ANIMALS— PHYSICAL ENVIRONMENT 119 



to Miss J. Procter, of the British Museum (Natural 

 History), for her kindness in selecting these most 

 interesting Hzards. 

 Among the insects, the ants which hve in sandy 



B 



'm=^ 



Fig. 39. — Fore -FEET op the following Lizards : — A. Phrynocephalus 

 mystaceus ( x 1^^). B. Acanthodactylus scutellatus ( X 2). C. Scap- 

 tira grammica (x 2). D. CalUsaurus (Uma) scoparius. After Cope, 

 " Amer. Nat.," 1894. E. Teratoscincus scincus ( X 2). F. Stenodactylus 

 guttatus ( X 3). G. Ceramodactylus dorice ( x 3). 



and dusty places are remarkable. In very many 

 of them a " circum-oral crate " of stiff bristles is 

 developed upon the structures which surround the 

 mouth. The purpose of this is clearly not connected 



