STELLIONIDAE Gray, 1825, Ann Philos. (2) 10:196(invalid as a jr. 
synonym of Stellionidae Bell, and also for the same reason that 
Bell's name is invalid). 
TUPINAMBIDAE Gray, 1825, Ann. Philos., (2) 10:199 (unavailable 
and non-existent nomenclaturally because the name of the type 
genus, Tupinambis Daudin, 1802, was not regarded as valid when 
the family-group name was established; hence the name 
Tupinambidae cannot replace the currently accepted name Teiidae 
Gray, 1827, as it would otherwise do). 
GENUS-GROUP NAMES 
Acrodvteis) Shake Za ngewe S430 slo Sits.4 a Re pits. 5: 30 (suppressed in 
priority but not in homonymy contexts, in favor of Phrynohyas 
Fitzinger, 1843:30, both having the same type species, Hyla 
venulosa Laurenti, 1768). 
Abaetauila, Gray, -18259.dAnnesPhilos.....(2).20 +208 (invalid. asi .a jr. 
homonym of Ahaetulla Link 1807, type species Ahaetulla 
mycterizans Link, 1807; a jr. synonym of the earlier Leptophis 
Bell, 1825, having the same type species, Coluber ahaetulla 
Linnaeus, 1758). 
Amblystoma Agassiz, 1846, Nomencl. Zool. 6(Rept.): PD (etal 
unjustified emendation and jr. synonym of Ambystoma Tschudi, 
its} sis})) o The date 1846, given in Opinion 649, is not correct. 
Vanzolini (1977:64) has shown that the probable year of 
publication of fascicle 6, containing reptiles and amphibians, 
was 1844, and certainly not later than 1845. 
Amplycephalus Kuhl and van Hasselt, 1822, Algemeene Konsten 
Letterbode, Haarlem 1: 101 (rejected in priority but not in 
homonymy contexts to protect Pareas Wagler, 1830, and Cemophora 
Cope, 1860, since the two species most logically assignable as 
type of Amplycephalus (no species were originally included in 
the genus) belong one to Par , one to Cemophora, as now 
interpreted; since application of the rules of the Code was not 
suspended, Coluber coccineus Blumenbach, 1788, has to be 
accepted as the type species of Amplycephalus, which is thus 
now a jr. synonym of Cemophora, of which Blumenbach's name is 
the type species). 
Anagides 'Baird, 1851, Week's LIeon. Encyclop. Sci. 2:256 (an 
erroneous original spelling of Aneides Baird, 1851:257, hence 
non-existent nomenclaturally; also a jr. homonym of Anaides 
Westwood, 1842, for a beetle). As pointed out by Smith and 
Smith (1973:11) Heck's vol. 2 was not published in 1849 as 
