(syn. Horizocerus Ϯ Eastern Long-tailed Hornbill H. cassini) Gr. τροπις tropis  ship’s keel; κρανος kranos  helmet; "Genus ORTHOLOPHUS.  It has been pointed out to me by Mr. Tom Iredale that this genus, introduced by Mr. Ogilvie-Grant (Cat. Birds Brit. Mus. xvii. p. 424, 1892) for two West African Hornbills, is preoccupied by Ortholophus Bigot, Bull. Soc. Ent. Fr. (6) ii. p. 129 (1882), for a genus of Diptera. I propose to substitute Tropicranus, gen. nov., for Mr Ogilvie-Grant's Ortholophus with type Ortholophus cassini Finsch   ...  The name derives from τροπις, a keel, and κρανος, a helmet." (W. Sclater 1922).

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 on 23 January 2019).