578 REPORT OF NATIONAL MUSEUM, 1898. 



Thus, iu Cat. Nos. 8633 and 3048tt, the spots are transversely confluent in 

 every direction, leaving only irregular areas of the white color, now 

 become the ground. These approach nearest to the G. t. variolosus Cope 

 and represent the C. marmoraUis of Baird and Girard. In the type of 

 that supposed species a trace of the inferior stripe remains on each 

 side. The end of the fourth toe of the extended posterior foot reaches 



Fig. 108. 



Cnemidophorus tessellatus tessellatls Say, y. 



= 1. 



Cat. No. 3048, U.S.N.M. 



the meatus auditorius, and there are twenty femoral pores on each side. 

 The length of the head and body is 85 mm. ; in Cat. No. 8633 it is 

 100 mm. 



The habits of Cnemidophorus tessellatus tigris are referred to by 

 Dr. Merriam in his report on the Death Valley expedition, as follows: 



The whip-tail lizard is nearly as commou as the gridiron tail in much of the area 

 traversed, but is not so strictly confined to the Lower Sonoran Zone, ranging up a 



