Explanation of Plate E. 



Plume-scales of Pierixae. 



Fid. 1. Teracolcs phlegyas. Fig. 6. Leuceronia pharls. 



2. „ chrysonome. 7. Eronia cleodora. 



3. „ ERis. 8. Euchloe euphexo. 



4. Ptychopteryx (Eronia) 9. Daptonura lycimnia. 



LUCASII. 10. PiXACOPTERYX LILIANA. 



5. Nepheronia phocaea. 



The scales represented in this plate are drawn only in outline, and 

 are magnified about 260 diameters. 



Tlie figures show the large size of the disc in the purple-tipped 

 and protomedia groups of Teracolus ; the curiously attenuated scent - 

 scale of T. eris; the differences characterising the three kinds of 

 "Eronia" ; the remarkable and unique scale of '■^Ptychopteryx" 

 (or "^rorna") hicasii; the peculiar hair-like plumule of Etichloe 

 eupheno ; the still more hair-like scent-scales of Daptonura ; and 

 the flask-shaped lamina with large oval or figure-of-eight-shaped 

 disc found in Pinacopteryx lilianw. 



