igoy ] The Salamanders of North Carolina 151 
Pale unspotted. Southern Water Dog ( Necturus punc- 
tatus). 
5. Adults with a rounded opening- on each side of neck, 6. 
Adults without a rounded opening on each side of 
neck, 7. 
6. Body eel-shaped, with rudimentary limbs. Toes 2 or 3 
each on both fore and hind feet. Ditch Eel (Amphi- 
uma means). 
Body stout, salamander shaped. Toes 4 on fore, 5 on 
hind feet. Hellbender ( Cryptobranchus alleghaniensis ). 
7. Tongue mushroom shaped, i. e. a circular disk on a 
central stalk, 8. 
Tongue not attached by a central stalk only, 15. 
8. Toes on hind feet 4. Size very small, yellowish brown. 
Dwarf Salamander (Man cuius quadridigitatus) . 
Toes on hind feet 5. (Genus Spelerpes), 9. 
9. *Costal grooves, 13 or 14. 10. 
Costal grooves 15 to 17. 13. 
10. Tail about as long as rest of body. Yellow with a dark 
line along each side of back. Underparts unmarked. 
Striped Salamander (S. bilineatus). 
Tail 1 1-2 to 2 times as long as body. 11. 
11. Color vermilion red, with many brown spots. Tail 
spotted, not barred. Spotted tailed Trition (S. maculi- 
caudus ). 
Color yellow. 12. 
12. Underparts marbled with black. Back with a black 
stripe down middle and another on each side. Hol- 
brook's Triton (S. guttolineatus) . 
Underparts unmarked. Back and sides with irregular 
black spots. Long-tailed Salamander (S. longicauda). 
•Costal grooves are grooves on the sides indicating where the ribs are. 
