58 CIIARLKS W. UAIUIITT 



ment figure sharply defined, a second was bright diffuse green, 

 the pigment figure more obscure, and the third very dark, slaty 

 brown, the figure pattern obscure. On a still later trip a single 

 specimen was found, and was bright green. The light and 

 position were the same as before. It was taken and carefully 

 wrapped in soft damp paper and carried to the laboratory. 

 When released in the experimental cage a half hour later it 

 was found to have become a very dark, almost black color. 



On a following season several trips to same locality resulted 

 in finding some eight new specimens, all occupying the same 

 positions as those of previous year. As before, there were 

 marked differences in coloration. Of three specimens two were 

 in open sunlight, and one in shade under large tree, and all 

 very light whitish in color, with the pigment pattern sharply 

 defined. Of two other specimens taken later one was almost 

 black, the other almost white. The day was warm and bright 

 in late September. In early spring, May, I found a single 

 specimen which had apparently but recently emerged from 

 hibernation. It was almost white, and presented marked con- 

 trast with the support upon which it was perched. These were 

 taken to the laboratory as before, but in a closed collecting 

 box and when released were found to be very dark. It should 

 be noted that the last specimen mentioned was taken to my 

 home and its subsequent behavior observed in a cage and in 

 my garden lot. 



From this account may be summarized the following: Of 

 the fifteen specimens of w r hich records were made, seven w r ere 

 whitish grey to pale grey ; two were bright green ; two very 

 dark brownish; four slaty to blackish. This does not include 

 several other specimens, probably about a dozen, but of these 

 no permanent records were made, and so they are left out of 

 account, except to state the general fact that they shared in 

 general the same color variations exhibited by those more 

 critically studied. It will be observed that we have here a 

 range of color from almost white, through grey, green to yellow- 

 ish, brown, slaty to almost black. Yet this range was to be 

 observed in specimens occupying the same general positions, 

 the same conditions of light and temperature, the same habitat. 

 It seems rather obvious that the diversity cannot be explained 

 by anything of an environmental nature. As will be seen in 



