Scales of Beetles and E 



Plate 4. 



C 



1. Weevil, natural size. 2. Scales of Weevil, magnified 100 diameters. 



3. Scales of Green Weevil, magnified UO diameters. 4. Scale of Perch, magnified 4 diameters. 

 5. Lines on Perch's scale, magnified 100 diameters. 6. Scale of Sole, magnified 9 diameters. 



7. Piece of Eel's Skin, magnified 4 diameters. 

 8. Upper and under layers of Eel -skin, and Eel scales. 9. Scale of Eel, magnified 50 diameters. 



