XVlll 



LIST OF ILLUSTRATIONS. 



34. Surface of leaflets of moun- 



tain-ash injured by Eri- 

 ophye'< a uc II pa rid' . 



35. Edges of leaves of black- 



thorn rolled inwards by 

 species of Eriophyes 



36. Dorsal surface and side view 



of PhijUocopten carpini . 



37. Galls on leaf of sycamore 



caused by Phyllocopte^ 

 acericola 



45. 



46. 



COLEOPTERA (Beetles). 



Typical larvie of beetles . 



Head of Cicindela (magni- 

 fied) .... 



True wings of beetle 



Typical beetle (upper side) 



Typical beetle (under side) 



Stag - beetles, male and 

 female .... 



Portion of ash timber in- 

 jured by larva of stag- 

 beetle .... 



Young beech seedling, the 

 roots of which have been 

 destroyed by larva of 

 May beetle . 



The common cockchafer 

 or May beetle : feelers, 

 chrysalis, &c. 



JMelolontha hippocastani 



49. Injury caused to beech 

 saplings hy A grUusvlridis 



Agrilns viridis . 



Portion of dead hawthorn 

 stem burrowed by larvte 

 of Prlohium casfaneum . 



Markings of larvae of Er- 

 nohius. mollis on spruce 

 pole .... 



C'lytus arietis (Wasp beetle) 



Rhar/him inquisitor . 



BlldiJ/lUtl hii'dscititum 



Acaii/hiic/iiii.-i iiiVdis . 



Sap( r<l(i (■(irchiiria-s . _ . 



Larva of Saperda carcharias 



Injury caused to stem of 

 aspen poplar by larvje of 

 Saperda populnea . 



Mdasoma populi : beetle, 

 larva, and pupa » 



45 



61. Injuries done by Melasoma 



populi . . , .63 



62. Phyllodecta vilellinoi (Wil- 



low beetle) ... 64 



63. Willow leaf injured by 



larvffi of Willow beetle 65 



64. Leaf of balsam poplar in- 



jured by larvae of Willow 

 beetle .... 66 



65. Oak leaves rolled by Atte- 



labus curcidionideK . . 67 



66. Attelabus curculionides . 67 



67. Birch leaves rolled by De- 



poraus hetid<c . . 67 



68. Deporails hetnke . . 68 



69. Otiorrhynchus picipei^ . 69 



70. Otiorrliyndms stdcatiin (Y'lwe 



weevil) .... 69 



7 1 . Foliage of mountain - ash 



eaten by PhyllohiuH 

 maculicoruis . . .71 



72. Young spruce plants 



gnawed by Hylobius 

 abietis .... 72 



73. Hylobim abielis (Pine 



weevil), beetle, larva, 

 and pupa 



74. Cocoons of Pisnodes pini on 



stem of Scots pine 



75. Pissodes jnni 



76. Young pine - stem barked 



to show pupal-beds of 

 Pissodes notatus 



77. Beech leaves showing in- 



juries done by larva and 

 holes eaten by OrcheMex 

 Jdiji .... 



78. Larval burrows of Crypt- 



orrhynchus lapathi in 

 alder stems . 



79. Cryptorrhynchvr'i kqmthi . 



80. Balaninus nucum 



81. Portion of beech timber in- 



jured by Rhopalomesites 

 Tardyi 



COLEOPTERA (Scolytid^). 



82. Typical workings of " bark- 



beetles" 



83. Antenna of Hylesimi-s cren- 



atus .... 



73 



81 



