80 BARBOUR — A NEW LIZARD rvJi^Vlf' 



Diagnosis. — Size large; habit stout; tail cylindrical, longer than head 

 and body; many frontal scales, all large, equal to the supraoculars, or even 

 larger, and not separated from them by many much smaller scales as in 

 Holbrookia propingua. No black spots under tail; sides with oblique 

 black spots. 



Description of the type. — Head moderately large, somewhat depressed; 

 nostril moderately large, directed upward and outward; head scales rather 

 large and smooth; on the frontal region a triangular area covered with 

 large irregularly squarish scales which are separated from the supraoculars, 

 of similar or slightly smaller size, by a number of still very slightly smaller 

 scales — thus the head scales are not sharply differentiated on snout, fore- 

 head or above the eyes; occipital large, roundish; a long infraorbital; six or 

 seven very oblique, narrow supralabials; dorsal scales small, irregularly 

 hexagonal, some distinctly keeled; edge of gular fold somewhat denticu- 

 lated; limbs moderately long, the appressed hind limb reaching the tip of the 

 snout; foot as long as distance from axilla to groin; fourteen femoral pores; 

 male with enlarged postanal scales ; tail cylindrical, much longer than head 

 and body. 



Color. — Brown above with tiny white flecks; a double dorsal series of 

 darker blotches; lower surfaces white; two large obUque blue-black lateral 

 spots; tail above light brown with transverse chevron-shaped markings, 

 beneath white. 



Total length, 132 mm.; head, 15 mm.; width of head, 9.5 mm.; body, 

 56 mm. ; fore limb, 26 mm. ; hind limb, 47 mm. ; tail, 76 mm. 



This species obviously is related to Holbrookia propinqua B. 

 & G., but differs from it conspicuously in color and in the 

 arrangement of the head scales. In the latter character the two 

 are so unlike as to make it very improbable that we are dealing 

 with a geographic race or subspecies, rather than a full species. 



