388 PROCEEDINGS OF THE ACADEMY OF [May, 



crossing of the sulci ou the upper portion of the drawing indicates 

 the presence of a small scute cut off from the fifth vertebral, a 

 slight abnormality. In fig, 6 the peripherals are numbered, ' but 

 not the marginal scutes. The ninth scute is the one lying pt.-rtly 

 on the ninth peripheral and partly on the tenth. In both figures 

 the bony sutures are represented by zigzag lines, while the sulci 

 Ix-tween the scutes are shown bv dotted lines. 



