What is the scientific name for the blue-tongued lizard?

Lacertilia Scientific names are specific to each individual species. You need to be specific as to what type of lizard you are referring to.

Common Anole found in US--(Anole carolenesis)

Komodo Dragon-(Varanus komdoensis)

Iguana-(Igauna igauna) --clever huh

Aligator--(Aligator mississippiensis)

These are just a few common one you may have been thinking of.