ANIMALS OF THE DUNES 



161 



Certain beetles go along with the cactus and are found beneath 

 its leaves, Lacon rectangularis (Fig. 164), Prasocuris phellandrus 

 (Fig. 165). All these forms 

 even invade the preceding 

 pine or bronze beetle asso- 

 ciation, and to find the 

 boreal evergreens and 

 attendant northern ani- 

 mals in close juxtaposition 

 to cactus and lizard makes 

 an unwonted contrast. 

 The six-lined lizard lays 

 its eggs in the bronze tiger 

 zone, as does also the blue 

 racer (Fig. 166), but I have 

 found the animals them- 

 selves more common in the 



FIGS. 164-165: Fig. 164. A click beetle, 

 Lacon rectangularis, found beneath cactus; 

 Fig. 165. A leaf-eating beetle, Prasocuris 

 phellandrus, same habitat. Both Xs. 



ant-lion association. Another snake, the hognose or puff adder 



FIG. 1 66. Blue racer, Coluber constrictor 



(Fig. 167), is fairly common in this ant-lion association. It is a 

 mottled animal, a foot or more in length, that spreads and 

 flattens its head into a broad triangle after the manner of the 



