PLETHODONTID : ONYCHODACTYLUS, HETEROTRITON. 35 
arched series ; sphenoid toothless. t. 3. f.15. Collar and lateral 
plaits distinct.— Feet long, thick.— Toes 4:5, free, clawed. The 
hinder edge of outer hind foot dilated.— Tail elongate, roundish. 
Onychodactylus Tschudi, Batr. 57. 92.; Bonap, Faun. Ital. ii. 331. 
n. 5.; Fitz. S. B. 33. 
Dactylonyx Bibron, MS. fide Bonap. 
Onycopus Dum. & Bib. MS., Erp. Gen. viii. 4. 
1, ONYCHODACTYLUS JAPONICUS. 
Purplish. Back with a broad pale streak expanded over the crown. 
Claws black. 
Onychodactylus Schlegeli Tschudi, Batr. 92. 
Salam. unguiculata Schl. Fauna Japon. vii. 65. f. 1—6.. 
Lacerta japonica G'mel. Houttuyn, Vert. ix. t. 9. f. 3. 
Lac. Thunbergii Donnd.; Thunb. N. Schw. Abh. viii. t. 4. 
Molge striata (part.) Merrem, Tent. 185. 
Onychodactylus japonicus Bonap. Fauna Ital. 11. 131. 
Onycopus Sieboldi Dum. & Bibr. MS., Erp. Gen. viii. 4. 
Ostrou. t.3.f.15. Fauna Jap. t. 3. f. 6. 
a, b. In spirits. Adult and larva. Japan. From the Leyden - 
~ Museum. 
b. Toes and Fingers not clawed. 
2, HETEROTRITON. 
_ Ffead large, depressed. Muzzle full, rounded, flattened above. 
Nostrils anterior, superior. Eyes large. Mouth large. Tongue 
broad, circular, only slightly movable on its anterior and lateral 
margin. Palatine teeth in a small group, behind each internal 
nostril. Sphenoid teeth in a large transverse group, in the 
middle of the palate. — Fore limbs short, thick. Fingers four. 
— Hinder limbs much larger. Toes five. Outer hinder toe 
fringed on its outer edge. — Tail compressed.” Holbrook. 
Triton sp. Holbrook, N. A. Herp. 85. 
Salamandra sp. Green, J. Acad. N. S. Phil. vi. 254. 
1, HerERoTRIToN INGENS. : : 
Bluish slate-coloured, with pale subovate spots. Belly slate- 
coloured. 
Salamandra ingens Green, J. Acad. N. S. Phil. vi. 254. 
Triton ingens Holbrook, N. Amer. Herp. v. 85. t. 29. 
Hab. Western Waters of N. America, Tennessee, Louisiana. 
B Sd 
