Eurycephalus is an invalid longhorn beetle generic name first published by the British zoologist John Edward Gray in 1831.Gray, J. E. 1831. Appendix. A synopsis of the species of the Class Reptilia. In: Griffith, E. (Ed.), The Animal Kingdom Arranged in Conformity with its Organization, by the Baron Cuvier, with Additional Descriptions of all the Species Hitherto Named, and of Many not before Noticed, by Edward Griffith. Volume 9. The Class Reptilia Arranged by the Baron Cuvier with Specific Descriptions by Edward Griffith, F.L.S., A.S., & c. and Edward Pigeon, Esq.. Whittaker, Treacher, and Co. [London], 1-110. It is now considered to be a junior objective synonym of the genus Tapeina established by the French entomologists Amédée Lepeletier and Jean Guillaume Audinet-Serville in 1828. Several other organisms were also named Eurycephalus by other zoologists that have since been invalidated. They are listed below with their current accepted name:
Eurycephalus Dejean, 1835 (junior homonym) = Euryphagus J. Thomson, 1864 - A cerambycid beetle genus belonging to the tribe Trachyderini Eurycephalus Imamura, 1996 (junior homonym) = Sunagocia Imamura, 2003 - A genus of flathead fish Eurycephalus Agassiz, 1846 (misspelling) = Eurocephalus A. Smith, 1836 - A genus of passerine birds in the shrike family
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