Fig.30. Der amerikanische Krusten-Veran (Heloderma horridum) = Mexican beaded lizard (Heloderma horridum)
Fig.31. Der marmorierte Wasser-Veran (Hydrosaurus marmoratus) = marbled water monitor (Varanus marmoratus)

Bilder-Atlas zur wissenschaftlich-populären Naturgeschichte der Wirbelthiere / von Leopold Joseph Fitzinger.
Source https://www.biodiversitylibrary.org/pageimage/4024157
Author Fitzinger, Leopold Joseph
Source: https://commons.wikimedia.org/wiki/File%3ABilder-Atlas_zur_wissenschaftlich-popul%FF%FFren_Naturgeschichte_der_Wirbelthiere_%28Plate_%2816%29%29_BHL4024157.jpg


Fig.30. Der amerikanische Krusten-Veran (Heloderma horridum) = Mexican beaded lizard (Heloderma horridum)

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 the other 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 bands. As it is a specialized predator that feeds primarily upon eggs, the primary use of its venom is still a source of debate among scientists. This venom has been found to contain several enzymes useful for manufacturing drugs in the treatment of diabetes, and research on the pharmacological use of its venom is ongoing.


Fig.31. Der marmorierte Wasser-Veran (Hydrosaurus marmoratus) = marbled water monitor (Varanus marmoratus)

The marbled water monitor (Varanus marmoratus), also known commonly as the Philippine water monitor, is a large species of monitor lizard in the family Varanidae. The species is endemic to the Philippines. The monitor lizard from Palawan, Mindoro, southern Luzon and the Sulu Archipelago was recently described as a new species, Varanus palawanensis.