286 ANNIE H. PR1TCHETT. 



15. Phiynosoma cor/nttiun, though apparently quite tame, 

 seems at first rather shy about eating in confinement. Ants, 

 especially the agricultural ants (Pogonomyrmex} t are its only 

 known food. 



1 6. Crotaphytus is not accurate in seizing its prey. It often 

 fails repeatedly and gives up the attempt. 



17. The larger lizards were several times suspected of having 

 eaten smaller specimens that had been placed in the same cage. 



1 8. Crotaphytus soon becomes quite tame and enjoys being 

 petted. The smaller ones crawled upon my hand in the cage 

 and refused to be put down. 



19. The largest Crotaphytus shed its skin during the night of 

 May 6. Next morning the sand in the cage was very much 

 dug out and heaped up, but no traces of the skin could be found. 



20. A Gerrhonotus shed during the night of April 29. The 

 old skin was turned wrong side out and probably came off nearly 

 whole, though several parts were broken when it was found next 

 morning. A second lizard shed May 22 and I watched it pull 

 the old skin off wrong side out by creeping round and round 

 the cage close to the sides. The skin was loosened first from 

 the upper and lower jaws along the sides of the mouth, and be- 

 gan to peel off backward by the lizard's rubbing its head against 

 the sand on the bottom of the cage. 



BIBLIOGRAPHY. 



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