372 Illinois State Laboratory of Natural History. 



Amblystoma jeffersonianum, Green. 

 Var. platineum. 



Amblystoma jdatineinn. Cope, Proc. Acad. Nat. Sci. Phila., 1867, 



p. 198. 

 Amblystoma Jeff'ersoniani! Ill , snhsip. pta tin in in, Davis and Rice, 



Bull. III. '«tate Lab. Nat. Hist., I., No. 5, 1883, p. 11; Bull. 



Chicago Acad. Sci., 1883. 



Var. fuscum. 



Amblystoma fuscum, Hallowell, Proc. Acad. Nat. Sci. Phila., 



1857, p. 216. 

 Amblystoma jeffersonianum, Yav./uscirm, Cope, Proc. Acad. Nat. 



Sci. Phila., 1867. 

 AvMystoma Jeffersonianum, snhs'p. fasetim, Davis and Rice, 



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



Var. laterale. 



Amblystoma laterale, Hallowell, Proc. Acad. Nat. Sci. Phila., 



1856, VIII., p. 6. 

 Amblystoma jeff'ersoiiianiint, var. laterale. Cope, Proc. Acad. Nat. 



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



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

 Balamandra Jeffersoniana, Green, Contr. Macl. Lye. to Arts and 



Sciences, 1827, 1., p. 4. 

 Amblystoma Jeff ersoniamtm, Cope, Proc. Acad. Nat. Sci. Phila., 



1867, p. 195. 

 Amblystoma Jeffersonianum, subsp. Jeffersonianum, Davis and 



Rice, Bull. 111. 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, snout 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 in 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 pale 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. 



