LIZARDS AND SALAMANDERS OF CANADA. 4< 



Proteidae. 



Lizurd-like forms with smooth, scaleless bodies, aquatic or 

 semi-aquatic for the whole or a part of their lives, and under- 

 going metamorphism, the young being more or less unlike the 

 adults. 



Necturus maculatus Rafinesque. 

 Mud- Puppy. 



This salamander is entirely aquatic and seems to be a form of 

 arrested development, for it retains in the adult stage the exter- 

 nal gills of the batrachian larva, and the limbs are short and 

 weak. 



Its favorite habitat is ponds and the muddy beds of rivers, and 

 like all reptile forms it presents many color-patterns accord- 

 ing to the character of the bottom on which it lives. Very dark 

 specimens are taken from streams tributary to Lake Huron and 

 in other sections of Ontario, which were described by Dr. J. G. 

 Garnier as a new species, N. hiironensis, but apart from the color 

 due to local conditions, they possess no structural variations 

 from the specific type sufficient to warrant the recognition of a 

 new species. 



The Mud-Puppy is fairly common in the neighborhood of the 

 Great Lakes in Ontario, and it has also been collected in Mani- 

 toba. It does not occur in the Maritime Provinces. Additional 

 data: Ontario (J. Macoun); common throughout Ontario Nash"). 



Amblystoma Tschudi. 



Salamanders of large size. Tongue attached by its whole base, 

 the lateral and anterior edges slightly free. Mucous pores on 

 the ante — and supra-orbital parts. Parotoid region enlarged 

 and thick. Fingers and toes free without natatory membrane. 

 Tail rather short, but deep. 



Ambly.stoma punctatum Linn. 



Great Spotted Salamander. 

 This is one of the most easily recognized of all our salaman- 

 ders, as the series of large yellow-to-orange spots on a dark back- 



