REPTILIA 23:^ 



unpalatable on account of its strong musky flavor. (Clark.) Alli- 

 gators are occasionally eaten by the Southern negroes. Lacertilia 

 are important in the extermination of injurious insects and some 

 species (iguana) are utilized as food. Ophidia are in general bene- 

 ficial in exterminating harmful rodents and insects. The poisonous 

 snakes are relatively few, but cause twenty-five thousand or more 

 deaths annually, most of them in India. 



References on Reptilia 



Barbour, T. 1926. Reptiles and Amphibians. Houghton Mifflin Co. 

 DiTMARS, R. L. 1907. The Reptile Book. New York. 

 DiTMARS, R. L. 1 9 10. Reptiles of the World. New York. 

 Reese, A. M. 191 5. The Alligator and its Allies. New York. 

 Surface, H. A. First Report on the Economic Features of the Turtles 



of Penna. Zool. Bull, of the Dept. of Agr. of Penna., Harrisburg, 



Aug. -Sept. 

 Surface, H. A. 1907. The Lizards of Pennsylvania. Bull, of the 



Dept. of Agr. of Penna., Harrisburg. 



