Kenneth Krysko photo.

Scientific name: Storeria dekayi .

The following key will separate the three subspecies of brown snake that are found in Florida. If the characteristics in the key below are insufficient to distinguish between the subspecies, you probably can do so using geographic location alone.

1a	Light band across head, 15 scale rows; peninsular Florida to southeastern Georgia.	Florida brown snake, Storeria dekayi victa
1b	No light band across head, 17 scale rows.	2
2a	Horizontal dark line on side of head behind eye; no dark lines cross back; extreme western Florida panhandle, through Louisiana to Texas.	Marsh brown snake, Storeria dekayi limnetes
2b	No dark line behind eye, numerous dark lines cross back; northern peninsular Florida and eastern Florida panhandle north to Indiana and Illinois.	Midland brown snake, Storeria dekayi wrightorum

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Checklist of Florida Amphibians and Reptiles — Florida Herpetology