A List of the Insects affecting Sugar-Cane in British Guiana. 307 



11. Acrolophus sacchari, Busck, n. sp. 



Injury : The caterpillars live underground, infesting poor stools, 

 especially such as are affected by drought. 



12. Halisidota strigulosa, Walk. 



Injury : The caterpillar eats the leaves. 



Natural enemies : 



Caterpillar parasitized by an ichneumon, a species of Enicospilus. 



13. Galigo iloneus iloneus, Cramer. 



Injury : Caterpillar eats leaves. 



Natural enemies : 



Eggs parasitized by a small hymenopteroo. A large Chalcidid 

 has been bred from the pupa. 



14. Taygetis andromeda, Cr. 

 Injury : Caterpillar eats leaves. 



15. Perichares corydon, Fab. 



16. Xeniadcs chalestra, Hew. 



17. Prenes vala, Mabille. 



18. Prenes ocola, Edw. 



19. Prenes ares. Feld. 



20. Lerema accius, Abb. 



21. Lerema mooreana, Dyar, n. sp. 



22. Atrytone heberia, Dyar, n sp. 



23. Atrytone gladolis, Dyar, n. sp. 



Common name of 15 to 23 : Skipper butterflies. 



Injury : Caterpillars eat leaves. 



Natural enemies : 



Chalets annulata has been bred from pupa of Perichares corydon ; 

 a Zelemorpha and an undetermined Braconid from the cater- 

 pillar of Prenes ocola, and a Joppa from pupa of same ; and 

 undetermined Braconid parasites from Lerema mooreana and 

 Prenes vala. 

 Caterpillars of Prenes vala preyed on by those of Laphygma 

 frugipera. 



COLEOPTERA. 



24. Xyleborus sp. 



Common name : Shot-borer. 



Injury : Larva infests diseased and souring cane. 



