(Thraupidae; Ϯ Oleaginous Hemispingus S. frontalis ignobilis) Gr. σφην sphēn, σφηνος sphēnos  wedge; οψις opsis  appearance; "Sphenopsis, genus novum ex familia Dendrocolaptidarum, affine Philydori et ejusmodi formis plerumque Anabatis dictis.  ... Typ. et sp. unica S. ignobilis, sp. nov.  ... It is remarkable for the short, straight, conical bill, in which it differs from all the allied species that I am acquainted with" (P. Sclater 1861); Sclater believed his single imperfect specimen to be a furnarid allied to Philydor.  Var. Sphenops (Gr. ωψ ōps countenance).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 21 January 2019).