Atlanticella bicornis

Haecker

Diagnosis: Peristome coarsely areolate, with 4 perpendicular radial spines. One pair of spines directed toward bladder- (or bubble-) like central capsule, bifurcating at the base. The other pair very long, directed toward the sack-like central shell. Chambers in spines aligned in two rows. Central shell pyriform, thin-walled, smooth-surfaced.

Height of central shell: 0.36-0.42 mm.

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