196 



PLATE I. 



Figures all four times the natural size. 



Figure 1. Open mouth of Amhy stoma microsfomum. 



Figure 2. Open mouth of Plethodon glutinosus. V. L, the vomerine teeth ; p. L, the 

 parasphenoidal bands of teeth. Above the vomerine bands are seen 

 the choana?. 



Figure 3. Open mouth of Spelerpes longicaudm, shoviivg the vomerine and parasphe- 

 noidel teeth and the tongue. 



Figure 4. Roof of the mouth of Spelerpes maculicaudu!^ ; v., the hook-shaped bands 

 of vomerine teeth; p., the parasphenoidal bands. 



Figures. Open mouth of Desmognathus fusca; ch., the choanse; v., the vomerine 

 _ teeth ; p., the parasphenoidal teeth ; L, the tongue. 



Figure 6. Open mouth of Diemyctylus viridescens, showing the two rows of vome- 

 rine teeth arranged in /\-form. 



