OF SOME DIURNAL LEPIDOPTERA. 



69 



partly between and partly under the ordinary scales, the 

 latter must be raised when the former are inflated; and 

 when not in use, they probably lie flat, like empty bags, 

 under the superincumbent scales. By this supposition, as 

 regards the functions of these plumules, we may account 

 for the superior strength and power of flight which the 

 males possess over the females. 



Here, then, is a field open for great microscopical re- 

 search — a field which promises variety of interest the further 

 it is pursued. New forms of scales will probably be dis- 

 covered in many genera hitherto unexamined ; the atten- 

 tion should not, however, be directed solely to the ob- 

 servation of these plumules, as all the forms of scales are 

 worthy of careful study. 



Annexed is a list of the plumules figured on the Plates 

 by Mr. Sidebotham, together with the geographical habitat 

 of the insect. 



PlERIS. 



Name. Locality. 



1. Hirlanda. Bengal. 



2. Pyrrha. Brazil. 



3. Zochalia. South Africa. 



4. Teutonia. Australia. 



5. Piiryne. Java. 



6. Hedyle. West Africa. 



7. Argenthona. Australia. 



8. Gliciria, China. 



9. Belladonna. North India. 



10. Harpalyee. Australia. 



11. Belisama. Java. 



12. Lanassa. Australia. 



13. Isse. Celebes. 



14. Temena. Lomboek. 



15. Agathina. West Africa. 



16. Gridica. Senegal. 



Anthocaris. 



Name. Locality. 



17. lone. Senegal. 



Thestias. 



18. Mariamne. India. 



19. Venilia. Java. 



Euterpe. 



20. Swainsonii. Brazil. 



21. Charops. Mexico. 



Eronia. 



22. Argia. West Africa. 



23. Valeria. North India. 



Hebomoia. 



24. Glaucippe. China ; India. 



hist of all the Species drawn by Mr. Sidebotham. 



Spec. name. Habitat. 



6. Lypera. Venezuela. 



7. Pyrrha. 



PlERIS. 



Spec. naTne. Habitat. 



1. Hirlanda. Bengal. 



2. Sylvia. West Africa. 



3. Paulina. Java. 



4. Lorena. Quito. 



5. Coronea. Java. 



Brazil. 



8. Monuste. West Indies. 



9. -Gidica. Senegal. 



10. Charina. South Africa. 



11. New species. Celebes. 



