Mexican beaded lizard generic name "Heloderma" means "studded skin", from the Ancient Greek words "hêlos" (ἧλος)—the head of a nail or stud—and "dérma" (δέρμα), meaning skin. Its specific name, "horrĭdum", is the Latin word meaning rough or rude. The four subspecies of beaded lizard, elevated to full species in 2013, are: Adult beaded lizards range from in length. They are substantially larger than the Gila monster, which only reaches lengths of . The snout-to-vent length of a beaded lizard averages . The average body mass of an adult beaded lizard is , about 45% heavier than the average mass of a gila monster,
Spineless forest lizard Spineless forest lizard The spineless forest lizard, crestless lizard or lionhead agama (Calotes liocephalus) is a species of lizard in the family Agamidae. It is endemic to Sri Lanka. "Calotes liocephalus" grows to in snout–vent length and in total length. Spineless forest lizard is one of four "Calotes" species endemic to Sri Lanka, which all share a common set of characteristics. These include a relatively short head, with swollen cheeks, backwards, or backwards and downwards pointing scales on the side of the body, a tail that is strongly swollen at the base in fully grown adult males. This lizard is