No. 433.J SNAKES OF SOUTHERN MICHIGAN. 



23 



now is fresh evidence and much of it. Are connecting links 

 between erythrogaster and any forms of fasciata now to be 

 found anywhere ? Do erythrogaster and forms of fasciata 

 breed together ? Do the females of erythrogaster ever produce 

 any young that are not clearly young erythrogasters ? Do the 

 females of any form of fasciata ever produce erythrogasters? 

 Until some or all of these questions are answered in the affirma- 

 tive, erythrogaster is entitled to rank as a distinct species of 

 Natrix. But there is still much to learn as to its range and its 

 breeding habits. 



Olivet College, Michigan, 

 August, 1902. 



