PLATE LI. 



Aphis urticaria. (Page 50.) 



Fig. 1. — Apterous viviparous female. 



Fig. 2. — Young specimen, nearly colourless. 



Fig. 3.— Pupa. 



Fig. 4. — Winged viviparous female. 



Aphis penicillata. (Page 51.) 



Fig. 5. — Apterous viviparous female. 



Fig. 6. — Winged viviparous female. a, Head, 

 stemmata, and antennae of the same, i. Thorax, 

 showing the lateral papilla. 



