THE GENUS CNEMIDOPHORUS. 37 



Loreal longer than high. Small scales above anterior canthus of eye numerous and 

 rather prominent. The keels of the caudal scales are prominent, and except at the 

 base of the tail, in continuous lines. 



The color of the upper surfaces in the adult is a dove brown. This is marked 

 on the back by three series of transverse black spots, which are well separated from 

 each other. In one specimen the spots are very narrow ; in another they are nearly 

 obsolete on the anterior part of the back. On the sides similar black spots are more 

 or less confluent into vertical black stripes. The head and fore legs are uniform 

 brown above ; the hind limbs have on a similar ground narrow blackish crossbars, 

 sometimes indistinct. Tail pale brown above with olive and brown spots. Inferior 

 surfaces straw colored tinged with green, and varied with black and red. The 

 abdominal scuta are black bordered, and the throat is black spotted, sometimes 

 strongly, sometimes faintly. The palms and sometimes the entire inferior surface of 

 the anus is a bright vermilion. Posterior and inferior sides of femora, inferior aspect 

 of tibia, and inferior side and distal half of tail bright vermilion. 



The young specimens have traces of six longitudinal stripes of an olivaceous or 

 light brown color, and the spaces between them are crossbarred with black and 

 olive, as in the C. gularis mariarum, which this form closely resembles at this stage. 

 The black spots become more distinct with age, and the interspaces blend completely 

 with the stripes, so that the latter are ultimately completely lost in a common ground 

 color. The femora are reticulated with black on an orange ground above. The black 

 and red of the inferior surfaces are not so pronounced as in the adult. 



Measurements. M. 



Total length 340 



Length to posterior edge of ear 024 



Length to collar 034 



Length to vent 100 



Length of fore limb 035 



Length of hind limb 072 



Length of hind foot 036 



Cnemidophorus tessellatus rubidus Cope. 



Catalogue Nurnber. 



Number Specimens. 



Locality. 



Whence obtained. 



15,149 

 50 

 1 

 2 

 3 

 4 

 5 





St. Margareta Id., Lower Cali- 

 fornia. 



U. S. Fish Commission Steamer 

 Albatross. 



