XVI 



LIST OF ILLUSTRATIONS. 



34. Surface of leaflets of moun- 



tain-ash injured by Eri- 

 ophyes aueuparice . . 32 



35. Edges of leaves of black- 



thorn rolled inwards by 

 species of Eriophyes . 33 



36. Dorsal surface and side view 



of Phyllocoptes carpini . 34 



37. Galls on leaf of sycamore 



caused by Phyllocoptes 

 acericola . . .35 



COLEOPTERA (Beetles). 



38. Typical larvae of beetles . 37 



39. Head of Cicindela (magni- 



fied) . . . .38 



40. True wings of beetle ... 40 



41. Typical beetle (upper side) 40 



42. Typical beetle (under side) 41 



43. Stag - beetles, male and 



female .... 42 



44. Portion of ash timber in- 



jured by larvae of stag- 

 beetle .... 43 



45. Young beech seedling, the 



roots of which have been 

 destroyed by larvae of 

 May beetle . . .45 



46. The common cockchafer 



or May beetle : feelers, 

 chrysalis, &c. . . 45 



47. Melolontha hippocastani . 48 



48. 49. Injury caused to beech 



saplings by A grilusviridis 49 



50. Agrilus viridis . . . 49 



51. Portion of dead hawthorn 



stem burrowed by larvae 



of Priobium castaneum . 52 



52. Markings of larvae of Er- 



nobius mollis on spruce 



pole .... 53 



53. Glytus arietis (Wasp beetle) 55 



54. Rhagium inquisitor . . 57 



55. Rhagium bifasciatum . 57 



56. Acanthocinus cedilis . . 59 



57. Saperda carcharias . . 60 



58. Larva of Saperda carcharias 60 



59. Injury caused to stem of 



aspen poplar by larvae of 

 Saperda populnea . . 62 



60. Melasoma populi : beetle, 



larva, and pupa . . 63 



61. Injuries done by Melasoma 



populi .... 63 



62. Phyllodecta vitellines (Wil- 



low beetle) . . .64 



63. Willow leaf injured by 



larvae of Willow beetle 65 



64. Leaf of balsam poplar in- 



jured by larvae of Willow 

 beetle .... 66 



65. Oak leaves rolled by Atte- 



labus curcidionides . . 67 



66. Attelabus curculionides . 67 



67. Birch leaves rolled by De- 



porails betxdm . . 67 



68. Deporaiis betulai . . 6S 



69. Oliorrhynchus picipes . 69 



70. Otiorrhynchus sulcatus(Vine 



weevil) .... 69 



71. Foliage of mountain -ash 



eaten by Phyllobius 

 maculicornis . . .71 



72. Young spruce plants 



gnawed by Hylobius 

 abietis . . . .72 



73. Hylobius abietis (Pine 



weevil), beetle, larva, 



and pupa . . .73 



74. Cocoons of Pissodes pini on 



stem of Scots pine . 77 



75. Pissodes pini . . .78 



76. Young pine -stem barked 



to show pupal-beds of 

 Pissodes notatus . . 79 



77. Beech leaves showing in- 



juries done by larva and 

 holes eaten by Orchestes 

 fagi . . . .81 



78. Larval burrows of Crypt- 



orrhynchus lapathi in 

 alder stems ... 82 



79. Cryptorrhynchus lapathi . 83 



80. Balaninus nucum . . 83 



81. Portion of beech timber in- 



jured by Rhopalomesites 

 Tardy i . . .84 



COLEOPTERA (Scolytid.e). 



82. Typical workings of " bark- 



beetles" ... 88 



83. Antenna of Hylesinus cren- 



atus .... 90 



