EXPLANATION OF PLATE CLX. 

 Phenacoccus glomeratus. 



Fig. I. Branch of TJiespesia, with mass of insects and eggs ; nat. size 



2. Antenna, normal form, x 135. 



3. „ form with fourth and fifth joints equal, x 135. 



4. ,, exceptional ten-jointed form, x 135. 



5. Foot of mid leg, x 280. 



6. Posterior extremity, x 135. 



