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



161 



Variation. — The two sexes from this island differ more 

 than in other species; but there is little variation among the 

 females, and still less among the males. The females all agree 

 in having the black blotch in front of the shoulder and brick 

 red coloring of the throat, which in some specimens extends 

 down to the under surface of the shoulders. The males show 

 little or no variation. Some specimens show red on the sides 

 and the under surface of the tail. They all agree in the black 

 throat and scattered black markings extending down past the 

 shoulders. Specimens from Gardiner-near-Hood are like 

 those from Hood. A few females taken there show a darker 

 red, but this is not constant. 



The interoccipital usually is as long as wide, but in a few 

 specimens is wider than long. Scale counts are shown in the 

 following table: 



TABLE OF SCALE COUNTS— HooD ISLAND 



