192 Trans. Acad. Sci. of St. Louis 
a very interesting dance for his captor before he was taken. After 
having been pursued across two wide boards in a scrap pile, the 
lizard was allowed to halt while his imi knelt opposite him and 
talked in soothing tones. The lizard’s first reaction was to inflate 
himself to the full extent of his ability in an attempt to create a 
ormidable appearance, then, stiffly bracing his body, he opened 
his mouth threateningly. When slowly approached he reared high, 
heels began simultaneously to raise all his toes into the air and pat 
them on the board in jerky movements. This performance was 
continued until he had ‘ants approached to within 30 inches, when 
he began to sway his body violently from side to side while stand- 
ing with all feet firmly planted. After about e such jerky move- 
ments he flashed out of sight beneath a board, where he was cap- 
tured. In captivity he exhibited a viciousness heraails of the 
species. Hysterical attempts to flee when approached and a beau- 
inches into the air at the photographer’s fingers. ee Figs. 1 
and 2.) Few aves specimens have evinced an interest in food, 
u. 
a Cnemidophorus sexlineatus sexlineatus, neither of which was 
eaten. 
sacgrmiyé snl gieceuat undulatus (LATREILLE)—The fence 
lizard is the m ommon lizard in Jefferson County and is abun- 
dant alae: ee specimens have been collected at Festus, 
Goldman, Hillsboro, Kimmswick, Barnhart, Danby, Sulphur Springs, 
Glen Park, Riverside, Bushburg, Antonio, Montebello, Beck, Pevely, 
DeSoto, F letcher, Big River Heights, Pacific, and House petit 
is species is apparently able to endure much lower temperatures 
than other lizards occurring here and can be found abroad on favor- 
able days from February 10 to November 15. It has a dance which 
it employs during the mating season and at other times of emo- 
tional disturbances, such as contemplation of food when hungry, 
exhibitions of fear or anger when approached, contemplation of 
rigidly out from the body. Most insects of suitable size seem ac- 
ceptable as food in captivity. 
Ophisaurus ventralis (LivnE)—The joint snake or glass snake 
is moderately common ig Jefferson County, seeming to prefer worn- 
out meadows and abandoned fields, probably because of the greater 
ease in burrowing im ‘e. All our specimens ye sor collected at 
Kindinavick. Sunnyside, and Sulphur Springs in eastern exposures, 
