THE BATEACHIA OF NORTH AMERICA. 501 



Fig. 4. Amilystoma punctaitim, {romhe]ow ', x 2. 



5. Amhli/stoma punctatum, luTYS:, side ; 5. 



6. Amhlystoma maerodactylum, from below ; X 2. 



7. Amilystoma tigrinutn, from below ; X 2. 



8. AniMystoma epixantlmm, from above ; X 3. 



9. Amhlystoma jeffersonianum, from above; X 3. 



10. HynoMus ncevius. 



11. Banidens siMricus. 



PLATE XXVI. 



Plethodon glutinosus. skull, twice natural size. 



Fig. 1. Skull, above. 



2. Skull, below. 



3. Skull, left side. 



4. Skull with mandible, from behind. 



PLATE XXVII. 



Fig. 1-4. Autodax luguhris, skull, natural size. 



1. From left side, exterior. 



2. From above. 



3. From below. 



4. Left side, interior. 



Fig. 5-7. Manculus quadridigitatus, three times natural size. 



6. Skull, from above. 



7. Skull, from below. 



5. Skull, from left side. 



PLATE XXVIII. 



Fig. 1-3. Spelerpes longicaiida, skull, twice natural size, with cervical vertebrae. 



1. Skull, above. 



2. Skull, below. 



3. Skull, left side. 



4-6. Spelerpes Mlineata, skull, three times natural size, with three cervical ver- 

 tebrae. 



4. Skull, above. 



5. Skull, below. 



6. Skull, left side. 



PLATE XXIX. 



Spelerpes ruber, skulls of larva and adult, twice natural size. 



Fig. 1-3. Larva nearly mature. 



1. Skull and three vertebrie, from above. 



2. Skull and three vertebrae, from below. 



3. Skull and three vertebrae, from left side. 

 4-6. Skull of adult. 



4. From above. 



5. From below. 



6. From left side. 



PLATE XXX. 



(Copied from Parker. Spelerpes ruber, skulls of adult and larva, much enlarged.) 



Fig. 1-2. Spelerpes ruber, larva, younger than that represented in the last plate (xxis). 



1. Skull, from above. 



2. Skull, from below. 



