34 HERPETOLOGY OF MICHIGAN. 



cinereus aud P. cinereus var. crythronotiis, which have both been re- 

 ported from Michigan. There are no apparent differences in struc- 

 ture, proportions and general character between these two forms. 

 The distinction is entirely one of color, erythronotus having a red 

 dorsal stripe, cinereus an ashy one. Also, the writers have found 

 the two varieties in the same region, and not infrequently in one 

 log. Without doubt the differences in color are onlv individual. 

 Distrihution: Eastern United States. (Jordan, 1899.) 

 Michigan : Specimens in the University' Museum from Ontona- 

 gon, Baraga, Dickinson, Cheboygan, Benzie, Manistee, Huron, Ing- 

 ham, Washtenaw and Lenawee Counties. The writers have also 

 examined specimens from Gratiot and Eaton Counties. Reported 

 from Eaton County (Clark, 1902) ; Wayne County (Cope, 1889) ; 

 Eaton, Montcalm and Antrim Counties (Gibbs, Xotestein and 

 Clark, 1905) ; Ontonagon County (Ruthven, 1904a) ; Ontonagon, 

 Baraga and Marquette Counties (Ruthven, 1906) ; Cheboygan 

 County (Ruthven, 1911) ; Hurou County (Ruthven, 1911a) ; Wash- 

 tenaw County (Smith, 1879; Smith, 1882). 



HEMIDACTYL.IUM SCUTATUM (Schlegel). 



FOUR-TOED SALAMANDER. 

 (PI. I.) 



Description: Body short and cylindrical. Head broad, muzzle 

 blunt, upper jaw projecting over lower. Eyes large. Gular fold 

 distinct but not prominent, and rising on the sides of the neck. 

 Another dei)ression extending from the eye to the gular fold. Skin 

 Avith slight deju-essions that give it a scuted appearance. Thirteen 

 distinct but not prominent costal grooves. A dorsal groove and a 

 slight depression extending along the sides from limb to limb. This 

 lateral depression forks anteriorly and sends out a branch to the 

 middle of the head between the eves. Limbs verv slender but well 

 developed. Toes four in number, the inner toe and inner and outer 

 lingers rudimentary; third toe the longest. Tail very long, sepa- 

 rated from body by a distinct depression, slightly compressed, 

 large at base and tapering gradually to a point. Yomero-palatine 

 teeth in two series just behind internal nares. Parasphenoidal 

 ])atches distinctly separated. Tongue attached anteriorly, and 

 slightly free posteriorly. 



Ground color dark brown, spotted with darker color, and becom- 

 ing dark gray on the sides. Limbs, snout and tail lighter in color 

 than back, and blotched with dark above. Small light spot on 

 shoulder just above arm. 



