464 THE AMERICAN NATURALIST [Vol. XLII 



Data bearing upon the relation of this variation to 

 environment, food, moisture, etc., are entirely wanting. 

 The red specimen taken near Buffalo was at an altitude 

 of 1,000 feet above sea level. That near Beesemer, 800 

 feet. Individuals kept in the terrarium under entirely 

 different conditions than those from which they were 

 taken in nature never change in coloration so far as I can 

 determine, which indicates that the variation is inde- 

 pendent of the nervous system. The age of the indi- 

 vidual seems to have no relation to variation. Among 

 adults of all sizes the different intermediate forms are 

 found. There are in the collection of Cornell University 

 about a dozen specimens taken soon after transformation. 

 They are all typically of either the variety cinereus or 

 erythronotus except one which varies decidedly towards 

 the red form. 



