Vol. X] VON GELDERN—SKIN OF ANOLIS CAROLINENSIS 117 



Plate 9, Fig. ii (Oil immersion) 



Vertical section of a lateral scale in the green state, stained 

 with haemotoxylin and eosin showing the various layers of the 

 epidermis and corium. Small amounts of pigment appear in the 

 terminal branches of the melanophores but the mass appears in 

 the cell bodies. 



Plate 9, Fig. 12 (Oil immersion) 



Vertical section of a lateral scale in the brown state stained 

 with haemotoxyhn and eosin showing the pigment lying just 

 beneath the epidermis. 



Plate 9, Fig. 13 (Oil immersion) 

 Vertical section of a dorso-lateral scale in the brown state 

 stained with haemotoxylin and eosin showing the pigment cells (P) 

 and a blood vessel, lying just beneath the connective tissue layer, 

 sending a branch through all the layers and which ends just 

 beneath the epidermis. The leucocytes are evident. 



Plate 9, Fig. 14 (Oil immersion) 

 Tangential section of a lateral scale in the brown state showing 

 the pigment in the terminal branches of the melanophores (T), 

 the pigment just beneath the epidermis (E), the leucophores with 

 their bizarre outlines (L), the secondary branches of the melano- 

 phores piercing the openings between the melanophores (S), and 

 the bodies of the melanophores with their primary branches (M). 



Plate 8, Fig. 15 (Oil immersion) 



(A). Melanophores occasionally found showing a central migra- 

 tion of the pigment in the body of the cell, forming a rounded mass 

 surrounded by a halo of clear cytoplasm. 



(B). Melanophores frequently found showing an ahnost com- 

 plete proximal migration of the pigment. Practically no pigment 

 exists even in the primary branches. The nuclei are evident. 



Plate 9, Fig. 16 (Oil immersion) 

 Pigment cell seen from above. These cells are found in the 

 spaces between the scale and throughout the entire body. In 

 vertical section these cells appear flat. 



Plate 7, Fig. 17 

 Reconstruction of the skin of Anolis carolinensis showing the 

 essential elements necessary for the production of the color states, 

 namely, the epidermis, yellow oil droplet layer, zanthophores, 

 leucophores, and melanophores. 



