AMPHIBIANS AND REPTILES. 87 
with upper overlapping edge of mandible when mouth closes. 
Lower lip firm, though rather thick. When viewed below mouth 
broadly convex, with more constricted convexity of upper jaw 
projecting in front. Front of upper jaw when viewed in front 
with a slight emargination medianly into which a corresponding 
low process of mandible at symphysis fits, and labial edge on each 
side of latter slightly and shortly emarginate. Teeth none, edge 
of jaws or lips firm, and acting as a tough cutting edge. Tongue 
Toad. Bufo lentiginosus (Shaw). 
large, fleshy, surface finely papillose, only attached in front, 
behind and sides entirely free. Internal nares more or less con- 
cealed by superior buccal fold, placed a little further apart than 
external nostrils, and rather large. External nostrils rather 
large, a little high on front side of blunt snout, falling a little 
nearer eye than emargination in middle of front of upper jaw. 
Internasal space nearly level, and a little greater than bony inter- 
orbital space, or about half of eye-ball. Interorbital space nar- 
row over bony area, with concave surface and ridges on each side 
