COLUBER EXIMIUS. 73 



4. They differ in habits; the Coluber guttatus selects old fields and dry places, 

 while the Coluber eximius prefers rocky or shady spots for his abode. 



5. They differ also much in their geographical distribution; the one being 

 peculiar to the south, the other as much so to the north. 



Vol. III.— 10 



