(syn. Regulus Ϯ Goldcrest R. regulus) Gr. βασιλισκος basiliskos  princeling  < dim. βασιλευς basileus  king. This is probably only a substantive name (see Regaliolus). 

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 24 May 2019).