80 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



body even in the dark brown state. This patch appears during 

 the time when two males are preparing for combat and is asso- 

 ciated with the appearance of the mid-dorsal ridge, the lateral 

 flattening of the abdomen and thorax, the extension of the legs so 

 that the body is raised off the ground, and by a peculiar greenish 

 mottling of the skin. The altered appearance of this animal pre- 

 paring for combat, in color, form and action, shows such marked 

 changes, that it is difficult to associate it with the animal under 

 ordinary conditions. Even the eyes, which ordinarily are fairly 

 prominent, recede so that the palpebral fissures show only the 

 pupils. The movements are slow and awkward and the body may 

 sway from side to side in a most fantastic manner. 



In general, the peppering of white spots on the dorso-lateral 

 aspect of the body is characteristic, especially during the brown 

 state, and these spots may be confluent on the lateral aspect of the 

 cervical region. The lower border of the maxilla, the entire man- 

 dible, and the ventral aspect of the entire body varies from a 

 snowy white to dirty brown, gray, or peppered with black dots. 

 The throat -fan when extended is a brilliant pink or vermilion and 

 over it are scattered many white spots. When relaxed, the skin 

 of the throat region is somewhat cream colored or white with 

 reddish streaks at times. 



The following table indicates the various colors noted in different 

 specimens at the same time and in the same specimen at different 

 times: 



Table Showing Range of Colors in Various Areas 



OF THE Body 



I Dorso-lateral aspect: 

 A Diffuse: — 



a. Golden yellow to straw yellow. 



b. Emerald green to dirty bluish green. 



c. Slaty gray of various shades. 



d. Light brown to dark mahogany brown. 



B Mottled:— 



a. Yellow with irregular patches of green. 



b. Yellow with irregular patches of brown. 



c. Emerald green or pea green with irregular areas of darker 



green to brown. 



d. Green or brown (usually the latter) peppered with white or 



hght turquoise blue spots. 



