372 Illinois State Laboratory of Natural History. 



Amblystoma jeffersonianum, nreen. 

 V'ar. platineum. 



AmlilystniJKi jilatineum, Cope, l?roc. Acad. Nat. Sci. Phila., 18G7, 



p'. 198. 

 Amhlystonta Jeffn-sonianitm, suhsTp. platineu7n, Davis and Rice, 



Bull. 111. State hab. Nat. Hist., I., No. 5, 1883, p. 11; Bull. 



Chicago Acad. Sci., 1883. 



Var. fuscum. 



AtnblystouKt fnsmim, Hallowell, Proc. Acad. Nat. Sci. Phila., 



1857, p. 216. 

 AmhlystoDKt j(^fferiion.i(in inn, var. fuscum. Cope, Proc. Acad. Nat. 



Sci. Phila., 1867. 

 A})iblystot)ia Jtffcrmnidnum, sahs'p. fuscuDi, Davis and Rice, 



Bull. 111. "state Lab. Nat. Hist., 1., No. 5, 1883, p. 10. 



Var. laterals. 



AmhlystouKc lateraje, Hallowell, Proc. Acad. Nat. Sci. Phila., 



1856, VIII., p. 6. 

 Amblystoma jeffcrsonianu in, \^x. taterale. Cope, Proc. Acad. Nat. 



Sci. Phila., 1867, p. 197; Davis and Rice, Bull. 111. State Lab. 



Nat. Hist., I., No. 5, 1883, p. 10; Bull. Chicago Acad. Sci.. 1883. 

 Salamandra jiff'trs(miana, Green, Contr. Macl. Lye. to Arts and 



Sciences, 1827, 1., p. 4. 

 Amblystoma JeJ/'t^rsonianum, Cope, Proc. Acad. Nat. Sci. Phila.. 



1867, p. 195. 

 Amblystoma jifffersonlanum, subsp. Jcffirsoiiiauum, Davis and 



Rice, Bull. III. State Lab. Nat. Hist., I., No. 6, 1883, p. 10. 



Extreme length from about four to six inches. With 

 twelve costal grooves. No or one indistinct plantar tubercle 

 Body rather slender. Head elongate, saout obtuse. Tongue 

 large. Palatine teeth in four series, the median two nearly 

 straight or arched forwards. Eyes large and well forwards. 

 Mucous pores present on sides of head. Tail shorter than 

 body, oval iu section at its base, gradually compressed toward 

 the tip. Legs rather strong ; toes long and but slightly 

 depressed. 



Color gray, dark brown or black, with })ale blue spots on 

 the sides, or with numerous small or large pale spots on the 

 sides and a few small ones on the belly, or with no spots and 

 with a dark shade along the sides. 



