  We consider abelian length categories, a generalization of module categories
over Artin algebras. Let $\mathcal{A}$ be an abelian length category of colocal
type. We show that the lattice $\mathsf{S}(\mathcal{A})$ of full additive
subobject closed subcategories of $\mathcal{A}$ is distributive. Furthermore,
we give a characterization of abelian length categories of colocal type.
  If $A$ is an algebra of colocal type over an algebraically closed field, then
this characterization is especially simple and we can describe the lattice
$\mathsf{S(mod} ~A)$ up to isomorphism.
