AMPHIBIANS 157 



teeth in 2 patches which are confluent anteriorly; vomerine teeth 

 always present: Virginia to Georgia, in the mountains; the most 

 aquatic of the genus. 



D. monticola Dunn (Fig. 73). Body large, uniformly colored, 

 more or less mottled, with a light belly; tail long; length 135 mm.; 

 tail 71 mm.; costal grooves 13 or 14; vomerine teeth always present; 

 parasphenoid teeth in 2 patches, confluent anteriorly: Virginia and 

 West Virginia to Georgia; in the mountains; common. 



D. ochrophcBa Cope. Body small; tail without keel; color variable, 

 with a very dark, broad lateral band; length 94 mm.; tail 46 mm.; 

 costal grooves 14; vomerine teeth absent in adult male; parasphenoid 

 patches separated: New York to Georgia; habits terrestrial. 



Subspecies of D. ocJirophcca 



D. 0. ochrophcea Cope. Belly very light; back light in young and 

 black in old specimens: New York to Maryland. 



D. 0. carolinensis Dunn. Belly dark; a tubercle at the anterior 

 angle of the eye: West Virginia to Georgia; in the mountains. 



2. Leurognathus Moore. Body of large size; internal nares very 

 inconspicuous and twice as far apart as the nostrils; vertebrae opis- 

 thoccelous; vomerine teeth absent: i species. 



L. marmorata Moore. Body 128 mm. long; tail 53 mm.; para- 

 sphenoid teeth in 2 patches which touch anteriorly; costal grooves 

 13; tail keeled; color brownish above; belly black in old specimens: 

 North Carolina mountains; rare; aquatic. 



3. Plethodon Tschudi. Body slender and elongate; tongue at- 

 tached except at its lateral margins; vertebrae amphiccelous; premaxil- 

 laries separate; parasphenoid and vomerine teeth present, the 2 para- 

 sphenoid patches in contact throughout; toes 4-5: about 12 species, all 

 American. Both adults and larvae are largely terrestrial, living in 

 damp places, under stones and logs, the larvae in some species losing 

 their gills while still in the egg, and never entering the water. The 

 eggs are sometimes carried in the mouth of the female. 



Key to the Species of Plethodon 



ai Species occurring east of the Pacific slope. 



bi Color not uniformly plumbeous, and with spots or stripes. 

 Ci With a broad middorsal red stripe. 



di Costal grooves 19 P. cinereus. 



d2 Costal grooves 17 P. dorsalis. 



C2 No such stripe present; costal grooves 14. 



di Back blackish, dotted with white P. glutinosus. 



