1906.] 



IN MEXICAN LIZARDS. 



357 



whole thig-h; towards the shoulders they become scarcer, and 

 further _forwar-ds they disappear, while faint traces of the original 

 pale stripes 1 and 2 remain visible. 



In very old specimens the spots are small and irregular, re- 

 stricted to the lower back, rump, and thighs, the rest of the back 

 being spotless brown with a warm reddish tint. 



Text-fio-. 80. 



C'nemidoj>ho7'ns hocourti from Oa\aca. 



There is no doubt that the original strijDes become dull and 

 merge into the ground-colour, whilst new sjjots of pale tissue 

 develop in these stripes, and a row of equally numerous spots is 

 developed in each field and below stripe 1 . The spots remain small 

 and do not become confluent. The evolution of the pattei-n is 

 the same as that of C. communis in general, but it also recalls 

 C guttatus. Structurally, however, C. hocourti forms the very 



24* 



