photo by user Meggar https://en.wikipedia.org/wiki/User:Meggar
Source: https://en.wikipedia.org/wiki/File:Northern_alligator_lizard.jpg

The northern alligator lizard (Elgaria coerulea) is a medium-sized lizard that occurs on the North American west coast. The northern alligator lizard was formerly known by the scientific name of Gerrhonotus coeruleus Wiegmann, 1828, but is nowadays assigned to the genus Elgaria. Four subspecies are recognized as being valid, including the nominotypical subspecies:
E. c. coerulea (Wiegmann, 1828) – San Francisco alligator lizard
E. c. palmeri (Stejneger, 1893) – Sierra alligator lizard
E. c. principis Baird & Girard, 1852 – Northwestern alligator lizard
E. c. shastensis (Fitch, 1934) – Shasta alligator lizard
Order: Squamata, Suborder: Sauria, Infraorder: Anguimorpha, Family: Anguidae, Subfamily: Gerrhonotinae, Genus: Elgaria, Species: Elgaria coerulea (Wiegmann, 1828)
Synonyms:
Gerrhonotus coeruleus Wiegmann, 1828
Gerrhonotus cæruleus [sic] — Boulenger, 1885
Elgaria coerulea — Crother, 2000