20 Trans. Acad. Sci. of St. Louis 
Brown Scorpion, Eastern Spiny Swift, Pine Tree Liz- 
ard, Alligator Lizard, Scaly Lizard. 
Stellio undulatus—Latreille, 1802, Hist. Nat. Rept. 
2:40 (type locality, ‘‘Les grands bois de la Caroline’’). 
Sceloporus undulatus——Wiegmann, 1828, Isis, p. 369. 
Sceloporus undulatus.—Stejneger and Barbour, 1923, 
Check List N. Amer. Amph. Rept., p. 59. 
Sceloporus undulatus undulatus—Cope, 1900, Ann. 
Rept. U. S. Nat. Mus. for 1898, p. 370. 
Description—Head large and somewhat depressed; 
body moderately stout; ear opening present; no gular 
8 
Philips | Smitn | Jewen | "PIC lwasmngton| Marshall | Nemahs| ~—  [Po™Pbes 
SS 
Cloud Avclison 
Jackso: 
Cay | Ruey Pottawstamie| “kon pee ~ 
BIEL ELE ell 
‘3 
catnip el th ae IT LE Ne TRE Ninh eminem SNR et 
U 
a ali eek BR Da etn il a tne td ae ee Cems a | ha pe ee ae gt oe ae 
Fig. 3. Distribution of S. undulatus thayerii in Kansas as indicated 
by the county reports. 
fold; neck groove conspicuous; tail moderately long; 
head plates large; occipital plate very conspicuous; su- 
praoculars of medium size, bounded by a few small scales 
on each side; dorsal scales keeled and with strong pos- 
terior spines; abdominal and lateral scales smooth, with 
weak posterior spines; femoral pores present; enlarged 
post-anal plates in males only. 
Dorsal color olivaceous or brown; sides often with at 
