VARIATIONS OF GARTER-SNAKES. 



89 



The only other form wliich lias been confused with hutleri is the 

 Eutaenia hxichystoma of Cope. BracJiystoma was described as dis- 

 tinct on the basis of the small number of ventrals and superior and 

 inferior labial ]:)lates in the type, and although the reduction in speci- 

 mens fi'om Pennsylvania is considerable, I have already given my 

 opinion (Stone, 1906, 165) that they represent dwarfed specimens of 

 hutleri. I have also shown (1904) that the specimens referred to 

 hracliystoma by Clark (1903, 83-87) are ty]>ical hutleri. 



Habits and habitat relations. — It is not to be expected from the 

 history of this form that much would have been recorded on its habits, 



Fig. 29.— Habitat of Tiia.mn(iI'HIs bitleki. Ckkp;k at Lima Center, Wasjhtenaw Coi'nty, Michi- 

 gan. T. BVTI.EKI IS KUUND COMMONLY ON THE BANKS OF SUCH STREAMS IN SOUTHERN MICHIGAN. 



when so little has been as{;ertained of the habitat relations of forms 

 wliich have been well known for fifty years or more. In southern 

 IMichigan I have only taken it in the immediate vicinity of water, 

 either about the margin of swampy places or on the banks of streams 

 (fig. 29). Tliis may be a coincidence, but it is in accord with all of 

 the specimens collected throughout the range which have habitat 

 data. I have found them most frequently by overturning boards, 

 etc., in such places, although they are also found crawling about in 

 the long grass and herbage. 



