Hay Batrachians and Reptiles of D. C. 



123 



FIG. 1. Topography of the salamanders and frogs, eg, costal grooves; 

 fi, fingers; to, toes; gf, glandular folds; , vomerine teeth; pa, parasphe- 

 noid teeth; c, choanae; d, adhesive disks; h, heel; t, tympanum. 



Key to the Species of Caudata. 



a. Body eel shaped; hind limbs absent; Siren lacertina, 1. 



aa. Body salamander-shaped; all 4 limbs present. 

 b. Toes 4 in front and 4 behind. - - Hemidactylium scutatum, 3. 

 bb. Toes 4 in front and 5 behind. 

 c. Parasphenoid teeth present. 



d. Tongue mushroom-like, attached by a central stalk only. 

 e. Costal grooves 13 or 14. 



/. Tail not much, if any, longer than rest of animal; yellow 

 ish, back with median row of dots, and two dusky bands. 



Spelerpes bislineatus, 6. 

 ff. Tail considerably longer than rest of animal. 



g. Yellow, with many black spots; tail with black cross 

 bars. \\- ...-' -.. v. - Spelerpes longicaudus, 8. 

 gg. Yellow, back with a broad median and two lateral 

 bands; tail with yellow cross lines. 



Spelerpes guttolineatus, 7. 

 ee. Costal grooves 15 to 17; red, with many small black dots. 



Spelerpes ruber, 9. 



dd. Tongue attached by a median longitudinal band running from 

 the central stalk to the tip, therefore extensively free only 

 at the sides. 



Ji. Costal grooves 16 to 19. Color dark ashy or brown, with or 

 without a rusty dorsal band. - Plethodon cinereus, 4. 

 hh. Costal grooves 14. 



i. Black above, with small white dots. Plethodon glutinosus, 5. 

 ii. Brownish, variously mottled and marbled with darker and 

 ocraceous. - Desmognathus fusca, 10. 



ee. Parasphenoid teeth absent. 



j. Tongue small, free at the sides; a medium sized species, green 

 ish or red, belly yellow with many black specks. 



Diemictylus viridescens, 11. 



