32 Transactions of the Academy of Science of St. Louis 
pattern before ecdysis, followed by a corresponding bright- 
ening of the pattern and paling of the coloration after ecdysis. 
San Francisco Alligator Lizard 
Gerrhonotus coeruleus coeruleus 
Because of the relatively uniform climate in its range this 
lizard apparently does not hibernate completely. Van Denburgh 
(1922, p. 445) tells of five being found hibernating in decaying 
logs at Pescadero, San Mateo County, on December 22 1893, 
but he does not describe the condition of the lizards. During 
1932 
In spite of the long growing season in west-central California 
several years evidently are required for an individual to attain 
t 
ea 
companying table based on specimens taken at Daly City shows 
roughly the rate of growth. 
Table showing sizes of young Gerrhonotus c. coeruleus taken at 
Daly City, San Mateo Co., California 
(Head and body lengths in mm.) 
First year young Second ee 
August 31, 35, 38, 36, 36 55, 56, 58 
September 35.5, 39, 39, 40, 41.5, 36, 36, 36, 39, 41, 41 64, 64, 67, 74 : 
January 41.5, 47 67 4 
Febtuary 38, 42, 43, 43 : 
March 43.5 50 a 
April 41, 48 56, 56, 57, 59, 60, on9 
