EXPLANATION OF PLATE CXLIL 

 Geococcus radicum. 



F\^. I. Insects, in si'/u, on roots of grass, nat. size. 



2. Puparium of adult female, x lo. 



3. „ with part removed to show the insect and eggs, x to. 



4. Adult female, ventral view' x 17. 



5. Mid leg of adult female, x 280. 



6. Antenna of adult female, x 280. 



7. Posterior extremity of adult female, ventral view, x 280. 



8. Simple dermal gland of adult female, x 700. 



g. Compound dermal gland of adult female, x yoo. 



10. Cribriform organ of adult female, x 700. 



11. Young larva, optical section, x 135. 



12. Antenna of larva, x 500. 



13. Posterior extremity cf larva, x 280. 



14. Nymph, optical section, x 35. 



15. Antenna of nymph, x 280. 



16. Posterior extremity of nymph, x 280. 



17. Compound dorsal gland of nymph, x 700, 

 t8. Cribriform organ of nymph, x 700. 



