Mexican beaded lizard beaded lizard under the Convention on International Trade in Endangered Species as an Appendix I animal, making it illegal to export the species. Mexican beaded lizard The Mexican beaded lizard ("Heloderma horridum") is a species of lizard in the family Helodermatidae, one of the two species of venomous beaded lizards found principally in Mexico and southern Guatemala. It and its congener (member of the same genus) the Gila monster ("Heloderma suspectum") are the only lizards known to have evolved an overt venom delivery system. The Mexican beaded lizard is larger than the Gila monster, with duller coloration, black with yellowish
Cuban night lizard Cuban night lizard The Cuban night lizard ("Cricosaura typica") is a night lizard (family Xantusiidae, subfamily Cricosaurinae) endemic to southern Cuba. It is the only member of the genus "Cricosaura", one of three in the night lizard family. "Cricosaura" is derived from the Greek words "krikos" and "saura" meaning "ring lizard", perhaps in reference to the rings of caudal scales. The name ""typica"", from the Greek word "typikos", means "typical". The Cuban night lizard differs from the other night lizards in possessing two frontonasal scales, one frontal scale, no parietal scale, and a fourth finger with four phalanges. With a