13. PHRYNOSOMA 379 



and upper surfaces of limbs with scattered, large, more or 

 less erect, keeled, tubercular scales ; skin between these cov- 

 ered with smaller scales and granules. Body with fringe 

 of one series of peripheral spines. Chest and belly and 

 lower surfaces of hind limbs and tail covered with small, 

 smooth scales. Tympanum either naked or scaled. Long 

 series of from 13 to 17 femoral pores, sometimes almost 

 meeting medially. Males sometimes with enlarged pos- 

 tanal plates. 



The back is olivaceous, yellow, brown, gray or reddish 

 with large, undulate, more or less indefinite dark blotches. 

 These blotches vary greatly in intensity but are almost 

 always edged posteriorly with white, gray, or yellow. There 

 is a large dark blotch on each side of the neck. The color- 

 ing of the tail is similar to that of the back. The ground 

 color of the head is very variable, but it often is gray or 

 yellowish olive, the temporal regions may be pink or red. 

 The entire lower surface is white or pale yellow, sometimes 

 faintly marked with gray or slate. 



Length to anus 24 46 58 60 60 61 



Length of tail 9 25 29 30 25 28 



Snout to ear 6 12 15 15 14 15 



Width of head 8 14 16 17 17 18 



Length of occipital 



spine i \y 2 \y 2 \y* \ I A 



Fore limb 12 20 25 24 24 24 



Hind limb 16 26 34 33 33 33 



Base of fifth to end of 



fourth toe 5 8 10 10 10 10 



Remarks. I regard this subspecies as but doubtfully 

 worthy of separation from typical P. d. douglassn, but since 

 my specimens of P. d. douglassn are too few to enable me 

 to form an independent judgment, I have been guided 

 largely by the opinions of others. These are set forth as 



