A KEY TO THE SPECIES OF FROGS AND TOADS 
LIABLE TO OCCUR IN NORTH CAROLINA 
c. s. brimley 
1. Upper jaw without any teeth. 2. 
Upper jaw with teeth. 5. 
2. Skin smooth. Size small. Snout pointed. No para- 
toid glands (just behind ear). Hind feet not webbed. 
Toothless Frog {Fngy stoma carolinense) . 
Skin vrarty. Paratoids large. Hind feet little webbed. 
Head with bony ridges above. Toads. 3. 
3. Size small, length of head and body one inch. Skin 
very rough. Bony ridges turning inward almost at 
right angles just back of the eyes. Dwarf Toad ( Bufo 
quercicus ) . 
Size larger, adults about 3 or 4 inches long. Skin not so 
rough. Bony ridges on top of head not turning abruptly 
inward back of eyes. 4. 
4. Bony ridges ending in a knob behind. Southern Toad 
( B . lentiginosus ) . 
Bony ridges not ending in a knob behind. Common 
Toad ( B . /. americanus). 
5. Paratoids present. Hind feet webbed. Heel with a flat, 
sharp edged spur. Solitary Spadefoot Scaphiopus hol- 
brooki ) . 
Paratoids absent. No sharp edged spur on heel. 6. 
6. Fingers and toes dilated at their tips, this dilation 
forming a viscous disk. Tree frogs. 7. 
Fingers and toes not much dilated at tips. 13. 
1907 ] 
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