MAYER. — Wing Scales, 
PLATE 2. 
Figures 5, 6, Samia cecropia. Figures 7, 8, Vanessa antiopa. Figures 9, 10, 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8 
Fig. 9 
Fig. 10 
Danais plexippus. ’ 
Portion of a longitudinal section through the pupal cuticula and wing 
tissue. Specimen killed in January. 
Perspective view looking down upon the wing tissue of the young pupa, 
the cuticula having been removed. 
Portion of a longitudinal section through one of the young pupal wings 
of a summer chrysalis. Age not known. 
Portion of a longitudinal section through one wall only of the pupal 
wing of a specimen slightly older than that of Figure 7. 
Portion of a longitudinal section through a pupal wing about eight days 
before emergence. 
Portion of a longitudinal section through one of the pupal wings about 
eight days before emergence. Viewed under a low magnification. 
