110 



[1900 



G. 



Gamma or Silver Y-Moth, 53-58; cater- 

 pillars of, at Mustard near the Hum- 

 ber, and Potato leaves at Holbeach, 

 53; description and life-history of 

 infestation, 58, 54 ; observations of 

 attack on Mustard, and estimate of 

 damage from, 54-57 ; on Potato 

 leaves, 57 ; moths conjecturally wind- 

 borne, 57 ; pi'eventive measures, 

 58 



Gooseberry, 101-103 



Gooseberry luid Currant Sawlly, 101- 

 103 ; description of caterpillars of, 

 101 ; place of rest of chrysalids and 

 description of flies ; unusually large 

 amount of caterpillars observed at 

 Bunbury, Cheshire, in I'JOO, and 

 numbers destroyed by hand-picking, 

 102 



H. 



Hand-picking to destroy Gooseberry 



Sawfly caterpillars, 102 

 Hylemia coarctata, 38-43 

 Hylesinus crenatus, 16-21 ; fraxini, 



9-16 



I. 



Insect infestations chiefly noticed in 

 1900, V, vi 



K. 



Kainite as a dressing, 66, 68 

 Kerosine emulsion, U.S.A. recipes for, 

 77,78 



Lampronia rubiella, 85-88 

 Laverna atra, 1-8 ; hellerella, 1-8 



M. 



Mamestra brassiere (Cabbage Moth), 

 103-105 ; at Peas, 103, 105 ; descrip- 

 tion of caterpillar in various stages, 

 103, 104 ; observed as feeding on 

 Pea leafage in two successive years, 

 104 



Mustard, 53-58 



N. 

 Nematus ribesii, 101-103 



(Estrus ovis, 89-94 



Pear, 59-69 



Pear Gnat Midge, 63-69; method of 

 egg-laying in blossom-buds, 63 ; de- 

 scription of larvffi and of appearance 

 of infested pears, 63, 64 ; description 

 of Gnat Midge, 64 ; special reports 

 of attacks and effects of treatment, 

 64-67 ; measures of prevention and 

 preventive applications, 67-69 



Pear Leaf-blister Mites, 59-62 ; cylin- 

 drical four-legged Acari, life-history 

 of, 60 ; description of leaf-blisters 

 caused by, 60, 61 ; " kerosine emul- 

 sion " useful to destroy, 61, 62 



Pear, " Pitmaston Duchess," noticed as 

 liable to attack of Pear Gnat Midge, 

 65, 66 



Pea and Bean- seed Beetles, 21-31 



Peas, 103-105 



Peuthina ( - Antithesia) variegana = 

 cynosbatella, 73-78 : = pruniana, 73, 

 74 



Phytoptidiv, characteristics of, 59 



Phytoptus pyri, 59-62 ; ribis, 43-52, — 

 non-success of various preventive ex- 

 periments tried, 45, 46, — also of some 

 insecticides tested, 47 



Pine-shoot Tortrix Moth, 105-108 ; ha- 

 bits of caterpillar, and distorted growth 

 of shoots caused by, 106 ; description 

 of moth, 107 ; prevention and reme- 

 dies, 107, 108 



Pith Moth, 1-8 ; signs of attack of, 2 ; 

 description of, 3 ; of caterpillar of, 4 ; 

 of chrysalis of, 5 ; of shoots below 

 buds tunnelled by caterpillars, 6, 7 ; 

 prevention and remedies, 7, 8 



Pocket or Bladder Plums, 78-81; at 

 one time considered to be caused by 

 insects, 79 ; description of appear- 

 ance of swollen fruit, 79, 80; pre- 

 ventive measures, 81 



Potato, 82-88 



Pine, 105-108 ; caterpillar attack to, 

 57 



Plum, 69-81 



Plum Splint or Sapwood Beetle, 69-72 ; 

 distinctions of beetle, S. pruni from 

 S. riigtilosits, 70 ; the two kinds found 

 together, 71 ; peculiarities of form 

 of tunnelling, 72; life-history, 72 



Plusia gamma, 53-58, 84 



Pulvinaria ribesise, 48-52 



Psylla mali, 99-101 



R. 



Raspberry, 85-88 



Raspberry Stem-bud Caterpillar, 85-88 ; 

 dates of observation, 85 ; description 

 of caterpillar and of injured shoots 

 and buds, 86 ; of chrysalis and moth, 

 87 ; of egg-laying in the Raspberry 



