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,
Broadley's flat lizard to accurately distinguish between conspecifics of various fitness. They have as many as three times the number of UV photoreceptor cells in their retina compared to other lizards. Sexual maturity is reached at around snout-vent length for both sexes. Females lay two clutches of eggs in early summer. Broadley's flat lizard The Augrabies flat lizard ("Platysaurus broadleyi") is a species of lizard in the Cordylidae family endemic to South Africa. "Platysaurus broadleyi" is also called Broadley's flat lizard. Both the specific name, "broadleyi", and one of the common names, Broadley's flat lizard, are in honor of herpetologist . The Augrabies