TURTOX NEWS 



147 



_Bm 



3 m 



Sections of representative skins. Above, Amphioxus : middle, Shark: below, Perch. 

 These drawings are reproductions of actual sections, although some features have been 

 made semi-diagrammatic to lend clarity to the figure. Note the very young shark scale in 

 a definite epidermal follicle, also a cross section near the tip of a fairly mature scale. 

 E. Epidermis. G. Glands. M. Muscle. P. Pigment cells. PC. Pulp cavity. S. Septum. 



Ar. Areolar tissue. Bm. Basement membrane. D. Dermis. Df. Dense fibrous tissue. 

 Sc. Scales. 



