258 AMPHIBIANS AND REPTILES. 



hodon cinereus, Storeria dekayi, S. occipitomaculata, Thamnophis sirtalis, 

 Liopeltis vernalis, Chrysemys cinerea, Chelydra serpentina. 



2. Those forms that are not known to extend far north of latitude 

 44° north, but are nevertheless known to occur near this latitude and 

 might reasonably be expected here. The Huron County records of 

 these species, which are listed below, are of value as adding to our 

 knowledge of their distribution within the state. They are Choro- 

 philus nigritus triseriatus, Thamnophis sauritus, LampropeUis doluitus 

 triangulus, Natrix sipedon, Sistrurus catenatus and Emydoidea bland- 

 ingi. Further investigation will undoubtedly result in the placing of 

 some of these forms in the first group. 



3. Those forms of southern distribution that were not definitely 

 known to occur in the lower peninsula as far north as this latitude. 

 Here belong Eumeces quinquelineatuus, Elaphe vulpinus, Heterodon 

 platyrhinus and Thamnophis hutleri. This group is a very interesting 

 one from the standpoint of Michigan herpetology, as it gives us more 

 exact data on the northern limit of these species, and may indicate a 

 more southern element in the fauna of this coast than in that of the 

 interior. 



Eumeces quinquelineatus. "The Eumeces quinquelineatus is distrib- 

 uted throughout the eastern district, with the exception of the Cana- 

 dian and Hudsonian subdistricts, and throughout the Austroriparian, 

 excepting the Texan district. The most northern locality from which 

 I have seen a specimen is Michigan, as pointed out by Hallo well." (Cope, 

 1898 p. 638). The Michigan specimen referred to by Cope was taken 

 at Flint. ^Michigan, and hitherto has been the most northern record for 

 the state. 



Elaphe vulpinus. The fox snake does not extend as far south as do 

 most of the species that make up the Michigan fauna. The only 

 Michigan record known to the writer, previous to this expedition, was 

 Grosse Isle (Cope, 1898, p. 832) and "from the vicinity of Saginaw 

 Bay" (Miles 1861, p. 234). Other specimens were recorded from this 

 coast in 1909 (Ruthven 1909) so that, as it was found to be rather 

 abundant in the sand region and on Stony Island, it is now known to 

 extend up the east coast of Michigan as far north as this latitude. It 

 probably occurs in suitable habitats farther north in the lower penin- 

 sula, for it is known from the upper peninsula (Ruthven 1910). 



Heterodon platyrhinus. This species occurs throughout the eastern 

 forest region, from Florida northward. It w'as to have been expected 

 in the state, but up to 1909 its status was very doubtful. The reliable 

 records seem to show that it is primarily confined to the sandy regions 

 in southern Michigan, as far north as Oscoda Countv and Manistee 



