10 
Rhinaspis Fitzinger, 1843, Syst. Rept.:25 (ruled a nomen nudum, as 
its type species, R. proboscideum Fitzinger, 1843, is a nomen 
nudum; neither name exists nomenclaturally but both are 
commonly cited in the synonymy of Simophis Peters, 1860, and 
its type species, Heterodon rhinostoma Schlegel, 1837; their 
synonymy includes Jan's 1863 occupation of Fitzinger's nomina 
nuda, as Rhinaspis proboscideus). 
Rhinosimus Duméril, Bibron and Duméril, 1854, Erp. Gén. 7:991 (a 
jr. homonym of Rhinosimus Latreille, 1802, a genus of beetles; 
type species Rhinosimus guerini Duméril, Bibron and Duméril, 
1854, now placed in Phimophis Cope, 1860, as its type species). 
Rhinostoma Fitzinger, 1826, Neue Classif. Rept.:56,29 (rejected in 
priority but not homonymy contexts to protect Lystrophis Cope, 
1885, type species Heterodon dorbignyi Duméril, Bibron and 
Duméril, of which Vipera nasua Wagler, 1830, is a jr. synonym 
through’ “reject ton Sine iprverityssput / not “homonymy © contexts; 
Rhinostoma was diagnosed but without an acceptable species, 
although two nomina nuda were named; subsequently Vipera nasua 
was designated type species) . 
Rhynchocephalus Owen, 1845, Trans. Geol. Soc. London (2)7:78 (a 
jr. synonym of Sphenodon Gray, 1831, having the same type 
species, Hatteria punctata Gray, 1842; also a jr. homonym of 
Rhynchocephalus Fischer von Waldheim, 1806, for a dipterous 
insect). 
scine: Oken, 1816, Lehrb. Naturg. 3:300 (this work by. Oken has 
been suppressed for nomenclatural purposes (Opinion 417), hence 
the name does not exist nomenclaturally and should not be cited 
in the synonymy of anything). 
Scincorum Oken, 1816, Lehrb. Naturg. 3:index (as in the preceding 
accounts for (Scine?)). 
Siredon Wagler, 1830, Syst. Amph.:209,210 (rejected in priority 
but not in homonymy contexts to protect Ambystoma Tschudi, 
1838; type species §. axolotl] Wagler, 1830, a jr. synonym of 
Gyrinus mexicanus Shaw, 1898, now in Ambystoma). 
Sirena Fischer von Waldheim, 1808, Zoognosia, Ed. 2:tab. iii (an 
unjustified emendation of Siren Linnaeus, 1766; an available 
but invalid jr. synonym of the latter name) . 
Sirene Oken, 1816, Lehrb. Naturg. 3:187 (this work by Oken has 
been rejected for nomenclatural purposes (Opinion 417), hence 
the name does not exist nomenclaturally and should not be cited 
as a synonym of anything; the name is also an unjustified 
emendation of Siren Linnaeus, 1766, as well as a jr. homonym of 
