19. VERT 1C ARIA 555 



with gray or yellowish brown. These light markings fre- 

 quently form a more or less definite middorsal light line, 

 which may be narrow or may spread and blend with the 

 other two dorsal light lines replacing nearly all of the black 

 ground color between them. The two light lateral lines 

 arise behind the superciliary line and on the suboculars and 

 run to and rarely along the base of the tail. The black 

 ground color between these lateral lines and between the 

 lower line and the ventral plates is more or less broken by 

 light dots, spots or vertical bars of the same color as the 

 light lines with which they often are connected. All these 

 light markings may be grayish, yellowish, greenish or bluish. 

 The upper surface of the head is yellowish olive. The tail 

 is greenish olive more or less mottled with yellow and black. 

 The limbs are black with large light spots; the hands 

 and feet being bluish gray, unspotted. All the lower 

 surfaces are bluish or greenish gray or yellowish, the throat 

 sometimes with transverse black markings, and the chin, 

 gular region, chest and bases of the ventral plates often 

 more or less suffused with black. 



Length to anus 63 79 90 91 92 95 



Length of tail 163 214- 245 243 242 



Snout to ear 15 19 22 23 23 23 



Snout to interparietal 



plate 13 15 17 l7*/2 17^ 18 



Width of head.... 9 12 15 15 16 16 



Fore limb __ 21 27 27 30 29 30 



Hind limb 44 51 52 58 58 56 



Base of fifth to end of 



fourth toe 20 23 24 25 26 25 



Distribution. This handsome lizard is known only from 

 Ceralbo Island, Gulf of California, Mexico. 



Remarks. This is the largest species of Vert: 

 The young resemble the other species of the genus 



:icaria. 

 genus much 



