PLATE CI. 



Laohnus longipes. (Page 59.) 



Fig. 1. — Winged viviparous female. Perhaps this 

 insect has the greatest expanse of wing of all the 

 British Aphididse. The antennsB, on the other hand, 

 are very short. 



Stomaphis quercus. (Page 62.) 



Fig. 2. — Apterous viviparous female, r. The ros- 

 trum protruding beyond the apex of the body. 



Fig. 3. — The same viewed from the underside. The 

 great strength of the sheath near the head is here 

 shown, i. Labrum and the fine setae. These last are 

 the representatives of the labium and the maxillae. 



Fig. 4. — Head and antenna of fig. 1. 



Fig. 5. — Head and antenna of fig. 2. 



