. ▁Only ▁the ▁bas al ▁third ▁of ▁the ▁interior ▁surface ▁of ▁the ▁pitch er ▁is ▁g land ular . ▁The ▁per ist ome ▁is ▁cyl ind rical ▁and ▁up ▁to ▁ 0 . 8   mm ▁wide , ▁bearing ▁rib s ▁up ▁to ▁ 0 . 1   mm ▁high ▁and ▁spac ed ▁ 0 . 1   mm ▁apart . ▁Te eth ▁are ▁not ▁visible ▁on ▁the ▁inner ▁margin ▁of ▁the ▁per ist ome . ▁The ▁pitch er ▁lid ▁or ▁oper cul um ▁may ▁be ▁elli ptic , ▁ov ate , ▁or ▁orb icular , ▁and ▁generally ▁has ▁a ▁cord ate ▁base . ▁The ▁lid ▁la cks ▁append ages ▁and ▁measures ▁up ▁to ▁ 2   cm ▁in ▁length ▁by ▁ 1 . 8   cm ▁in ▁width , ▁being ▁slightly ▁wider ▁than ▁the ▁pitch er ▁mouth . ▁The ▁ne ct ar ▁g lands ▁of ▁the ▁lower ▁lid ▁surface ▁number ▁more ▁than ▁ 1 0 0 . ▁A ▁branch ed ▁or ▁divided ▁sp ur ▁( ≤ 3   mm ▁long ) ▁is ▁inserted ▁near ▁the ▁base ▁of ▁the ▁lid . ▁ ▁Upper ▁pitch ers ▁are ▁produced ▁from ▁an ▁early ▁age . ▁They ▁may ▁be ▁inf und ib ular ▁throughout ▁or ▁narrow ly ▁inf und ib ular ▁in ▁their ▁bas al ▁part , ▁becoming ▁nar ro wer ▁and ▁roughly ▁cyl ind rical ▁above . ▁They ▁are ▁broad est ▁in ▁the ▁middle ▁or ▁in ▁the ▁upper ▁portion . ▁Aer ial ▁pitch ers ▁are ▁larger ▁than ▁their ▁terrest rial ▁counter parts , ▁growing ▁to ▁