84 



enlarged drawings of egg and pupa ; timber with "borings of 

 larva. 



E. 142. 1886. 



Insects injurious to Oak (Sap and Bark). 



1-3. Callipterus querceus : perfect insects and larvae, with 

 enlarged drawings of winged male and female and apterous 

 female. 



4-6. Phylloxera quercus : perfect insects and larvae, with 

 enlarged drawings of different stages of development. 



7-9. Dryobius roboris : perfect insect and larva ; enlarged 

 drawings of winged male and apterous female ; of female depo- 

 siting eggs on bark, and of single egg. 



10-21. Plant-bugs which suck the juices of the trees. 



10, 11. Globiceps flavonotatus : perfect insects and 

 enlarged drawing. 



12, 13. Derceocerus striatellus : perfect insects and 

 enlarged drawing. 



14, 15. Anthocoris nemorum : perfect insect and enlarged 

 drawing. 



16-19. Topicoris rufipes : perfect insect and larva with 

 enlarged drawings, 



20, 21. Pentatoma dissimile : perfect insects and enlarged 

 drawing. 

 22-33. Scolytidce (bark -mining beetles) : 



22-24. Scolytus rugulosus : perfect insect and enlarged 

 drawing; piece of wood showing borings. This species 

 also attacks the apple. 



25-30. Scolytus multistriatus : perfect insects and 

 enlarged drawing of same, as well as of larva and pupa ; 

 pieces of bark showing borings. 



31-33. Scolytus intricatus : perfect insect and enlarged 

 drawing ; part of a branch showing borings. 

 34, 35. Hyphophlceus fasciatus: perfect insect and enlarged 

 drawing ; this species and the next feed upon the wood-boring 

 larvae, and should not be destroyed. 



36-38. Hypophlceus bicolor : perfect insects with enlarged 

 drawing of same and of larva. 



39-46. Anobiidce (death-watch beetles) : 

 39. Anobium striatum, specimens of. 

 40-44. Anobium tessellatum : perfect insects and larva, 

 with enlarged drawings of same ; piece of wood showing 

 borings. 



45, 46. Ptilinus pectinicornis : perfect insects and 

 enlarged drawing. 



E. 143. 1886. 



