Stejneger, classification, [14];

families of Oscines, list, [495];

on Stercorariinae, [300]

Stelgidopteryx, [522]-[524]

Stephanophorus, [575]

Stercorariidae, [300]

Stercorariinae, [300] f., [304];

habits, [302] f.

Stercorarius crepidatus, [301], [305];

S. parasiticus, [301], [305];