144 VERTEBRATE ANIMALS OF THE UNITED STATES 



b2 Tongue free at its anterior margin, being attached by 

 a central pedicle (Fig. 77). 

 Ci Toes not webbed. 



di With a light line running from the eye to the 



nostril 11. Gyrinophilus. 



d2 No such hne present. 



61 Vomerine teeth continuous with parasphenoid 



teeth; color red 12. Pseudotriton. 



ea Vomerine teeth separate from the parasphenoid 



teeth (Fig. So) 13. Eurycea. 



C2 Toes webbed 14. Hydromantes. 



I. Desmognathus Baird. Body of medium or small size; tongue 

 attached, except by its lateral margins; premaxillaries united; vertebrae 

 opisthocoelous; vomerine teeth wanting in adult males of some species; 

 a light line from the eye to the angle of the mouth: 3 species. 



Key to the Species of Desmognathus 



ai Belly mottled D. Juscus. 



a2 Belly uniformity colored. 



bi Belly black D. quadramaculatus. 



b2 Belly light D. phoca. 



D.fuscus (Rafinesque) (Fig. 72). Body rather stout, brown above, 

 mottled below; length 115 mm. ; tail 58 mm. ; costal grooves 14; vomerine 

 teeth not present in mature males; parasphenoid teeth in 2 separated 

 patches: southern Canada to the Gulf; westward to Illinois, Tennessee 

 and Louisiana; common. 



Key to the Subspecies of D. fuscus 



El Semiaquatic forms; tail keeled above. 



bi In the northern, central and eastern states D. f. fuscus. 



b2 In the South Atlantic and coastal plains D. f. auriculatiis. 



ba West of the Mississippi D. f. hrimleyorum. 



a2 Terrestrial forms; tail cylindrical; size small. 



bi Back mottled: southern Blue Ridge D. f. carolinensis. 



b2 Back with a regular pale stripe: mountains of West Virginia 



to New York D.J. ochraphceus. 



Subspecies of D. fuscus 



D. f. fuscus (Raf.). Belly light; no spots on the sides: New Bruns- 

 wick to Gulf Coast and southeastern Virginia, except in the higher 

 mountains. 



D. f. aiiriculatus (Holbrook). Belly dark; a row of light spots on 

 the sides: coastal plain of the Atlantic and Gulf from Virginia to 

 Florida. 



