Key to Scientific Names in Ornithology
(Thamnophilidae; Ϯ Stub-tailed Antbird S. berlepschi) Sipi, Chocó, western Colombia; "SIPIA Hellmayr, genus nov.b ... b Sipia HELLMAYR, genus nov. Nearest to Cercomacra, but tail very much shorter (two-thirds as long as, instead of being equal to, or even longer than, the wing) and much less graduated (the outer most rectrix falling short of the penultimate one by only four millimetres); rectrices decidedly narrower; tarsus much longer and stronger. Type: Pyriglena berlepschi HARTERT." (Hellmayr 1924).