▁non - ele ph antine ▁h ind ▁lim bs ▁and ▁a ▁wide - color ed ▁sub orb ital ▁patch . ▁They ▁have ▁smooth ▁shell s , ▁rounded ▁posterior ly ▁and ▁straight ▁interior ly . ▁These ▁shell s ▁are ▁longer ▁than ▁they ▁are ▁wide , ▁have ▁a ▁low ▁later ▁profile ▁and ▁can ▁reach ▁up ▁to ▁ 3 7   cm ▁( 1 4 . 5 ▁inches ) ▁in ▁length . ▁On ▁the ▁vent ral ▁side ▁of ▁the ▁shell ▁is ▁yellow ▁with ▁symmet rical ▁black ▁mark ings . ▁D ors ally ▁the ▁shell ▁is ▁dark ▁in ▁color ▁with ▁the ▁verte br al , ▁cost al ▁and ▁marg inal ▁sc utes ▁having ▁dark ▁black ▁sp ots ▁surrounded ▁by ▁l ighter ▁marg ins . ▁The ▁B aja ▁California ▁slider ▁has ▁a ▁large , ▁tri angular ▁sh aped ▁head ▁which ▁is ▁covered ▁by ▁smooth ▁skin . ▁They ▁have ▁pro tr ud ing ▁non - ho oked ▁sn outs ▁where ▁the ▁nost r ils ▁are ▁located ▁dec ently ▁high ▁and ▁large ▁eyes . ▁  The ▁top ▁of ▁the ▁head ▁is ▁o live ▁colored ▁with ▁ind ist inct ▁pale ▁lines ▁while ▁the ▁ch in ▁and ▁thro at ▁are ▁l ighter ▁with ▁central ▁yellow ▁mark ings ; ▁there ▁is ▁a ▁pair ▁of ▁yellow ▁stri pes ▁that ▁extend ▁anterior ly ▁across ▁the ▁local ▁j aw ▁and ▁onto ▁the ▁upper ▁j aw . ▁Their ▁t ails ▁are ▁moder ately ▁long ▁while ▁male ' s ▁t ails ▁being ▁longer ▁than ▁females . ▁The ▁bodies ▁are ▁covered ▁with ▁multiple ▁yellow ▁stri pes ▁including ▁the ▁for