yn cha ▁( former ly ▁in ▁Hy ps ig l ena ▁tor qu ata ▁) ▁Cat - ey ed ▁sn akes ▁Northern ▁cat - ey ed ▁s nake ▁Le pt ode ira ▁sept entr ional is ▁( w / o ▁former ▁L . ▁s . ▁pol yst ict a ▁elev ated ▁now ▁to ▁species ) ▁Sub family : ▁X en od ont inae ▁W orm ▁sn akes ▁Common ▁w orm s nake ▁Car ph oph is ▁am o en us ▁ ▁Western ▁w orm s nake ▁Car ph oph is ▁verm is ▁ ▁Black - strip ed ▁s nake ▁Reg al ▁black - strip ed ▁s nake ▁Con i oph anes ▁imperial is ▁ ▁Ring ne ck ▁s nake ▁Ring - ne ck ed ▁s nake ▁Di ad oph is ▁pun ct atus ▁ ▁M ud ▁s nake ▁and ▁rain bow ▁s nake ▁Red - bel lied ▁mud s nake ▁Far ancia ▁ab ac ura ▁ ▁Rain bow ▁s nake ▁Far ancia ▁er yt ro gram ma ▁ ▁Hog - n osed ▁sn akes ▁Pla ins ▁h og - n osed ▁s nake ▁H eter odon ▁nas icus ▁ ▁D ust y ▁h og - n osed ▁s nake ▁H eter odon ▁g loy di ▁( former ly ▁in ▁H eter odon ▁nas icus ) ▁Mexican ▁h og - n osed ▁s nake ▁H eter odon ▁k en ner ly i ▁( former ly ▁in ▁H eter odon ▁nas icus ) ▁Eastern ▁h og - n osed ▁s nake ▁H eter odon ▁plat