3. _Verruca Spengleri_, Darwin. ('Balanidæ,' p. 521, Tab. 21, fig. 2.)
Scuto mobili, cum adductoris musculi cristâ acutâ, rectâ, mediali;
scuto immobili non majore quam immobile tergum.
_Hab._--In Insulâ Madeirâ.
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