PLATE XIII. 



Phylloxera c.-globosum Shimer. 



Fig. 91. Mature galls, above and beneath— natural size. 

 Fig. 92. Mature gall, vertical section —much enlarged. 



' Phylloxera c.-coniferum Shimer. 



Fig. 93. Mature galls, above and beneath —reduced H • 

 Fig. 94. Mature gall, vertical section— enlarged. 



Phylloxera c.-gummosa Riley. 



Fig. 95. Mature gall, vertical section— much enlarged. 



Fig. 96. Stem-mother —magnified 40 diameters. 



Fig. 97. Antenna of stem-mother— magnified 250 diameters. 



Phylloxera c.-vena Fitch. 



Fig. 98. Stem-mother — magnified 40 diameters. 



Fig. 99. Antenna of stem-mother— enlarged 250 diameters. 



Fig. 100. Winter-egg— magnified 120 diameters. 



Fig. 101. Apterous sexupare, ventral view -magnified 40 diameters. 



Fig. 102. Apterous sexapare, dorsal view -magnified 40 diameters. 



Fig. 103. Apterous sexupare, antenna — magnified 250 diameters. 



Fig. 104. Sexual female — magnified 200 diameters. 



Fig. 105. Sexual female, antenna — magnified 500 diameters. 



