12 HERPETOLOGY OF MICHIGAN. 



ities, or (b) of which specimens have been examined by competent 

 authorities, or (c) that have been reported to us by reliable observ- 

 ers who could unmistakably describe them. We have rigidl}^ ex- 

 cluded all records by persons who possibly did not know the forms 

 in question. It is believed, therefore, that the work is reliable as 

 far as it goes, and, altho it is of course incomplete, for there are 

 large areas in the state from Avhich no or only a few records have 

 been obtained, we trust that it will serve as a basis for future work 

 and as an incentive to further investigation. It should be added 

 that all descriptions of species are based on Michigan specimens 



unless othei^wise stated. 



Januarv 1, 1912. 



