Vol. II, Pt. I] VAN DENB URGH—SLEVIN—GALAPAGOAN LIZARDS 



145 



brick red proximally, lighter grayish distally. Antehumeral 

 spot black. 



Variation. — There is much variation in the size, number and 

 arrangement of the head scales. The characteristic coloration 

 in the males is fairly constant. Females show few or no 

 black markings, though traces of them may often be made out 

 as spots of brown darker than the ground color. The belly 

 usually is slaty or bluish gray, sometimes yellowish. Many 

 females have the head and sides of neck suffused with brick 

 red. The number of scales around the middle of the body 

 varies from 83 to 101 ; in the crest from 46 to 61 ; and along 

 the belly from 70 to 85. Variation in these respects will be 

 found in the following: 



TABLE OF SCALE COUNTS— Abingdon Island 



