▁Du ode c ima , ▁Reform ata . ▁Stockholm : ▁L . ▁Sal vi us . ▁ 5 3 2 ▁pp . ▁( C rot alus ▁mil i arius , ▁new ▁species , ▁p . ▁ 3 7 2 ). ▁( in ▁Latin ). ▁Pow ell ▁R , ▁Con ant ▁R , ▁Collins ▁J T ▁( 2 0 1 6 ). ▁Pet erson ▁Field ▁Guide ▁to ▁Re pt iles ▁and ▁Am ph ib ians ▁of ▁Eastern ▁and ▁Central ▁North ▁America , ▁Four th ▁Edition . ▁Boston ▁and ▁New ▁York : ▁H ought on ▁M if fl in ▁Har court , ▁x iv ▁+ ▁ 4 9 4 ▁pp ., ▁ 4 7 ▁pl ates , ▁ 2 0 7 ▁figures . ▁. ▁( S istr urus ▁mil i arius , ▁pp . ▁ 4 4 3 - 4 4 4 ▁+ ▁Pl ate ▁ 4 6 ). ▁Schmidt ▁K P , ▁Davis ▁D D ▁( 1 9 4 1 ). ▁Field ▁Book ▁of ▁Sn akes ▁of ▁the ▁United ▁States ▁and ▁Canada . ▁New ▁York : ▁G . P . ▁Put nam ' s ▁S ons . ▁ 3 6 5 ▁pp ., ▁ 3 4 ▁pl ates , ▁ 1 0 3 ▁figures . ▁( S istr urus ▁mil i arius , ▁pp . ▁ 2 8 9 - 2 9 0 ▁+ ▁Pl ate ▁ 3 1 ). ▁Smith ▁H M , ▁Bro die ▁ED ▁Jr ▁( 1 9 8 2 ). ▁Re pt iles ▁of ▁North ▁America : ▁A ▁Guide ▁to