on 

 gooseberry in September; A. ilicis, Kalt., on holly in September: 

 A. myosotidis, Koch, on Myosotis in July ; A. pnmi, Reaumur, on plum 

 in July; A. rumicis, L., on leeks in August; A. viburni, Scop., on 

 Viburnum in September ; A. achilkae, F., redescribed from examples 

 taken on Achillea millefolium in August ; Myzus crataegi, Wlk., on 

 hawthorn in July, many being killed by Cecidomyid larvae ; 

 M. Jcaltenbachi, Schon., on grass in July ; M. lactucae, L., on currant in 

 July ; M. solani, Kalt., on potato leaves in September ; M. whitei, 

 Theo., on gooseberry in August, when it was attacked by Empusa 

 fresenii, and also on currant in September ; Ccdlipterus quercus, Kalt., 

 on oak in September ; Eucallipterus tiliae, L., on lime in September ; 

 Chaitophorus aceris, L., on sycamore in September ; Lachnus costata, 

 Zett., {fasciatus, Burm.) on spruce {Picea excelsa) in July ; Lachniella 

 cilicica, Del G., on silver fir {Abies pectinata)^ in September ; 

 L. juniperi, Y., on juniper in Kent in July.; L. laricis, Wlk., on larch 

 in June, July and September ; L. pichtae, Mordw., on Abies pectinafa 

 in September ; L. pini, L., on Scotch fir {Pimis sylvestris) in July ; 

 L. piinicola, Kalt. {ahietis, Wlk.) on Picea excelsa in July ; L. pini- 

 hahitans, Mordw., on Pinus sylvestris in September ; EidacJmiis az/ilis, 

 Kalt., on needles of Austrian pine {Pinus laricio var. austriaca) in July 



